12TH EDITION 09 20 00/NGC

National Gypsum
Construction Guide

®
HOW TO USE THE NATIONAL GYPSUM COMPANY
GYPSUM CONSTRUCTION GUIDE
NATIONAL GYPSUM PRODUCTS FOR ALL YOUR TRADEMARKS
BUILDING NEEDS
Your National Gypsum Company “Gypsum Construction The following names are trademarks owned by National
Guide” has been carefully developed to provide you with a Gypsum Company or its subsidiary, National Gypsum
comprehensive guide to the entire range of National Gypsum Properties, LLC:
products. We have attempted to give you the most accurate, DURABASE® KAL-KOTE®
up-to-date information in a clear, concise, easy-to-read DURASAN® KAL-MESH®
format. Because it is important for us to ensure our guide is
user-friendly, we welcome your comments. Please write EASY FINISH® MULTI-FLEX®
us at: National Gypsum Company Technical Services EDGE GRIP TM NGC®
Department, 2001 Rexford Road, Charlotte, N.C. 28211 or EXCELLENCE ACROSS 1-800 NATIONAL®
call 1-800-NATIONAL (1-800-628-4662) U.S.A. or Canada. THE BOARD® PERFECT SPRAY®
For your easy reference and accessibility to this information, we e2XP™ PERMABASE®
have placed all of our Sweet’s material in this section. For a E-Z S TRIP® PERMABASE FLEX®
complete copy of our literature call 1-800-NATIONAL. FIRE-SHIELD® PROFORM®
FIRE-SHIELD C TM SEASPRAY MVR®
CAD DRAWINGS AND SPECIFICATIONS GOLD BOND® SHAFTLINER®
To assist you in your design process, all CAD drawings and GOLD BOND 54® SHAFTLINER XP®
specifications are available at www.nationalgypsum.com. GRIDMARX® SOUNDBREAK™
Computer aided design (CAD) drawings are in DXF, DWG and GRIDSTONE®
GIF file formats. Specifications are in CSI three-part format and STA-SMOOTH®
CSI page format. Additional specification options are provided in GYPSOLITE® TRIPLE-T®
Masterspec and Manu-Spec. HIGH FLEX® ULTRATM
HI-ABUSE® UNI-KAL®
HI-IMPACT® X-KALIBUR®
KAL-KORE® XP®
KAL-KORNER BEAD®

SUB-SECTION HEADING
Each product in the section will be Suspended Metal Lath Ceilings
designated with a sub-section
DESCRIPTION
heading on the appropriate pages.
Metal lath suspensions are should be installed around
commonly made below the periphery.
virtually all types of Metal Lath is frequently used
construction for fire-rated for furred as well as
and non fire-rated plaster suspended ceilings.
ceilings. Framing of 1 1/2"
C.R. channels are spaced Metal lath is used for furring
up to 4' o.c. perpendicular from wood, concrete and
to joists and are cross- steel joists.
furred with 3/4" C.R. RECOMMENDATIONS GRAPHICS, ILLUSTRATIONS AND
channels spaced according
to specifications for types
1. Control joints should be
installed in ceilings without
PHOTOGRAPHY
and weight of metal lath. perimeter relief with a max-
Lath is then properly imum distance between Each product grouping is
lapped at sides and ends such joints of 30' with a
and tied every 6" to the
3/4" channel.
maximum undivided area full of informative graphics and
of 900 sq. ft. With perime-
Where it is advisable to install
unrestrained ceilings,
ter relief, maximum dis- photography as a visual aid in
tance is 50' with maximum
having perimeters
separated from adjacent
undivided area of 2500
sq.ft.
identifying products, uses and
COLOR ARROW HEAD walls or partitions, 2. Use three-coat plastering on installation.
galvanized casing beads metal lath.
Indicates next topic
for a product, i.e. TECHNICAL DATA
Description,
SIZE AND SPACING OF CHANNEL FOR SUSPENDED CEILINGS SIZE AND SPACING OF CHANNEL FOR FURRED
Technical Data, Center to Main Channel
AND SUSPENDED CEILINGS
Center Spacing Size of (weight Maximum 3/4" (19.0 mm) C.R. Channel Maximum
Details, of Hangers Cold Rolled per 1000 ft.) Center to Center Center to Center Cross Furring 300 lbs. Furring
Along Channel Channel (305 M) Spacing of Channel Spacing of Hangers (136 kg)/1000 ft. (305 M) Spacing
Specifications, up to 3' 1 1/2" 475 lbs. 4' up to 3' (914 mm) 3/8" (9.5 mm) rib lath 24" (610 mm)
(914 mm) (38.1 mm) (216 kg) (1219 mm) up to 3' (914 mm) 3.4 lb. (1.5 kg) flat rib lath 19" (483 mm)
Recommendations, up to 3'6" (1067 mm) 3.4 lb. (1.5 kg) mesh lath 16" (406 mm)
up to 3'6" 1 1/2" 475 lbs. 3'6" up to 4' (1219 mm) 2.5 lb. (1.1 kg) mesh lath 12" (305 mm)
Installation. (1067 mm) (38.1 mm) (216 kg) (1067 mm)
up to 4' 1 1/2" 475 lbs. 3'
(1219 mm) (38.1 mm) (216 kg) (914 mm) MAXIMUM SPACING OF SUPPORTS FOR METAL LATH
Support Weight of Lath
Type of Lath Spacing lbs. per sq. yd. (kg/m2)
Diamond Mesh
(flat expanded) 16" (406 mm) 3.4 (1.9)
Flat Rib 16" (406 mm) 2.75 (1.5)
19" (483 mm) 3.4 (1.9)
DETAILS 3/8" (9.5 mm) Rib 24" (610 mm) 3.4 (1.9)

HANGER WIRE
3/4" C.R.
CHANNEL
1 1/2" C.R.
HANGER WIRE CAD DRAWINGS
CHANNEL

These drawings are included where

1 1/2" C.R. 1 1/2" C.R.
3/4" C.R.
CHANNEL appropriate to assist architects and
CHANNEL
TIE WIRE CHANNEL
specifiers with detailed drawings.
GYPSUM PLASTER

GYPSUM
66 CASING BEAD PLASTER
PAGE NUMBER FLEXIBLE DUST SEAL
METAL LATH NO. 15
FINISHED WALL LINE 66 CASING BEAD EXPANSION JOINT
METAL LATH
SUSPENDED METAL LATH AT WALL (UNRESTRAINED) LIGHTING TROFFER
09210K
SUSPENDED METAL LATH CONTROL JOINT
09210O 09210M
Scale: 3" = 1'-0"
Scale: 1 1/2" = 1'-0" Scale: 3" = 1'-0"

40 NATIONAL GYPSUM CONVENTIONAL PLASTER SYSTEMS

National Gypsum Company Headquarters

2001 Rexford Road SUB-SECTION NAME CAD DRAWING FILE
Charlotte, North Carolina 28211 Repeats the name of the NUMBER
(704) 365-7300 current sub-section.
Internet - www.nationalgypsum.com
COPYRIGHT 2008 NATIONAL GYPSUM COMPANY
 GENERAL REFERENCE

REFERENCE
GENERAL
National Gypsum Company is a fully integrated manufacturer
and supplier of building and construction products worldwide.

Our primary emphasis is on Gold Bond® BRAND gypsum

board, ProForm® BRAND joint treatment products, PermaBase®
BRAND cement board, and gypsum plaster systems.

Based in Charlotte, NC, the privately held National Gypsum

Company operates more than 40 facilities throughout the
U.S. and Canada.

Charlotte, North Carolina, is the home of the new National

Gypsum Company.

TABLE OF CONTENTS
Product Specification Directory .........................................................................3 0 9 2 9 0 0 Hi-Impact BRAND XP Gypsum Board.........................................81
® ®

Sound and Fire Rated Assemblies ......................................................................8 0 9 2 9 0 0 SoundBreak™ Gypsum Board ....................................................84
Quick Selector for Fire and Sound Rated Systems..............................................9 0 9 2 9 0 0 Gridstone BRAND Ceiling Panels...................................................86
Gypsum Plaster Partitions – Metal Lath.........................................................11 0 9 2 9 0 0 Gridstone BRAND Cleanroom Ceiling Panels ...............................87
Plaster Fireproofing Columns (10WF40 or heavier)......................................12 0 9 2 9 0 0 Gridstone® BRAND Hi-Strength Ceiling Panels .............................88
Plaster Fireproofing Beams (8WF24 or heavier) ...........................................12 0 9 2 9 0 0 Gold Bond® BRAND Foil Back Gypsum Board .............................89
Veneer Plaster Partitions – Wood and Steel Framing....................................12 0 9 2 9 0 0 Gypsum Systems Nonload-Bearing Steel Frame Partitions .........90
Gypsum Board Partitions – Wood Framing (Load-Bearing) ..........................12 0 9 2 9 0 0 Drywall Metal Framing ...............................................................93
Gypsum Board Partitions – Steel Framing.....................................................14 0 9 2 9 0 0 Accessories .................................................................................94
Gypsum Board Partitions – Steel Framing (Load-Bearing) ............................18 0 9 2 9 0 0 Steel Frame Ceilings/Furring Channels or Studs...........................99
Gypsum Board Partitions – Durasan Prefinished Gypsum Board..................18 0 9 2 9 0 0 Wood Frame Walls and Ceilings ..............................................101
Gypsum Board Partitions – Solid..................................................................19 0 9 2 9 0 0 Resilient Furring Channel Construction ....................................106
Gypsum Board Partitions – Shaftwalls, Area Sep. Walls...............................20 0 9 2 9 0 0 Gypsum Board Over Masonry .................................................108
Gypsum Board Column Fireproofing............................................................21 0 9 2 9 0 0 Solid Laminated Partitions.........................................................110
Gypsum Board Beam Fireproofing ...............................................................22 0 9 2 9 0 0 ProForm® BRAND Joint Treatment ...............................................112
Gypsum Board Floor/Ceilings – Wood Framing...........................................22 0 9 2 9 0 0 ProForm® BRAND Texture Products .............................................115
Gypsum Board Roof/Ceilings – Wood Framing ...........................................23 0 9 2 9 0 0 Levels of Gypsum Board Finish .................................................118
Gypsum Board Floor/Ceilings – Steel Framing .............................................24 09 21 16.23 Cavity Shaftwall Systems...........................................................123
Gypsum Board Roof/Ceilings – Steel Framing..............................................26 09 21 16.23 Horizontal Shaftwall Duct and Ceiling Assemblies...................137
Gypsum Board Horizontal Shaftwall Duct Protection..................................26 09 21 16.33 H-Stud Area Separation Wall System ........................................139
0 6 1 6 4 3 Gold Bond® BRAND Gypsum Sheathing and e2XP Extended Exposure Sheathing ....27 0 9 2 8 0 0 PermaBase® BRAND Cement Board.............................................145
0 9 2 3 0 0 Conventional Plaster Systems...........................................................................33 INDEX Index .........................................................................................157
0 9 2 6 1 3 Veneer Plaster Systems ....................................................................................43 INDEX Index of CAD Detail Drawings..................................................161
0 9 2 9 0 0 Gypsum Board Systems ...................................................................................57

0 9 2 9 0 0 Gold Bond® BRAND GridMarX® Gypsum Board ................................................64

0 9 2 9 0 0 Gold Bond® BRAND Gypsum Board ..................................................................65

Our vision: To be recognized as the industry leader for extraordinary
0 9 2 9 0 0 Gold Bond® BRAND Fire-Shield® Gypsum Board ..............................................66 service and products that consistently meet our customers’ toughest
standards.
0 9 2 9 0 0 Gold Bond® BRAND Sta-Smooth Gypsum Board ...............................................67
Driving and sustaining our Vision are these core Values:
0 9 2 9 0 0 Gold Bond® BRAND XP® Gypsum Board ...........................................................70
• Customer satisfaction as our priority
0 9 2 9 0 0 Gold Bond® BRAND Exterior Soffit Board ...........................................................71
• Honesty, integrity, fairness and respect
0 9 2 9 0 0 Gold Bond® BRAND 1" Fire-Shield® Shaftliner....................................................73 • Communications and openness with all those with whom we deal
0 9 2 9 0 0 Gold Bond® BRAND 1" Fire-Shield® Shaftliner XP® .............................................74 • Teamwork, empowerment and continuous improvement
• Work hard, be safe, and have fun
0 9 2 9 0 0 High Flex BRAND Gypsum Board ......................................................................75
0 9 2 9 0 0 Gold Bond® BRAND High Strength Ceiling Board ..............................................77
0 9 2 9 0 0 Gold Bond® BRAND Hi-Abuse® XP® Gypsum Board ..........................................78

NATIONAL GYPSUM GENERAL REFERENCE 1

NATIONAL GYPSUM COMPANY
such systems, prod-
ucts are evaluated
together as com-
plete building
assemblies – walls,
partitions, floors
and ceilings.
Before National
Gypsum releases a
system to the build-
ing industry, the sys-
tem is thoroughly
tested and the
results are correlated
and charted, making
it easier for the
builder or architect
to match a system to
his needs or to National Gypsum’s own
building codes. This patented Calcidyne system
extensive database heats the land plaster to
of technical infor- remove 75% of the water
mation is made which is chemically combined
National Gypsum’s Technology Innovation Center is located in in the gypsum molecules.
available to you not
Charlotte, North Carolina. National Gypsum has always held a leader- only through techni-
ship role in the development of gypsum based products and systems. Performance tests are
cal bulletins such as conducted according to
Many of today’s most innovative gypsum, joint treatment and cement this one, but also
board products and systems were developed, tested and introduced by accepted national stan-
through our techni- dards under controlled lab-
National Gypsum Company. cal support network. oratory conditions to mini-
YOUR TECHNICAL Gypsum products you need The construction systems mize variances and to per-
RESOURCE and specify are right for referred to in this manual mit comparison of test
the job. They are backed are designed and tested results of all types of sys-
Today, more than ever, clear, with material manufactured tems, similar and dissimilar.
accurate information is vital up by thoroughly trained
Customer Service by National Gypsum. Detailed recommendations
to every construction job. Substitutions of other
The challenges of construc- Representatives who can are contained in each sec-
also help with product products or brands for tion. Architects, structural
tion continue to grow: National Gypsum Products
increasingly innovative selection and purchase. engineers or others who
are not recommended. are responsible for field
building designs, tighter Continuing Research. Because
budgets, tighter schedules, the building industry and Field Installation of tested sys- installations must make
and the continuing devel- building codes are con- tems must be identical to their own determinations
opment of new materials stantly changing, National the laboratory installation concerning the applicabili-
and construction tech- Gypsum maintains a full- to produce optimum per- ty of the laboratory perfor-
niques. scale research center that formance of these systems, mance test results to the
continually tests and evalu- though duplication of con- design or construction of
A NETWORK OF trolled, laboratory results any specific structure.
TECHNICAL SUPPORT ates products, applications,
construction systems and in such field installations is
In keeping with the corporate techniques. not guaranteed.
mission to become the pre-
ferred supplier for our cus- Immediate Answers. Of
tomers, National Gypsum course, there are times
has made a total commit- when you need an answer
ment to technical assis- to a pressing situation or
tance and created a net- question. For this reason,
work of support to provide National Gypsum has set
valuable assistance at every up our Technical
stage of a project’s devel- Assistance Hotline:
opment. 1-800-NATIONAL
(1-800-628-4662).
Field Representation. Before
construction begins, while One toll-free phone call gives
plans and specifications are a direct, personal link to a
being produced, these technical expert with up-to-
experienced, trained pro- date knowledge of specifi-
fessionals provide cations, building codes,
technical consultation product information and
in selecting, specifying much more.
and using gypsum-based QUALITY IS SYSTEMATIC
building materials. At the National Gypsum
During the construction Research Center, we
phase, our Field concentrate not only on National testing organizations frequently participate in the
Representatives have the building products individu- many product tests conducted at NGC Testing Services. Fire,
experience and the training ally but also on complete acoustical, structural and analytical test laboratories are
to assure that the National construction systems. In available commercially through NGC Testing Services for SM

other manufacturers and research interests. For information,

call 716-873-9750 or www.NGCTestingServices.com.

2 NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE

PRODUCT SPECIFICATION DIRECTORY GENERAL REFERENCE

REFERENCE
GENERAL
FOREWORD

This directory is designed to provide a convenient, up-to-date For the key to Federal Specification, gypsum board and joint
reference to some of the products marketed by National treatment product designations (Type, Form, etc.), refer to
Gypsum Company, and to the ASTM and Federal table on page 7.
Specifications with which they comply. This is to certify that the following materials comply in all
The General Services Administration has cancelled many Federal respects with listed specifications.
procurement documents. These have been superseded by
ASTM Specifications. Federal Specifications are listed for
reference.

GYPSUM BOARD PRODUCTS Specification Standards

Product Description and Use ASTM Federal
Regular Gypsum Fire resistant. Will take decoration after proper C 1396 SS-L-30D Type III
Board or Sta-Smooth surface preparation of interior walls and ceilings.
XP Gypsum Board 1/2" (12.7 mm) gypsum board with a C 1396 SS-L-30D Type III
moisture resistant gypsum core and mold/mildew
resistant purple paper. Will take decoration after
proper surface preparation of interior walls and ceilings.
Fire-Shield Gypsum 1/2" (12.7 mm) and 5/8" (15.9 mm) gypsum C 1396 SS-L-30D Type III
Board (Includes “C”) board with specially processed core highly Type X Grade X
resistant to fire; type X core.
XP Fire-Shield Gypsum 1/2" (12.7 mm) and 5/8" (15.9 mm) gypsum C 1396 SS-L-30D Type III
Board (Includes “C”) board with a moisture resistant gypsum Type X Grade X
core highly resistant to fire and mold/mildew
resistant purple paper; type X core.
SoundBreak 5/8" (15.9 mm) acoustically enhanced gypsum C 1396 SS-L-30D Type III
Gypsum Board board used in construction of high rated STC
assemblies.
Foil Back Gypsum Standard gypsum board with aluminum foil C 1396 SS-L-30D Type III
Board on backside providing vapor retarder for interior Form C
walls and ceilings.
Fire-Shield Shaftliner 1" (25.4 mm) thick, 2' (610 mm) wide, for solid C 1396 SS-L-30D Type IV
(Includes XP) partitions, shaft walls and Area Separation Walls; Type X Grade X
type X core.
Regular or Fire-Shield Gypsum board with extra resistance to C 1396 None
Exterior Soffit Board moisture and sagging used for exterior soffit. Type X
Gypsum Durasan Prefinished Gypsum board with a vinyl surface, combines C 1396 SS-L-30D Type III
Board Regular Gypsum Board texture and pattern in colors. No decoration required. Class 3
Durasan Prefinished Gypsum board with a vinyl surface, combines C 1396 SS-L-30D Type III
Fire-Shield Gypsum Board texture and pattern in colors; type X core. Type X Grade X Class 3
High Flex Gypsum Board 1/4" (6.4 mm) flexible gypsum board designed for C 1396 SS-L-30D Type III
use in radius wall and ceiling construction.
High Strength 1/2" (12.7 mm) gypsum board with core formulated C 1396 SS-L-30D Type III
Ceiling Board to provide increased sag resistance.
Hi-Abuse XP Fire-Shield 5/8" (15.9 mm) gypsum board with heavy abrasion C 1396 SS-L-30D Type III
Gypsum Board resistant mold/mildew resistant purple paper and a Type X Grade X
special core to provide greater resistance to surface
indentation; type X core.
Hi-Impact XP Fire-Shield 5/8" (15.9 mm) gypsum board with heavy C 1396 SS-L-30D Type III
Gypsum Board abrasion resistant mold/mildew resistant purple Type X Grade X
paper and a special moisture resistant gypsum core
backed with reinforcing fiber glass mesh; type X core.
Gridstone Ceiling Panels 1/2" x 2' x 2' (12.7 mm x 610 mm x 610 mm) C 1396 None
1/2" x 2' x 4' (12.7 mm x 610 mm x 1219 mm) Type X, Class 1;
gird panels with Fire-Shield G type X core and E 1264, Type XX,
vinyl laminate. Patterns E, G

NATIONAL GYPSUM PRODUCT SPECIFICATION DIRECTORY 3

GYPSUM BOARD PRODUCTS (cont.) Description and Use ASTM Federal
Gridstone Hi-Strength 5/16" x 2' x 2' (7.9 mm x 610mm x 610 mm) C 1396 None
Ceiling Panels 5/16" x 2' x 4' (7.9 mm x 610 mm x 1219 mm) Class 1
grid panels with non-combustible gypsum core
and vinyl laminate.

Gypsum Gridstone CleanRoom 1/2" x 2' x 2' (12.7 mm x 610 mm x 610mm) C 1396 None
Board Ceiling Panels 1/2" x 2' x 4' (12.7 mm x 610 mm x 1219 mm) Type X, Class 1;
grid panels with Fire-Shield G type x core and vinyl E 1264, Type XX,
laminate. Completely sealed on face, back and edges. Patterns E, G

Durabase Gypsum Board 5/16" (7.9 mm), 3/8" (9.5 mm), 1/2" (12.7 mm), C 1396 None
and 5/8" (15.9 mm) gypsum board for printing
application or laminating base.

Regular Jumbo Gypsum 1/2" (12.7 mm) gypsum board to be used as C 1396 SS-L-30D Type II
Sheathing a sheathing for exterior wall construction.

Fire-Shield Jumbo 5/8" (15.9 mm) gypsum board to be used as C1396 SS-L-30D Type II
Gypsum Sheathing sheathing for fire rated exterior wall construction; Type X Grade X
Sheathing type X core.
e XP Extended
2
1/2” (12.7 mm) Regular with a coated fiberglass mat C1177 SS-L0-30D Type II
Exposure Sheathing used as a sheathing for exterior wall construction. and applicable sections of
C1396
e XP Extended
2
5/8” (15.9 mm) Type X with a coated fiberglass mat C1177 SS-L0-30D Type II
Exposure Sheathing used as a sheathing for fire-rated exterior wall and applicable sections of Grade X
construction C1396

LATH, DRYWALL JOINT TREATMENT, TEXTURES AND ACCESSORIES Specification Standards

Product Description and Use ASTM Federal

Kal-Kore Plaster Base 3/8" (9.5 mm), 1/2" (12.7 mm) gypsum base C 1396 SS-L-30D Type VI
for veneer plaster systems.
Kal-Kore Fire-Shield 1/2" (12.7 mm), 5/8" (15.9 mm) gypsum base for C 1396 SS-L-30D Type VI
Lath Plaster Base (includes “C”) veneer plaster systems; type X core. Type X Grade X
Regular or Fire-Shield Gypsum base with special core to provide C 1396 SS-L-30D TypeVI
Hi-Abuse Kal-Kore greater resistance to surface indentation. Type X Grade X
Plaster Base Designed for high abuse areas.

ProForm All Purpose A conventional full-weight ready mix joint compound C 475 SS-J-570B
Joint Compound used for all phases of drywall finishing.
ProForm XP A conventional full-weight ready mix joint compound C 475 SS-J-570B
Joint Compound formulated for additional mold resistance.
ProForm Multi-Use A ready mix compound that combines the best attributes C 475 SS-J-570B
Joint Compound of All Purpose and Lite for use in all phases of drywall
finishing
Joint ProForm Lite A full “Lite” weight ready mix for use in finishing gypsum C 475 SS-J-570B
Treatment Joint Compound board, gypsum board joints, spotting fasteners and finish-
ing accessories.
ProForm Ultra An all purpose joint compound that pulls and sands easier C 475 SS-J-570B
Joint Compound than conventional ready mix with up to 50% less shrinkage.

ProForm Taping Ready mixed joint compound used to enhance bond when C 475 SS-J-570B
Joint Compound embedding joint tape and applying cornerbeads and
accessories.

ProForm Topping Ready mixed topping compound designed as a finish C 475 SS-J-570B
Joint Compound coat over joint compound.

ProForm Texture Grade A nonaggregated, ready mixed material formulated for C 475 SS-J-570B
texturing interior walls and ceilings.

ProForm Triple-T Triple-T is an all-purpose powder product to be job mixed C 475 SS-J-570B
Compound with water. It is recommended for tape application, finishing
and texturing.

ProForm Sta-Smooth, A setting type powder compound used for joint finishing. C 475 SS-J-570B
Sta-Smooth Lite, and
Sta-Smooth HS Joint
Compounds

4 NATIONAL GYPSUM PRODUCT SPECIFICATION DIRECTORY

 GENERAL REFERENCE

LATH, DRYWALL JOINT TREATMENT, TEXTURES AND ACCESSORIES (cont.) Specification Standards

REFERENCE
GENERAL
Product Description and Use ASTM Federal
Textures ProForm Perfect Spray A white, aggregated spray texture for interior use on None None
Textures walls and ceilings.
ProForm Perfect Spray A white, nonaggregated spray texture for interior use on None None
EM Textures walls and ceilings.
Gypsum Board Cornerbead* Used to protect exterior corners. C 1047 None
Gypsum Board Casing Bead* Used to reinforce and trim around doors and windows. C 1047 None
Arch Cornerbead* Used straight for exterior corners or may be snipped and C 1047 None
bent to form arches.

ProForm Joint Tape A paper tape for concealment of gypsum board joints. C 475** SS-J-570B**
ProForm Fiberglass A self-adhering glass fiber mesh tape to be used only with C 475 None
Mesh Tape setting compounds.
Accessories
ProForm Multi-Flex Used to form inside or outside corners that are less or None None
Tape Bead greater than 90o.
E-Z Strip Expansion Joint* Vinyl extrusion used as an expansion or control joint for C 1047 None
drywall and veneer plaster walls and ceilings.
.093 Zinc Expansion Joint* All zinc part used as an expansion or control joint for C 1047 None
drywall and veneer plaster walls and ceilings.

*National Gypsum does not manufacture these products.

FIRE AND SMOKE STOP COMPOUND Specification Standards
Product Description and Use ASTM Federal
ProForm Sta-Smooth Setting type product formulated to provide protection in None None
FS 90 Compound fire stopping applications through gypsum and other fire
rated assemblies. Meets ASTM E 814 and ANSI/UL 1479.

PLASTER PRODUCTS AND ADDITIVES Specification Standards

Product Description and Use ASTM Federal
Gold Bond Two-Way For use with job-mixed aggregate. Machine spray or C 28 SS-P-00402B
Hardwall Gypsum Plaster trowel application. Type II
Basecoat Gold Bond Mill-mixed with perlite. Add only water on the job. C 28 SS-P-00402B
Plasters Gypsolite Plaster Type I
Kal-Kote Base Plaster Basecoat plaster for veneer system. Add only water on the C 587 SS-P-00402B
job. Type VI
Gold Bond Gypsum Used with lime for trowel finish or run-in-place ornamental C 28 SS-P-00402B
Gauging Plaster work. Type V
Gold Bond Gypsum Used with lime for run-in-place ornamental work or with C 59 SS-P-00402B
Moulding Plaster water only for precast ornaments. Type V
Finish Kal-Kote Smooth Finish Hard, thin, smooth finish over Kal-Kote base plaster or C 587 SS-P-00402B
Plasters Plaster conventional basecoat plasters. Type VI
Kal-Kote Texture Hard, thin, textured finish over Kal-Kote base plaster or C 587 SS-P-00402B
Finish Plaster conventional basecoat plasters. Type VI
Uni-Kal Veneer Plaster One coat finish over Kal-Kore. Can also be used as finish C 587 SS-P-00402B
over Kal-Kote base or conventional plaster. Type VI
X-KALibur Extended set time, one coat finish over Kal-Kore. Can C 587 SS-P-00402B
Veneer Plaster also be used as finish over Kal-Kote base or conventional Type VI
basecoat plasters.
Special Gold Bond Retarder A powder used to slow the set of gypsum plaster. None None
Additives
Gold Bond Accelerator A powder used to quicken the set of gypsum plaster. None None

**Paper tape meeting these specifications available on special order.

NATIONAL GYPSUM PRODUCT SPECIFICATION DIRECTORY 5

VENEER PLASTER ACCESSORIES Specification Standards
Product Description and Use ASTM Federal
Kal-Korner Bead* Used to protect exterior corners in veneer plaster systems. C 1047 None
Expanded Veneer Cornerbead* Used as an alternate to the Kal-Korner bead for exterior corners. C 1047 None
Veneer J Trim Casing Bead* Used as a finished edge at door and window jambs. C 1047 None
Accessories Veneer L Trim Casing Bead* Used as a finished edge at door and window jambs. C 1047 None
Kal-Mesh Tape A coated non-adhesive fiberglass tape which is stapled to C 475 None
Kal-Kore to reinforce all joints and interior angles.
*National Gypsum does not manufacture these products.
CEMENT BACKERBOARDS Specification Standards
Product Description and Use ASTM Federal
PermaBase* Lightweight cement board composed of portland cement, aggregates and glass fiber mesh C 1325 None
Cement Board reinforcement, 1/4" (6.3 mm) (counters/floors only), 1/2" (12.7 mm) and 5/8" (15.9 mm)
thickness, 32" (813 mm), 36" (914 mm), and 48" (1219 mm) widths, 48" (1219 mm),
60" (1524 mm), 72" (1829 mm) and 96" (2438 mm) lengths. For interior or exterior use.
May be used on exterior surfaces with imposed wind loads up to 40 PSF.

PermaBase Flex* Lightweight Polymer-modified cement board with glass fiber mesh reinforcement, 1/2" None None
Cement Board (12.7 mm) thick, 48" (1219 mm) width, 96" (2438 mm) length. For use anywhere an even
curved surface is required.

*Complies with ANSI A118.9

ASTM APPLICATION SPECIFICATIONS

Used in conjunction with ASTM Product Specifications
C 754 Standard Specification for Installation of Steel Framing Members to Receive Screw-Attached Gypsum Panel Products.
C 840 Standard Specification for Application and Finishing of Gypsum Board.
C 841 Standard Specification for Installation of Interior Lathing and Furring.
C 842 Standard Specification for Application of Interior Gypsum Plaster.
C 843 Standard Specification for Application of Gypsum Veneer Plaster.
C 844 Standard Specification for Application of Gypsum Base to Receive Gypsum Veneer Plaster.
C 919 Standard Practice for Use of Sealants in Acoustical Applications.
C 1280 Standard Specification for Application of Gypsum Sheathing Board.

ANSI APPLICATION SPECIFICATIONS

Used in conjunction with ANSI Product Specifications
A 108.11 Standard for Interior Installation of Cementious Backer Units.

Code Report References

• ICC ESR-1338 • ICC ES, Inc. Legacy Report 89-35.01
Gypsum Wall and Ceiling Assemblies and Gypsum Board Gold Bond I-Stud Cavity Shaftwall System
Interior and Exterior Applications • ICC ES, Inc. Legacy Report 92-19
• ICBO ES, Inc. ER-1352 Dietrich H-Stud Area Separation Wall
Gold Bond Gypsum Board - Wood Framing • ICC ES, Inc. Legacy Report 9525B
• ICBO ES, Inc. ER-1601 Gold Bond I-Stud Cavity Shaftwall System
Gold Bond Screw Steel Studs and Furring Channels • ICC ES, Inc. Legacy Report 496
• ICBO ES, Inc. ER-3579 Half-Inch Gold Bond High Strength Ceiling Board
One and Two Hour Fire-Rated Gold Bond Interior Partition Systems • ICC ES, Inc. Legacy Report NER-506
• ICBO ES, Inc. ER-5731 Dietrich Shaftwall and Stairwell Fire-Resistive Assemblies
PermaBase Cement Board • National Evaluation Service, Inc., Report No. NER-578
• ICBO ES, Inc. ER-5733 PermaBase Cement Board
Half-Inch Gold Bond High-Strength Ceiling Board • ICC ES, Inc. Legacy Report ESR-1774
• ICC ES, Inc. Legacy Report 90-26.01 Weyerhaeuser Truss Ceiling Assemblies
Gold Bond Fire Wall/Party Wall

6 NATIONAL GYPSUM PRODUCT SPECIFICATION DIRECTORY

 GENERAL REFERENCE
Key to Federal Specification Designations

REFERENCE
GENERAL
GYPSUM BOARD PRODUCTS
Types–Grades–Classes–Forms–Styles
Type Grade Class Form Style
TYPE I R-Regular core 1-Plain face a-Plain back 1-Square edge
Lath X-Fire-retardant core b-Perforated 5-Round edge
c-Foil back
TYPE II R-Regular core 2-Water-resistant surface a-Plain back 1-Square edge
Sheathing W-Water-resistant 2-V-tongue and groove edge
treated core
X-Fire-retardant core
TYPE III R-Regular core 1-Plain face a-Plain back 1-Square edge
Gypsum Board X-Fire-retardant core 3-Predecorated surface c-Foil back 3-Taper or recess edge
4-Featured joint edge
6-Taper, featured edge
TYPE IV R-Regular core 1-Plain face a-Plain back 1-Square edge
Backer board X-Fire-retardant core c-Foil back 2-V-tongue and groove edge
3-Taper or recess edge
TYPE V R-Regular core 4-Fungus-resistant surface a-Plain back 1-Square edge
Formboard
TYPE VI R-Regular core 1-Plain face a-Plain back 1-Square edge
Veneer X-Fire-retardant core c-Foil back 3-Taper or recess edge
Plaster Base 6-Taper, featured edge
TYPE VII R-Regular core 2-Water-resistant surfaces a-Plain back 1-Square edge
Water-resistant W-Water-resistant 3-Taper or recess edge
Backing Board treated core
X-Fire-retardant core
As an aid in the identification of gypsum board products, above are the classifications as set forth in Federal Specification SS-L-30D.

JOINT TREATMENT PRODUCTS

Types–Styles–Classes
Type Style Class
TYPE I 1-Drying powder A-Taping
Joint Compound B-Topping
C-All purpose
2-Hardening powder A-Taping
B-Topping
C-All purpose
3-Drying, premixed paste A-Taping
B-Topping
C-All purpose
TYPE II 1-Plain
Joint Tape
As an aid in the identification of joint treatment products, above are the classifications as set forth in Federal Specification SS-J-570B.

NATIONAL GYPSUM PRODUCT SPECIFICATION DIRECTORY 7

Sound and Fire Rated Assemblies
SOUND RATINGS related to STC ratings figuration. For that reason,
Drywall and plaster construc- achieved by ASTM Method National Gypsum
tion systems are laboratory E 90. Company cannot guarantee
tested to establish their FIRE RESISTANCE the performance of specific
sound insulation character- construction assemblies
The term “fire-resistance” erected in the field. When
istics. Airborne sound insu- designates the ability of a
lation is reported as the selecting construction
laboratory-constructed assemblies to meet certain
Sound Transmission Class assembly to contain a fire
(STC), whereas impact fire-resistance require-
in a carefully controlled test ments, caution must be
noise, tested on floor-ceil- setting for a specified peri-
ing systems only, is report- used to ensure that each
od of time. Such an assem- component of the assembly
ed as the Impact Insulation bly might be a partition, a
Class (IIC). is the one specified in the
floor/ceiling, a roof/ceiling, test. Further, precaution
When selecting systems based or a protected beam or col- should be taken that assem-
on laboratory performance umn. The degree that bly procedure is in accor-
ratings, it should be clearly assemblies put together and dance with that of the test-
understood that field condi- tested under controlled lab- Control joints prevent
ed assembly. cracking in large areas of
tions such as flanking oratory conditions retard
paths, air leaks, etc. caused the spread of damaging For fire safety information, go to gypsum board.
by design or workmanship heat is measured in inter- www.nationalgypsum.com.
can reduce acoustical per- vals of time. For example, if CONTROL JOINTS AND PARTITION CONTROL
formance. For these rea- a construction assembly in ISOLATION DETAILS JOINTS
sons National Gypsum the laboratory adequately Though most systems referred In long expanses of partitions
Company cannot guarantee contains the heat for two to in this manual are non- such as corridors, control
the performance ratings hours and meets other load-bearing, they need joints should be used at
of specific construction requirements during the structural consideration of least every 30'. Door and
assemblies erected in laboratory fire test, it is their ability to retain window openings create
the field. given a two-hour fire resis- integrity over a period of stress points in partitions
To achieve maximum sound tance rating. time and be relatively rigid. and are recommended
isolation from an assembly, Fire tests may be conducted at When other elements such locations for control joints.
published construction any of several recognized as doors, fixtures, cabinets, Where jambs extend from
details must be followed facilities. Partitions, etc., are affixed or joined to floor to ceiling and are
completely. The use of floor/ceilings, roof/ceilings, a drywall or plaster system, spaced not farther apart
non-hardening, permanent, beams and columns are provision must be made to than 30', no control joints
resilient, acoustical sealant tested in accordance with ensure that these loads are are required. When
is recommended to seal off ASTM Standard E 119, Fire adequately supported. “through-wall” control
air leaks at floor, ceiling, Tests of Building and Structural framing, com- joints are required in fire
and partition or wall inter- Construction Materials. pletely separate from the rated assemblies, special
sections. Fire-resistance ratings are system, may be necessary details are necessary which
based on full-scale tests to support eccentric or are shown on page 96.
In selecting a construction sys- They are based on
tem where sound isolation under controlled conditions heavy loads.
and are generally recog- Warnock-Hersey Report
is important it is necessary CONTROL JOINTS WHI 651-0318.1.
to take into account the nized by building code
authorities and fire insur- Control joints are frequently CEILING CONTROL JOINTS
building’s overall structural necessary to prevent crack-
design, openings, type of ance rating bureaus. For large expanses of ceilings
ing in the gypsum board
occupancy, location and Requirements for fire-resis- and plaster systems. with perimeter relief,
background noise level. tance ratings are usually Isolation should always be control joints must be
The complexity of the pro- assigned by local building considered where structural located a maximum of 50'
posed system will necessar- code officials based on the elements such as slabs, o.c. in either direction;
ily affect the final cost and expected occupancy of the columns, or exterior walls without perimeter relief,
possibly the in-place space. It is critical that you can bear directly on non- 30' o.c. maximum in either
acoustical performance of review plans in the bid load-bearing partitions. direction. Control joints
the system. stage to ensure that the should be installed where
details drawn match the Gypsum as well as other framing or furring changes
The national standard for air- building products and
borne sound testing, ASTM referenced design numbers. direction.
If the detail drawn does not materials are subject to
E 90, measures the sound some form of movement PERIMETER CONTROL
transmission loss from 125 match the assembly design JOINTS
number as listed in the induced by changes in
to 4,000 Hertz. It is mea- moisture or temperature, or Acceptable perimeter control
sured at 16 one-third Gypsum Association Fire
Resistance Design Manual, both. To relieve the stresses joints in systems do not
octave frequencies. The which occur as a result of adversely affect fire or
data measured in ASTM UL Fire Resistance
Directory, or Factory such movement, control sound ratings. The use of
E 90 is then fitted to the joints are required in both perimeter control joints in
STC curve as is specified in Mututal Specification
Tested Products Guide, partitions and ceilings. fire-rated assemblies is
ASTM E 413. The STC described in UL Report
should not be compared contact the architect for a Location of control joints is
clarification. the ultimate responsibility R-4024-7-8 and Factory
with FSTC values that are Mutual Report 16738.69.
obtained from field sound Fire-resistant ratings represent of the design professional.
transmission loss tests fol- the results of controlled REQUEST TEST COPIES BY
lowing ASTM E 336 proce- laboratory tests on assem- CALLING 1-800-NATIONAL
dures. The method used to blies made of specific con- (1-800-628-4662).
determine FSTC ratings is
different and cannot be

8 NATIONAL GYPSUM SOUND AND FIRE RATED ASSEMBLIES

QUICK SELECTOR INDEX - FIRE/SOUND

REFERENCE
GENERAL
Gypsum Plaster – Metal Lath 1-hr UL U410 16
Fire Rating Design No. Page 1 1⁄2-hr OSU T-3240 16
1-hr OSU T-147 11 2-hr UL V449 16
1-hr OSU T-129 11 2-hr UL V438 16
2-hr UL U413 11 2-hr UL U420 16
2-hr NBS 11 2-hr UL U412 16
2-hr UL U411 16
Gypsum Plaster Fireproofing Columns 2-hr WHI 495-0236 16
(10WF49 or heavier) 2-hr UL V452 17
2-hr ITS/WHI J98-32931 17
Fire Rating Design No. Page
3-hr UL U435 17
1-hr BMS 92/40 12 3-hr WHI 694-0084 17
2-hr UL X402 12 3-hr UL V438 17
3-hr UL X402 12 4-hr UL U435 17
4-hr UL X402 12 4-hr WHI 694-108.1 17
4-hr UL V438 17
Gypsum Plaster Fireproofing Beams
(8WF24 or heavier) Gypsum Board Partitions –
Fire Rating Design No. Page Steel Framing (load bearing)
2-hr UL R4197-1 12 Fire Rating Design No. Page
3-hr UL R4197-1 12 1-hr UL U425 18
2-hr FM WP-199 18
Veneer Plaster Partitions 2-hr UL U425 18
Fire Rating Design No. Page 3-hr UL U426 18
1-hr U of Cal. E.S.6727 12
1-hr U of Cal. E.S.6892 12 Gypsum Board Partitions/Durasan
Prefinished Gypsum Board
Gypsum Board Partitions – Fire Rating Design No. Page
Wood Framing 1-hr FM WP-109 18
Fire Rating Design No. Page 1-hr UL U405 18
45 min. UL U317 12 2-hr UL U411 18
1-hr UL U305 12
1-hr UL U309 13
1-hr UL U340 13 Gypsum Board Partitions/Solid
1-hr WHI 694-0200 13 Fire Rating Design No. Page
1-hr UL U312 13 1-hr FM WP-671 19
2-hr FM WP-360 13 2-hr UL U525 19
2-hr UL U301 13 2-hr FM WP-668 19
1-hr WHI 651-0319 14 2-hr UL U505 19
2-hr UL U302 13 2-hr UL U529 19
2-hr UL U371 14
Gypsum Board Partitions –
Shaftwalls, Area Separation Walls
Gypsum Board Partitions – Fire Rating Design No. Page
Steel Framing 1-hr UL U499 19
Fire Rating Design No. Page 1-hr FM WP-755 19
1-hr OSU T-3296 14 2-hr UL U498 19
1-hr UL U420 14 2-hr FM WP-545 19
1-hr UL V401 14 2-hr U of Cal. 75-19 ES 7407 19
1-hr UL V438 14 2-hr UL U429 19
1-hr UL U451 14 2-hr UL U497 19
1-hr FM WP-45 15 2-hr FM WP-636 19
1-hr OSU T-1770 15 2-hr WHI 651-0500.05 19
1-hr UL U465 15 2-hr U of Cal. 75-17 ES 7408 19
1-hr UL V452 15 2-hr UL U428 20
1-hr FM WP-66 15
1-hr FM WP-733 15

NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE 9

QUICK SELECTOR INDEX - FIRE/ SOUND (CONT.)

2-hr FM WP-621 20 Gypsum Board Floor/Ceiling –

2-hr FM WP-612 20 Light Gauge Steel Framing
4-hr UL V451 20 Fire Rating Design No. Page
2-hr WHI 694-0200.6 20 1-hr UL L524 24
2-hr WHI 651-0508 20 1 1⁄2-hr UL L527 24
2-hr UL U347 20 1-hr UL L565 24

Gypsum Board Column Fireproofing

(light column) Gypsum Board Floor/Ceiling –
Fire Rating Design No. Page Steel Framing (steel joists with
1-hr UL X528 21 concrete floor)
1 1/2-hr UL X531 21 Fire Rating Design No. Page
2-hr UL X528 21 1-hr OSU T-1936 24
1-hr FM FC-134 25
Gypsum Board Column Fireproofing 2-hr UL G503 24
(heavy column) 2-hr UL G514 25
Fire Rating Design No. Page 3-hr UL G512 25
1-hr UL X528 21 2-hr FM FC-134 25
2-hr UL X528 21 2-hr UL G523 25
3-hr UL X510 21 2-hr UL D502 25
4-hr UL X501 21 2-hr UL G222 25
2-hr UL X520 21 2-hr FM FC-299 25
3-hr UL X513 21 1 1⁄2-hr UL G259 25
1 1⁄2- hr FM FC-300 25
Gypsum Board Beam Fireproofing
Fire Rating Design No. Page Gypsum Board Roof/Ceiling –
2-hr UL N501 22 Light Gauge Steel Framing
(pitched roof truss)
Gypsum Board Floor/Ceiling –
Wood Framing (wood joist) Fire Rating Design No. Page
Fire Rating Design No. Page 1-hr UL P540 26
1-hr UL L522 22 1-hr UL P541 26
1-hr UL L501 22 2-hr UL P543 26
1-hr UL L515 22
1-hr FM FC-181 22
1-hr FM FC-193 22 Gypsum Board Roof/Ceiling –
1-hr FM FC-172 22 Steel Framing (steel joists)
2-hr UL L505 22 Fire Rating Design No. Page
1-hr FM RC-227 26

Gypsum Board Floor/Ceiling –

Wood Framing (floor truss) Gypsum Board Horizontal Shaftwall
Fire Rating Design No. Page Duct Protection
1-hr UL L558 23 Fire Rating Design No. Page
1-hr FM FC-442 23 2-hr WHI 694-0300.1 26
1-hr UL L528 23
1-hr FM FC-448 23
1-hr FM FC-214 23
2-hr UL L538 23

Gypsum Board Roof/Ceiling –

Wood Framing (pitched roof truss)
Fire Rating Design No. Page
1-hr UL P533 23

10 NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE

 GENERAL REFERENCE
QUICK SELECTOR FOR FIRE AND
SOUND RATED SYSTEMS

SELECTOR
QUICK
NOTES FOR USE OF QUICK SELECTOR GYPSUM BOARD CORE UL DESIGNATIONS
The construction systems shown here are representative of the
many National Gypsum Drywall partitions and ceilings 1/2" (12.7 mm) Fire-Shield C: FSW-C
systems using Gold Bond BRAND products that have been the 1/2" (12.7 mm) XP Fire-Shield C: FSMR-C
subject of controlled laboratory testing or engineering 5/8" (15.9 mm) Fire-Shield: FSW
evaluations. For a given Fire Resistance Rating or Sound 5/8" (15.9 mm) XP Fire-Shield: FSW-3
Isolation value, simply scan the appropriate columns. Design 5/8" (15.9 mm) Fire-Shield C: FSW-C
references prefixed by “Based on...” are extrapolations from
test data on similar assemblies. 1/2" (12.7 mm) Fire-Shield C Kal-Kore: FSK-C
In the drawings, in steel or wood stud partitions where insulation 5/8" (15.9 mm) Fire-Shield Kal-Kore: FSK
is shown in half of the partition cavity, the insulation is 5/8" (15.9 mm) Hi-Abuse XP Fire-Shield: FSW
required for sound ratings only. Where shown across full 5/8" (15.9 mm) Hi-Impact XP Fire-Shield: FSW-5
cavity, insulation is required for fire rating. Size of studs are 5/8" (15.9 mm) Fire-Shield Exterior Soffit Board: FSW
minimum and spacing of studs are maximum for fire rating. 5/8" (15.9 mm) Fire-Shield Jumbo Sheathing: FSW-3
Steel studs are 25 gauge if not specified.
5/8" (15.9 mm) Fire-Shield e 2 XP: FSW-6
In the following Quick Selector, Underwriters Laboratories, Inc.
Design Numbers refer to designs contained in the UL Fire 1" (25.4 mm) Fire-Shield Shaftliner: FSW
Resistance Directory. National Gypsum Company, Gold Bond 1" (25.4 mm) Fire-Shield Shaftliner XP: FSW
BRAND Fire-Shield and Fire-Shield C products bear the UL
Classification Mark and are covered by UL’s Classification KEY TO ABBREVIATIONS:
and Follow-Up Service.
UL – Underwriters Laboratories, Inc.
In the following listings, 5/8" Fire-Shield C Gypsum Board may OSU – Building Research Laboratories
be substituted for 5/8" Fire-Shield in all designs listed for 5/8" The Ohio State University
Fire-Shield. 5/8" Fire-Shield C must be used in designs listed FM – Factory Mutual Research Corporation
for 5/8" Fire-Shield C. GA – Gypsum Association
Descriptions in the Quick Selector tables are summaries. For OC – Owens-Corning Fiberglas Corp.
(Tests by Geiger & Hamme)
copies of tests and/or for detailed information, consult your BBN – Bolt Beranek & Newman
National Gypsum Field Representative (reference inside back TL – Indicates tests for National Gypsum Company
cover). by Riverbank Acoustical Laboratories
NGC – National Gypsum Company
WHI – Warnock-Hersey International, Inc.
U. of Cal. – University of California
PFS – PFS Corporation
NBS – National Bureau of Standards
BMS – Building Materials and Structures
ITS – Intertek Testing Services

QUICK SELECTOR FOR FIRE AND SOUND RATED SYSTEMS

Gypsum Plaster Partitions - Metal Lath (CAD FILE NAME GOLDA.DWG OR GOLDA.DXF)
No. Fire Rating Ref. Design No. Description STC Test No.
1 1 hr. OSU T-147 1 1/2" (38.1 mm) gypsum plaster, 100:2 1/2 perlite None None
(scratch and brown coats), on metal lath attached to
3/4" (19.0 mm) channel studs at 16" o.c. (406 mm).

2 1 hr. OSU T-129 2" (51 mm) gypsum plaster, 1:2 sand, on 3.4 diamond 37 NBS 171A
mesh lath attached to 3/4" (19.0 mm) channel studs at
16" o.c. (406 mm).

3 2 hr. UL U413 2 1/2" (63.5 mm) gypsum plaster, 100:2 perlite, on 3.4 diamond 33 Est.
mesh lath attached to 3/4" (19.0 mm) channel studs at 16" o.c.
(406 mm).

4 2 hr. NBS 2 1/2" (63.5 mm) gypsum plaster, 100:2 vermiculite scratch None None
coat, 100:3 vermiculite brown coat on metal lath attached to
3/4" (19.0 mm) channel studs at 16" o.c. (406 mm).

*The fire resistance of the above assemblies was determined with one plane of metal lath. The assemblies with two planes of metal lath may be considered to have
equivalent fire-resistant ratings.

NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE 11

QUICK SELECTOR FOR FIRE AND SOUND RATED SYSTEMS
Gypsum Plaster Fireproofing Columns (10WF49 or heavier) (CAD FILE NAME GOLDB.DWG OR GOLDB.DXF)
No. Fire Rating Ref. Design No. Description STC Test No.
FIRE – SOUND
1 1 hr. BMS 92-Table 40 3/4" (19.0 mm) gypsum plaster, 1:3 sand scratch, 1:3 None None
GA CM 1300 sand brown on metal lath.

2 2 hr. UL X402 1" (25.4 mm) gypsum plaster, 100:2 perlite scratch, None None
GA CM 2320 100:3 perlite brown, on self-furring lath.

3 3 hr. UL X402 1 3/8" (34.9 mm) gypsum plaster, 100:2 perlite scratch, None None
GA CM 3310 100:3 perlite brown, on self-furring lath.

4 4 hr. UL X402 1 3/4" (44.5 mm) gypsum plaster, 100:2 perlite scratch, None None
GA CM 4410 100:3 perlite brown, on self-furring lath.

Gypsum Plaster Fireproofing Beams (8WF24 or heavier) (CAD FILE NAME GOLDC.DWG OR GOLDC.DXF)

1 2 hr. UL R4197-1 1 1/8" (28.6 mm) gypsum plaster, 100:2 1/2 perlite scratch None None
GA BM 2221 coat, 100:2 1/2 perlite brown coat on self-furring lath.

2 3 hr. UL R4197-1 1 1/4" (38.1 mm) gypsum plaster, 100:2 1/2 perlite scratch None None
GA BM 3110 coat, 100:2 1/2 perlite brown coat on self-furring lath.

Veneer Plaster Partitions-Wood Framing (CAD FILE NAME GOLDD.DWG OR GOLDD.DXF)

No. Fire Rating Ref. Design No. Description STC Test No.
1 1 hr. U. of Cal. E.S. 6727 3/32" (2.4 mm) Veneer Plaster applied to 1/2" (12.7 mm) 34 NGC 2161
Fire-Shield C Kal-Kore nailed to both sides of wood studs
16" o.c. (406 mm).

Veneer Plaster Partitions-Steel Framing (CAD FILE NAME GOLDE.DWG OR GOLDE.DXF)

1 1hr. U. of Cal. E.S. 6892 3/32" (2.4 mm) Veneer Plaster applied to 1/2" (12.7 mm) 42 est.
Fire-Shield C Kal-Kore on both sides of 2 1/2" (63.5 mm)
steel studs 24" o.c. (610 mm) with 1" (25.4 mm) screws
12" o.c. (144 mm) and 9" o.c. (229 mm) along edges.
Studs 16" o.c. (406 mm) preferred method.

For additional Kal-Kore Fire and Sound rated systems reference gypsum board systems.

Gypsum Board Partitions-Wood Framing (load-bearing) (CAD FILE NAME GOLDH.DWG OR GOLDH.DXF)
No. Fire Rating Ref. Design No. Description STC Test No.
FIRE – SOUND
1 45 min. UL U317 1/2" (12.7 mm) Fire-Shield C Gypsum Board or 1/2" 34 NGC 2161
(12.7 mm) Fire-Shield C Kal-Kore plaster base nailed both
sides 2 x 4 (38 mm x 89 mm) studs, 16" o.c. (406 mm).

2 1 hr. UL U305 5/8" (15.9 mm) Fire-Shield Gypsum Board, 5/8" (15.9 mm) 35 NGC 2403
GA WP 3605 Fire-Shield Kal-Kore plaster base or 5/8" (15.9 mm) Fire-Shield
XP Board nailed both sides 2 x 4 (38 mm x 89 mm)
wood studs, 16" o.c. (406 mm).

12 NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE

 GENERAL REFERENCE

QUICK SELECTOR FOR FIRE AND SOUND RATED SYSTEMS

SELECTOR
QUICK
Gypsum Board Partitions-Wood Framing (load-bearing) (cont’d) (CAD FILE NAME GOLDH.DWG OR GOLDH.DXF)
No. Fire Rating Ref. Design No. Description STC Test No.
FIRE – SOUND

3 1 hr. UL U309 5/8" (15.9 mm) Fire-Shield Gypsum Board or 5/8" 38 NGC 2404
GA WP 3510 (15.9 mm) Fire-Shield XP Board nailed both sides
2 x 4 (38 mm x 89 mm) studs, 24" o.c. (610 mm).

4 1 hr. UL U340 5/8" (15.9 mm) Fire-Shield C Gypsum Board nailed or 45 Based on
screwed 7" o.c.(178 mm) to 2x4 (51 mm x 102 mm) NGC 2375
wood studs 24" o.c. (610 mm) staggered 12" o.c.
(305 mm). Single 6" (152 mm) plate. Sound rating with
3 1/2" (88.9 mm) glass fiber in cavity.

5 1 hr. WHI 694-0200 5/8" (15.9 mm) Fire-Shield C Gypsum Board, screw applied 50 Based on
GA Based on to Resilient Furring Channel spaced 24" o.c. (610 mm) one side TL 77-138
WP 3230 only, on 2 x 4 (38 mm x 89 mm) studs spaced 24" o.c. (610 mm).
Other side 5/8" (15.9 mm) Fire-Shield C Gypsum Board screw
attached direct to studs. 3" (76 mm) mineral wool (3 pcf)
in stud cavity.
6 1 hr. UL U312 1/2" (12.7 mm) Fire-Shield C Gypsum Board, 1/2" (12.7 mm) 45 NGC 2321
FM WP-147 Fire-Shield C Kal-Kore plaster base or 1/2" (12.7 mm) Fire-Shield
GA WP 3341 C Durasan laminated to 1/4" Gypsum Board nailed to both
sides 2 x 4 (38 mm x 89 mm) studs, spaced 16" o.c. (406 mm).
7 2 hr. FM WP-360 5/8" (15.9 mm) Fire-Shield Gypsum Board base layer nail 40 Based on
GA WP 4135 applied horizontally to both sides 2 x 4 (38 mm x 89 mm) wood NGC 2363
studs, spaced 24" o.c. (610 mm). Face layer 5/8" (15.9 mm)
Fire-Shield Gypsum Board nail applied horizontally to both sides.
Rating also applies with 5/8" (15.9 mm) Fire-Shield Kal-Kore plaster base.
8 est. FM Based on Two layers 5/8" (15.9 mm) Fire-Shield Gypsum Board nailed 50 NGC 2368
2 hr. WP-360 one side to 2 x 4 (38 mm x 89 mm) wood studs, 16" o.c.
GA Based on (406 mm). Two layers other side screw applied to Resilient
WP 4135 Furring Channels spaced 24" o.c. (610 mm). Rating also
applies with 5/8" (15.9 mm) Fire-Shield Kal-Kore plaster base.
9 2 hr. FM Based on Two layers 5/8" (15.9 mm) Fire-Shield Gypsum Board nail 51 NGC 2377
WP-360 applied horizontally to both sides of 2 x 4 (38 mm x 89 mm)
GA WP 3910 wood studs 16" o.c. (406 mm) staggered 8" o.c. (203 mm).
Single 6" (152 mm) plate. Rating also applies with 5/8" (15.9 mm)
Fire-Shield Kal-Kore plaster base.
10 2 hr. FM Based on 5/8" (15.9 mm) Fire-Shield Gypsum Board base layer applied 58 NGC 3056
WP-360 vertically,nailed 24" o.c. (610 mm). Face layer 5/8" (15.9 mm)
GA WP 3820 Fire-Shield Gypsum Board applied horizontally, nailed 8" o.c.
(203 mm). Double row of 2 x 4 (38 mm x 89 mm) wood studs
16" o.c. (406 mm) on separate plates, sound rating with 3 1/2"
(88.9 mm) mineral wool or glass fiber in cavity. Rating also
applies with 5/8" (15.9 mm) Fire-Shield Kal-Kore plaster base.
11 2 hr. UL U301 Two layers of 5/8" (15.9 mm) Fire-Shield Gypsum Board 40 NGC 2363
or 5/8" (15.9 mm) Fire-Shield Kal-Kore plaster base nail applied
to 2 x 4 (38 mm x 89 mm) wood studs spaced 16" o.c (406 mm).
Boards may be applied horizontally or vertically with all joints staggered.
EXTERIOR WALLS
12 2 hr. UL U302 Two layers 5/8" (15.9 mm) Fire-Shield Gypsum Board
GA WP 8410 nailed horizontally or vertically to inside face of 2 x 4
(38 mm x 89 mm) wood studs 16" o.c. (406 mm).
1/2" (12.7 mm) gypsum sheathing or e2XP sheathing
nailed to outside face of studs, brick veneer facing.
13 1 hr. UL Based on 5/8" (15.9 mm) Fire-Shield Gypsum Board nailed
U309 horizontally or vertically to inside face of 2 x 4
GA WP 8105 (38 mm x 89 mm) wood studs 24" o.c. (406 mm).
5/8" (15.9 mm) Fire-Shield Gypsum Sheathing
e2XP sheathing nailed vertically to outside face of
studs 7" o.c. (178 mm) in field, 4" o.c. (102 mm)
perimeter. Exterior cladding attached through sheathing
into studs.

NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE 13

QUICK SELECTOR FOR FIRE AND SOUND RATED SYSTEMS
Gypsum Board Partitions-Wood Framing (load-bearing) (cont’d) (CAD FILE NAME GOLDH.DWG OR GOLDH.DXF)
No. Fire Rating Ref. Design No. Description STC Test No.
FIRE – SOUND

14 1 hr. WHI 651-0319 5/8" (15.9 mm) Fire-Shield C Gypsum Board horizontally nailed
to one side of horizontal 2 x 4 (38 mm x 89 mm) girts spaced
24" o.c. on 6 x 6 wood columns spaced 8'-0" o.c. Metal cladding
vertically screw attached to exterior horizontal girts with 3" thick
mineral fiber insulation nailed to interior of exterior girts.

15 2 hr. UL U371 Two layers 5/8" (15.9 mm) Fire-Shield Gypsum Board screw attached horizontally
GA WP 8417 or vertically to inside face of 2 x 4 (38 mm x 89 mm) wood studs spaced
16" o.c. 5/8" (15.9 mm) Fire-Shield Gypsum Sheathing or e2XP sheathing
nail or screw attached horizontally to outside of studs. Portland Cement Stucco facing.
3" (76 mm) mineral wool in stud cavity.

Gypsum Board Partitions-Steel Framing (CAD FILE NAME GOLDJ.DWG OR GOLDJ.DXF)

No. Fire Rating Ref. Design No. Description STC Test No.

1 1 hr. OSU T-3296 5/8" (15.9 mm) Fire-Shield Gypsum Board, 5/8" (12.7 mm) 38 NGC 2384
GA WP 1340 Fire-Shield Kal-Kore plaster base, or 5/8" Fire-Shield
XP Gypsum Board screw attached vertically to both sides 1 5/8"
(41.3 mm) steel studs, 24" o.c. (610 mm). Gypsum board joints
staggered.

2 1 hr. UL U420 Chase wall, 5/8" (15.9 mm) Fire-Shield Gypsum Board screw 52 TL 76-155
GA WP 5015 attached vertically to both sides. Air space minimum 4 1/2"
(114.3 mm) between inside gypsum board faces. Sound rating
with 3 1/2" (88.9 mm) mineral wool or glass fiber. 1 5/8"
(41.3 mm) steel studs, 24" o.c., (610 mm) cross braced at third
points with 5/8" (15.9 mm.) Gypsum board gussets 9 1/2" x 12"
(241.3 mm x 305 mm) or 9 1/2" (241.3 mm) long stud track.
3 1 hr. OSU Based On 5/8" (15.9 mm) Fire-Shield Gypsum Board, 5/8" (12.7 mm) 40 NGC 2438
T-3296 Fire-Shield Kal-Kore plaster base or 5/8" (15.9 mm) Fire-Shield
XP Gypsum Board screw attached vertically to both sides 2 1/2"
(63.5 mm) steel studs, 24" o.c. (610 mm). Gypsum board joints
staggered.

GA WP 1340 With 2 1/2" (63.5 mm) of mineral wool or glass fiber in cavity. 45 NGC 2391

4 1 hr. UL V401 1/2" (12.7 mm) Fire-Shield C Gypsum Board or 1/2" 45 NGC 2179
UL V438 (12.7 mm) Fire-Shield C Kal-Kore plaster base screw attached
FM WP-51 vertically to both sides 2 1/2" (63.5 mm) steel studs, 24" o.c.
GA WP 1070 (610 mm). 2" (51 mm) mineral wool [2.5 pcf (40 kg/m3)]
in stud cavity. Gypsum board joints staggered.

1 hr. UL V401 1/2" (12.7 mm) Fire-Shield C Gypsum Board or 1/2"

UL V438 (12.7 mm) Fire-Shield C Kal-Kore plaster base screw attached
FM WP-731 horizontally to both sides, 2 1/2" (63.5 mm) steel studs, 24"
GA WP 1071 o.c. (610 mm). 2" (51 mm) mineral wool [3 pcf (48 kg/m3)]
in stud cavity. Horizontal joints not staggered with those on
the opposite side of partition.

5 1 hr. UL U451 1/2" (12.7 mm) Fire-Shield C Gypsum Board screw applied est. 50
to resilient furring channel spaced 24" o.c. (610 mm) one side
only, on 2 1/2" (63.5 mm) steel studs spaced 24" o.c. (610 mm).
Other side 1/2" (12.7 mm) Fire-Shield C Gypsum Board screw
attached direct to studs 3" (76 mm) mineral wool (3pcf) in stud cavity.

14 NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE

 GENERAL REFERENCE

QUICK SELECTOR FOR FIRE AND SOUND RATED SYSTEMS

SELECTOR
QUICK
Gypsum Board Partitions-Steel Framing (cont’d) (CAD FILE NAME GOLDJ.DWG OR GOLDJ.DXF)
No. Fire Rating Ref. Design No. Description STC Test No.
FIRE – SOUND
6 1 hr. FM WP 45 5/8" (15.9 mm) Fire-Shield Gypsum Board, 5/8" (15.9 mm) 38 NGC
GA WP 1350 Fire-Shield Kal-Kore plaster base or 5/8" (15.9 mm) Fire-Shield 2005004
XP Gypsum Board screw attached horizontally to both sides 3 5/8"
(92.1 mm) steel studs, 24" o.c. (610 mm). All gypsum board joints
staggered.
OSU T-1770 5/8" (15.9 mm) Fire-Shield Gypsum Board screw attached
vertically to both sides 3 5/8" (92.1 mm) steel studs, 24" o.c.
(610 mm). Gypsum board joints staggered.
2 1/2" (63.5 mm) mineral wool or glass fiber in cavity. 47 NGC
2386
UL U465 5/8" (15.9 mm) Fire-Shield Gypsum Board, 5/8" (15.9 mm) Fire-Shield
UL V438 Kal-Kore plaster base or 5/8" (15.9 mm) Hi-Impact XP Fire-Shield
GA WP 1081 Gypsum Board screw attached vertically with fasteners 8" o.c. (203 mm)
at edges and 12" o.c. (305 mm) in the field of the board to 3 5/8"
(92.1 mm) board to 3 5/8" (92.1 mm) steel studs spaced maximum
24" o.c. (610 mm) with joints staggered on opposite sides of the wall.

7 1 hr. UL V452 1/2" (12.7 mm) PermaBase cement board screw attached 45 NGC
ITS/WHI J99-4001 horizontally or vertically on one side to 3 5/8" steel studs 16" o.c. 2099015
(406 mm) and 5/8" (15.9 mm) Fire-Shield Gypsum Board screw
attached vertically on opposite side, joints staggered, 3" (76 mm)
thick mineral wool batts [2.5 pcf (40 kg/m3)] in stud cavity.

8 45 min. FM Based on 1/2" (12.7 mm) Fire-Shield C Gypsum Board or 1/2" 45 NGC 2146
WP-51 (12.7 mm) Fire-Shield C Kal-Kore plaster base screw attached
vertically to both sides 3 5/8" (92.1 mm) steel studs, 24" o.c.
(610 mm). 2" (51 mm) glass fiber in stud cavity.
Gypsum board joints staggered.

9 1 hr. UL Based on 1/2" (12.7 mm) Fire-Shield C Gypsum Board or 1/2" 45 NGC 2149
V401 (12.7 mm) Fire-Shield C Kal-Kore plaster base screw
FM Based on attached vertically to both sides 3 5/8" (92.1 mm) steel
WP-51 studs, 24" o.c. (610 mm). 2" (51 mm) mineral wool
GA WP 1070 [2.5 pcf (40 kg/m3)] in stud cavity. Gypsum board joints staggered.

10 1 hr. FM WP-66 1/2" (12.7 mm) Fire-Shield C Gypsum Board screw vertically 43 Based on
GA WP 1021 applied to 2 1/2" (63.5 mm) steel stud. Double layer on one side, NGC 2248
single layer on the other. Base layer screw attached, face layer and
single layer screwed at edges, adhesively attached along center.
Gypsum board joints staggered.

FM WP-733 2 1/2" (63.5 mm) screw studs, 24" o.c. (610 mm) double layer of
GA WP 1022 1/2" (12.7 mm) Fire-Shield Gypsum Board screw applied horizontally
one side with face layer staggered 2' (610 mm) from base layer.
Other side one layer screw applied horizontally. Face layer horizontal
joints each side not staggered.

11 1 hr. FM Based on 1/2" (12.7 mm) Fire-Shield C Gypsum Board screw attached 50 NGC 2253
WP-66 vertically to both sides 2 1/2" (63.5 mm) steel studs, spaced 24" o.c.
(610 mm). Second layer screw attached vertically to one side only
GA Based on and 3" (76 mm) glass fiber in cavity. Gypsum board joints staggered.
WP 1021

12 1 hr. FM Based on 1/2" (12.7 mm) Fire-Shield C Gypsum Board screw attached 44 NGC 2323
WP-66 vertically to both sides 3 5/8" (92.1 mm) steel studs, spaced 24"
o.c. (610 mm). Second layer screw attached vertically to one side
only. Gypsum board joints staggered.
GA Based on 3" (76 mm) glass fiber cavity. 50 Based on
WP 1021 NGC 2253

NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE 15

QUICK SELECTOR FOR FIRE AND SOUND RATED SYSTEMS
Gypsum Board Partitions-Steel Framing (cont’d) (CAD FILE NAME GOLDJ.DWG OR GOLDJ.DXF)
No. Fire Rating Ref. Design No. Description STC Test No.
FIRE – SOUND
13 1 hr. UL U410 1/2" (12.7 mm) Fire-Shield C Gypsum Board, 1/2" (12.7 mm) 45 NGC 2328
FM WP-152 Fire-Shield C Kal-Kore plaster base or 1/2" (12.7 mm) Fire-
GA WP 1051 Shield Durasan laminated to 1/4" (6.35 mm) Gypsum Board
screw attached both sides 2 1/2" (63.5 mm) steel studs,
24" o.c. (610 mm). Gypsum board joints staggered. 2" 53 NGC 2318
(51 mm) mineral wool or glass fiber in cavity.

14 1 1/2 hr. OSU T-3240 5/8" (15.9 mm) Fire-Shield Gypsum Board or 5/8" (15.9 mm) 44 NGC 2388
Fire-Shield XP Board screw attached vertically to both sides 3 5/8"
(92.1 mm) steel studs, 24" o.c. (610 mm). Second layer one side
only, laminated vertically. Gypsum board joints staggered.

15 2 hr. UL V449 5/8" (15.9 mm) Fire-Shield Gypsum Board screw attached
GA WP 1943 vertically to both sides 3 1/2" (88.9 mm) steel studs, spaced
24" o.c. (610 mm) Triple layer one side, single layer on the other.
Gypsum board joints staggered.

16 2 hr. UL V438 Two layers 1/2" (12.7 mm) Fire-Shield C Gypsum Board 45 est.
screw attached both sides 1 5/8" (41.3 mm) steel studs 24" o.c.
(610 mm). Base layers applied vertically, face layers applied
vertically or horizontally. Vertical joints staggered.

17 2 hr. UL U420 Chase wall. Two layers 5/8" (15.9 mm) Fire-Shield Gypsum 57 TL-76-156
GA WP 5105 Board screw attached vertically to 1 5/8" (41.3 mm) steel studs,
24" o.c. (610 mm). Air space minimum 4 1/2" (114.3 mm).
Sound rating with 3 1/2" (88.9 mm) mineral wool or glass fiber.
1 5/8" (41.3 mm) steel studs, 24" o.c., (610 mm) cross braced
at third points with 5/8” (15.9 mm) Gypsum board gussets 9 1/2" x 12"
9 1/2" x 12" (241.3 mm x 305 mm) or 9 1/2" (241.3 mm) long stud track.

18 2 hr. UL U412 Two layers 1/2" (12.7 mm) Fire-Shield C Gypsum Board or 46 NGC 2250
FM WP-635 1/2" (12.7 mm) XP Fire-Shield Gypsum Board screw attached
GA Based on both sides 2 1/2" (63.5 mm) steel studs, spaced 24" o.c. (610 mm).
WP 1615 Base layers vertical, face layers horizontal. All vertical joints staggered.

U. of Cal. UC9-7-64 3" (76 mm) glass fiber in cavity. 53 NGC 2252
GA Based on
WP 1545

19 2 hr. UL U411 Base layer 5/8" (15.9 mm) Fire-Shield Gypsum Board 55 NGC 2382
GA Based on screw attached vertically both sides to 2 1/2" (63.5 mm) steel
WP 1711 studs 24" o.c. (610 mm). Face layer laminated or screw
attached vertically both sides. 2 1/2" (63.5 mm) mineral wool
or glass fiber in cavity. Gypsum board joints staggered.
WHI 495-0236 Two layers 5/8" (15.9 mm) Fire-Shield Gypsum Board 56 NGC 3022
GA WP 1548 screw attached horizontally with vertical and horizontal joints
staggered and 3" (76 mm) mineral wool or glass fiber in cavity.

20 2 hr. UL V438 Two layers 5/8" (15.9 mm) Fire-Shield Gypsum Board
or 5/8" (15.9 mm) Hi-Impact XP Fire-Shield Gypsum Board base
layer screw attached vertically to both sides 2 1/2" (63.5 mm)
steel studs 24" o.c. (610 mm). Vertical joints staggered.

21 2 hr. UL U412 Two layers 1/2" (12.7 mm) Fire-Shield C Gypsum Board or 48 NGC 2282
FM Based on 1/2" (12.7 mm) XP Fire-Shield Gypsum Board screw attached
WP-635 both sides 3 5/8" (92.1 mm) steel studs, spaced 24" o.c. (610 mm).
Base layers vertical, face layers horizontal. All vertical joints staggered.

GA Based on
WP 1630 3" (76 mm) mineral wool or glass fiber in cavity. 53 NGC 2288

16 NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE

 GENERAL REFERENCE

QUICK SELECTOR FOR FIRE AND SOUND RATED SYSTEMS

SELECTOR
QUICK
Gypsum Board Partitions-Steel Framing (cont’d) (CAD FILE NAME GOLDJ.DWG OR GOLDJ.DXF)
No. Fire Rating Ref. Design No. Description STC Test No.
FIRE – SOUND
22 2 hr. OSU T-1771 First layer 5/8" (15.9 mm) Fire-Shield Gypsum Board 48 NGC 2282
GA Based on screw attached vertically both sides 3 5/8" (92.1 mm) steel
WP 1711 studs, spaced 24" o.c. (610 mm). Second layer laminated
vertically both sides. Vertical joints staggered.

23 2 hr. UL U411 First layer 5/8" (15.9 mm) Fire-Shield Gypsum Board 56 NGC 3022
GA WP 1616 screw attached vertically both sides 3 5/8" (92.1 mm) steel
studs, spaced 24" o.c. (610 mm). Second layer laminated or
screw attached vertically both sides and 3" (76 mm) mineral
wool or glass fiber in cavity. Vertical joints staggered.

24 2 hr. UL V452 1/2" (12.7 mm) PermaBase cement board face layer screw 52 NGC
ITS/WHI J98-32931 attached vertically over 1/2" (12.7 mm) Fire-Shield C Gypsum 2099016
Board base layer on one side to 3 5/8" steel studs 16" o.c.
(406 mm) and double layer of 1/2" (12.7 mm) Fire-Shield C
Gypsum Board applied vertically to opposite side with 3"
(76 mm) thick mineral wool insulation batts [2.5 pcf (40 kg/m3)]
in stud cavity. All joints staggered between face and base layers.

25 3 hr. UL U435 Three layers of 1/2" (12.7 mm) Fire-Shield C Gypsum Board 48 NGC 2631
WHI 694-0084 screw attached to each side of 1 5/8" (41.3 mm) steel studs,
GA WP 2921 24" o.c. (610 mm). Base and second layer vertical, face layer
horizontal. All gypsum board joints staggered.

1 1/2" (38.1 mm) mineral wool or glass fiber in cavity. 53 NGC 2636

26 3 hr. UL V438 Three layers of 5/8" (15.9 mm) Fire-Shield Gypsum Board 48 Based on
screw attached to each side of 1 5/8" (41.3 mm) steel studs, NGC 2631
24" o.c. (610 mm). Base and second layer vertical, face layer
vertical or horizontal. All gypsum board joints staggered.
1 1/2" (38.1 mm) mineral wool or glass fiber in cavity. 53
Based on
NGC 2633

27 4 hr. UL U435 Four layers of 1/2" (12.7 mm) Fire-Shield C Gypsum Board 51 NGC 2633
WHI 694-108.1 screw attached to each side of 1 5/8" (41.3 mm) steel studs,
GA WP 2970 24" o.c. (610 mm). Base, second and third layer vertical, face
layer horizontal. All gypsum board joints staggered except long
joints of base and second layer fall on the same studs.

GA WP 2960 1 1/2" (38.1 mm) mineral wool or glass fiber in cavity. 55 NGC 2634

28 4 hr. UL V438 Four layers of 5/8" (15.9 mm) Fire-Shield Gypsum Board 51 Based on
screw attached to each side of 1 5/8" (41.3 mm) steel studs, NGC 2633
24" o.c. (610 mm). Base, second and third layer vertical, face
layer vertical or horizontal. All gypsum board joints staggered.

1 1/2" (38.1 mm) mineral wool or glass fiber in cavity. 55 Based on

NGC 2633

NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE 17

QUICK SELECTOR FOR FIRE AND SOUND RATED SYSTEMS
Gypsum Board Partitions-Steel Framing (load-bearing) (CAD FILE NAME GOLDJ.DWG OR GOLDJ.DXF)
No. Fire Rating Ref. Design No. Description STC Test No.
FIRE – SOUND
1 1 hr. UL U425 One layer 5/8" (15.9 mm) Fire-Shield Gypsum Board
GA WP 1206 screw applied vertically to each side of 3 1/2" (88.9 mm)
20 gauge steel studs spaced 24" o.c. (610 mm), studs
laterally braced and fastened to tracks. All gypsum board
joints staggered on opposite sides.

2 2 hr. FM WP-199 Two layers 5/8" (15.9 mm) Fire-Shield Gypsum Board screw 40 est.
GA WP 1714 applied vertically to each side of 18 gauge 2 1/2" (63.5 mm)
steel studs spaced 16" o.c. (406 mm). Base layer joints staggered
16" (406 mm) from joints of base layer. Steel bridging required.

3 2 hr. UL U425 Two layers 5/8" (15.9 mm) Fire-Shield Gypsum Board
GA WP 1716 screw attached vertically to each side of 3 1/2" (88.9 mm)
20 gauge steel studs spaced 24" o.c. (610 mm), studs laterally
braced and fastened to tracks. All gypsum board joints staggered
on opposite sides. (Tested at 80 percent of design load.)

4 3 hr. UL U426 Four layers of 1/2" (12.7 mm) Fire-Shield C Gypsum

Board screw attached to each side of 3 1/2" (88.9 mm)
20 gauge steel studs spaced 24" o.c. (610 mm), studs
laterally braced and fastened to tracks. Base, second and
third layers applied vertical; face layer may be applied either
horizontal or vertical. All gypsum board joints staggered
from joints in adjacent layers and on opposite sides of studs.

Gypsum Board Partitions/Durasan Prefinished Gypsum Board (CAD FILE NAME GOLDK.DWG OR GOLDK.DXF)
No. Fire Rating Ref. Design No. Description STC Test No.
1 1 hr. FM WP-109 30" (762.0 mm) wide 5/8" (15.9 mm) Fire-Shield Durasan applied 44 NGC 2218
GA WP 6130 vertically to 2 1/2" (63.4 mm) steel studs 30" o.c. (762 mm) with steel
batten retainers attached to each stud with 1 1/4" (31.8 mm) Type S
screws spaced 9" o.c. (229 mm). Attach battens over retainers.
2" (51 mm) glass fiber in cavity.
UL U405 48" (1219 mm) wide 5/8" (15.9 mm) Fire-Shield Durasan applied 41 G&H NG-
GA WP 6040 vertically to 2 1/2" (63.5 mm) steel studs 24" o.c. (610 mm) with steel 145FT
batten retainers attached to each stud with 1 1/4" (31.8 mm) Type S
screws spaced 9" o.c. (229 mm). Stagger joints on opposite sides
24" o.c. (610 mm). Attach battens over retainers.

2 2 hr. UL U411 5/8" (15.9 mm) Fire-Shield Durasan laminated vertically with joint 56 NGC 3022
GA WP 1711 compound over base layer 5/8" (15.9 mm) Fire-Shield Gypsum
Board attached to 3 5/8" (92.1 mm) steel studs 24" o.c. (610 mm).
Face layer laminated with 3/8" (9.5 mm) beads of joint compound 2" o.c.
(51 mm). Face layer secured across top and bottom with 1 5/8"
(41.3 mm) Type S screws 12" o.c. (305 mm). Joints of outer layer
offset 12" (305 mm) from base layer joints. 3" (76 mm) glass fiber
or mineral wool in cavity.

18 NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE

 GENERAL REFERENCE

Gypsum Board Partitions/Solid (CAD FILE NAME GOLDL.DWG OR GOLDL.DXF)

SELECTOR
QUICK
No. Fire Rating Ref. Design No. Description STC Test No.
1 1 hr. FM WP-671 1" (25.4 mm) Fire-Shield Shaftliner with 1/2" (12.7 mm) regular 34 Based on
GA WP 1311 Gypsum Board laminated vertically with Sta-Smooth joint NGC 2359
compound, both sides.

2 2 hr. UL U525 1" (25.4 mm) Fire-Shield Shaftliner with 1/2" (12.7 mm) 34 Based on
FM WP-668 Fire-Shield C Gypsum Board laminated vertically with NGC 2359
GA WP 1841 Sta-Smooth joint compound, both sides.

3 2 hr. UL U505 1" (25.4 mm) Fire-Shield Shaftliner with 5/8" (15.9 mm)
GA WP 7210 Fire-Shield Gypsum Board laminated vertically with
Sta-Smooth joint compound, both sides.

4 2 hr. UL U529 1" (25.4 mm) Fire-Shield Shaftliner with 1/2" (12.7 mm)
Fire-Shield C Gypsum Board laminated vertically with
Sta-Smooth joint compound, both sides.

QUICK SELECTOR FOR FIRE AND SOUND RATED SYSTEMS

Gypsum Board Partitions-Shaftwalls, Area Separation Walls (CAD FILE NAME GOLDM.DWG OR GOLDM.DXF)
No. Fire Rating Ref. Design No. Description STC Test No.
FIRE – SOUND
1 1 hr. UL U499 2 1/2" (63.5 mm), 4" (102 mm) or 6" (152 mm) I-Studs, 37 NGC
FM WP-755 C-T Studs or C-H Studs 24" o.c. (610 mm). 1" (25.4 mm) 2001003
GA WP 6905 Fire-Shield Shaftliner or 1" Fire-Shield Shaftliner XP, one
layer of 5/8" (15.9 mm) Fire-Shield Gypsum Board applied
horizontally or vertically on side opposite shaftliner. Fire tested both sides.

1 1/2" (38.1 mm) mineral wool or glass fiber in cavity. 42 NGC 2542

2 2 hr. UL U498 2 1/2" (63.5 mm), 4" (102 mm) or 6" (152 mm) I-Studs, 40 NGC 2618
FM WP-545 C-T Studs or C-H Studs 24" o.c (610 mm). 1" (25.4 mm)
GA WP 7079 Fire-Shield Shaftliner or 1" Fire-Shield Shaftliner XP, and
1 layer of 1/2" (12.7 mm) Fire-Shield C Gypsum Board, 1/2"
GA ASW 1215 (12.7 mm) Fire-Shield C Kal-Kore veneer plaster base, or 1/2"
(12.7 mm) Fire-Shield C XP Gypsum Board applied horizontally
on each side. Horizontal and vertical joints staggered. Fire tested both sides.
both sides.

1 1/2" (38.1 mm) mineral wool or glass fiber in cavity. 45 NGC 2617

U. of Cal. 75-19 5/8" (15.9 mm) Fire-Shield Gypsum Board as face layers. 40 Based on
ES 7407 NGC 2618
GA WP 7077

3 2 hr. UL U429 2 1/2" (63.5 mm), 4" (102 mm) or 6" (152 mm) C-T Studs 40 Based on
GA WP 7084 or C-H Studs 24" o.c. (610 mm), 1" (25.4 mm), NGC 2618
Fire-Shield Shaftliner or 1" Fire-Shield Shaftliner XP and
1 layer of 1/2" (12.7 mm) Fire-Shield C Gypsum Board applied Based on
vertically on each side. Joints staggered 24" on opposite sides. NGC 2617

1 1/2" (38.1 mm) mineral wool or glass fiber in cavity. 45

4 2 hr. UL U497 2 1/2" (63.5 mm), 4" (102 mm) or 6" (152 mm) I-Studs, C-T 40 NGC 2615
FM WP-636 Studs or C-H Studs 24" o.c. (610 mm). 1" (25.4 mm) Fire-Shield
GA WP 7080 Shaftliner or 1" Fire-Shield Shaftliner XP and 2 layers of 1/2" (12.7 mm)
Fire-Shield C Gypsum Board, 1/2" (12.7 mm) Fire-Shield C Kal-Kore
veneer plaster base, or 1/2" (12.7 mm) Fire-Shield C XP Gypsum Board
on corridor side only, base layer horizontal, face layer vertical.
Fire tested both sides.
1 1/2" (38.1 mm) mineral wool or glass fiber in cavity. 47 NGC 2616
UL U497 2 1/2" (63.5 mm), 4" (102 mm) or 6" (152 mm) I-Studs, 40 Based on
WHI 651-0500.05 C-T Studs or C-H Studs 24" o.c. (610 mm). 1" (25.4 mm) Fire- NGC 2615
Shield Shaftliner or 1" Fire-Shield Shaftliner XP and two layers
1/2" (12.7 mm) Fire-Shield C Gypsum Board applied
horizontally on corridor side. Fire tested both sides.

U. of Cal. 75-17 2 layers 5/8" (15.9 mm) Fire-Shield Gypsum Board on corridor side. 40 Based on
ES 7408 NGC 2615
GA WP 7076

NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE 19

 QUICK SELECTOR FOR FIRE AND SOUND RATED SYSTEMS
Gypsum Board Partitions-Shaftwalls, Area Separation Walls (CAD FILE NAME GOLDM.DWG OR GOLDM.DXF)
No. Fire Rating Ref. Design No. Description STC Test No.
FIRE – SOUND

5 2 hr. UL U428 2 1/2" (63.5 mm), 4" (102 mm) or 6" (152 mm) C-T Studs 40 Based on
GA WP 7051 or C-H Studs 24" o.c. (610 mm). 1" (25.4 mm) NGC 2615
Fire-Shield Shaftliner or 1" Fire-Shield Shaftliner XP
and 2 layers of 1/2" (12.7 mm) Fire-Shield C Gypsum
Board, base layer horizontal, face layer vertical.
Based on
1 1/2" (38.1 mm) mineral wool or glass fiber in cavity. 47 NGC 2616

6 2 hr. FM WP-621 Elevator Control Boxes, 4" (102 mm) or 6" (152 mm) I-Studs None None
FM WP-612 24" o.c. (610 mm). 1" (25.4 mm) Fire-Shield Shaftliner or 1"
Fire-Shield Shaftliner XP and two layers 1/2" (12.7 mm)
Fire-Shield C Gypsum Board on side only, base layer horizontal,
face layer vertical. Control boxes corridor and conduit penetrations.

7 est. FM Based on 2 1/2" (63.5 mm), 4" (102 mm) or 6" (152 mm) I-Studs, C-T 51 BBN
2 hr. WP-636 Studs or C-H Studs 24" o.c. (610 mm). 1" (25.4 mm) Fire-Shield NGC 2609
Gypsum Shaftliner, or 1" Fire-Shield Shaftliner XP, Resilient Furring
Channels 24" o.c. (610 mm) on corridor side and two layers 1/2"
(12.7 mm) Fire-Shield C Gypsum Board on channels, 1 1/2"
(38.1 mm) mineral wool or glass fiber in stud cavity.

8 2 hr. FM Based on 2 1/2" (63.5 mm), 4" (102 mm) or 6" (152 mm) I-Studs, 50 BBN
WP-545 C-T Studs or C-H Studs 24" o.c. (610 mm). 1" (25.4 mm) NGC 2610
Fire-Shield Shaftliner or 1" Fire-Shield Shaftliner XP and 1
layer of 1/2" (12.7 mm) Fire-Shield C Gypsum Board or 1/2"
(12.7 mm) Fire-Shield C XP Gypsum Board on one side. Other
side 1 layer 1/2" (12.7 mm) Fire-Shield C Gypsum Board
screwed to Resilient Furring Channels 24" o.c. (610 mm) attached
to I-Studs with screws in alternate legs. 1 1/2" (38.1 mm) mineral
wool or glass fiber in cavity.

9 4 hr. UL V451 4" (102 mm) I-Studs, C-T Studs or C-H Studs 24" o.c. (610 mm)
GA WP 7691 1" (25.4 mm) Fire-Shield Shaftliner or 1" Fire-Shield Shaftliner XP
and five layers of 5/8" (15.9 mm) Fire-Shield C Gypsum Board
applied vertically to corridor side. Furring channel applied horizontally
16" o.c. (406 mm) over third layer. Vertical joints staggered.

10 2 hr. WHI 694-0200.6 2 layers of 1" (25.4 mm) Fire-Shield Shaftliner or 1" Fire-Shield 35 NGC 2827
Shaftliner XP inserted in 2" H-Stud 24" o.c. (610 mm). H-Studs and
Track covered by 1/2" (12.7 mm) Fire-Shield C Gypsum Board
6" (152 mm) wide strips.

11 2 hr. WHI 651-0508 2 layers of 1" (25.4 mm) Fire-Shield Shaftliner or 1" Fire-Shield 50 NGC 2826
Shaftliner XP inserted in 2" H-Stud 24" o.c. (610 mm). One nominal
2 x 4 (38 mm x 89 mm) wood stud wall one side. 1" (25.4 mm)
air space between Shaftliner and wood studs. Wood studs 16" o.c.,
(406 mm) faced with one layer 1/2" Regular Gypsum Board.
3 1/2" (88.9 mm) mineral wool or glass fiber in wood stud cavity. 55 NGC 2825

12 2 hr. UL U347 2 layers of 1" (25.4 mm) Fire-Shield Shaftliner or 1" Fire-Shield 50 NGC 2823
GA ASW 1005 Shaftliner XP inserted in 2" H-Stud 24" o.c. (610 mm). Adjacent
construction each side. Minimum 3/4" (19.0 mm) air space between
Shaftliner and adjacent construction.
3 1/2" (88.9 mm) mineral wool or glass fiber in both wood stud cavities. 61 TL 05-199
3 1/2" (88.9 mm) mineral wool or glass fiber in wood stud cavity one side. 55 NGC 2824

20 NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE

 GENERAL REFERENCE

QUICK SELECTOR FOR FIRE AND SOUND RATED SYSTEMS

SELECTOR
QUICK
Gypsum Board Column Fireproofing (CAD FILE NAME GOLDN.DWG OR GOLDN.DXF)
No. Fire Rating Ref. Design No. Description
LIGHT COLUMN
1 1 hr. UL X528 Two layers of 1/2" (12.7 mm) Fire-Shield C Gypsum Board furred from
GA CM 1452 TS 4x4x0.188 tube steel column by 1 5/8" (43.3 mm) steel stud each corner.

2 1 hr. UL X528 One layer of 5/8" (15.9 mm) Fire-Shield Gypsum Board furred from
GA CM 1851 TS 8x8x0.250 tube steel column by 1 5/8" (43.3 mm) steel stud each corner.

3 1 1/2 hr. UL X531 Two layers of 1/2" (12.7 mm) Fire-Shield C Gypsum Board furred from
4 1/2" OD steel pipe column (Min. wall thickness 0.109) by 1 5/8" (43.3 mm)
steel framing.

4 2 hr. UL X528 Base and second layer 1/2" (12.7 mm) Fire-Shield C Gypsum Board furred from
GA CM 2452 TS 4x4x0.188 tube steel column by 1 5/8" (43.3 mm) steel stud each corner.
Face layer 5/8" (15.9 mm) Fire-Shield Gypsum Board.

COLUMN (10WF–49)
5 1 hr. UL X528 One layer of 1/2" (12.7 mm) Fire-Shield C Gypsum Board furred from column by 1 5/8"
GA CM 1001 by 1 5/8" (41.3 mm) steel studs at each corner.

6 2 hr. UL X528 Base layer of 5/8" (15.9 mm) Fire-Shield Gypsum Board furred from column by 1 5/8"
GA CM 2017 (41.3 mm) steel studs at each corner. Face layer 1/2" (12.7 mm) Fire-Shield C Gypsum
Board.

7 3 hr. UL X510 Three layers of 5/8" (15.9 mm) Fire-Shield Gypsum Board furred from column by
GA CM 3120 1 5/8" (41.3 mm) steel studs at each corner.

8 4 hr. UL X501 Four layers of 5/8" (15.9 mm) Fire-Shield C Gypsum Board on each side of column.
Inner two layers furred from column by 1 5/8" (41.3 mm) steel studs at column corners.
Outer two layers attached to 2" x 2" (51 mm x 51 mm) sheet metal angles which are applied
at corners over first two layers of board.

COLUMN (14WF–228)

9 2 hr. UL X520 One layer of 1/2" (12.7 mm) Fire-Shield C Gypsum Board furred from column by
GA CM 2110 1 5/8" (41.3 mm) steel studs at each corner.

10 3 hr. UL X513 Two layers of 1/2" (12.7 mm) Fire-Shield C Gypsum Board furred from column by
GA CM 3130 1 5/8" (41.3 mm) steel studs at each corner.

NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE 21

QUICK SELECTOR FOR FIRE AND SOUND RATED SYSTEMS
Gypsum Board Beam Fireproofing (8WF24 or heavier) (CAD FILE NAME GOLDN.DWG OR GOLDN.DXF)
No. Fire Rating Ref. Design No. Description

1 2 hr. UL N501 Two layers of 5/8" (15.9 mm) Fire-Shield Gypsum Board applied to beam cage fabricated
GA BM 2120 from 25 gauge steel channel brackets spaced 24" o.c.

Gypsum Board Floor/Ceilings – Wood Framing (wood joists) (CAD FILE NAME GOLDS.DWG OR GOLDS.DXF)
No. Fire Rating Ref. Design No. Description STC Test No. IIC
No Carpet Carpet & Pad

1 1 hr. UL L522 1/2" (12.7 mm) Fire-Shield C Gypsum Board or 37 NGC 4042 32 66
GA FC 5410 1/2" (12.7 mm) Fire-Shield C Kal-Kore plaster base nail NGC 5032A
attached to 2 x 10 (38 mm x 241 mm) wood joists spaced NGC 5033
16" o.c. (406 mm). UL design L522 permits option of
floor topping over plywood.
1 hr. UL L501 5/8" (15.9 mm) Fire-Shield Gypsum Board, 5/8" 37 Based on 32 66
GA FC 5420 (15.9 mm) Fire-Shield Kal-Kore plaster base or 5/8" NGC 4024
(15.9 mm) F.S. Soffit Board nail attached to 2 x 10
(38 mm x 241 mm) wood joists spaced 16" o.c.
(406 mm). UL design L501 permits option of
Floor Topping Mixture over plywood.

2 1 hr. UL L515 1/2" (12.7 mm) Fire-Shield C Gypsum Board or 45 NGC 4010 39 63
1/2" (12.7 mm) Fire-Shield C Kal-Kore plaster base NGC 4107
screw attached to Resilient Furring Channels spaced NGC 5161
24" o.c. (610 mm) on 2 x 10 (38 mm x 241 mm) NGC 5165
wood joists 16" o.c. (406 mm). Gypsum Board secured to
channels with 1" self-drilling screws 12" o.c. (305 mm).
Option in UL L515 allows Drywall Suspension System
to be hung from joists. No insulation in plenum.
FM FC 181 With 3 1/2" (88.9 mm) glass fiber. est. 50

3 1 hr. FM FC 193 1/2" (12.7 mm) Fire-Shield C Gypsum Board 58 OC-2MT

attached to Resilient Furring Channels spaced
24" o.c. (610 mm) with screws spaced 12" (305 mm).
Elastizell concrete floor 1 1/2" (38.1 mm) thick, 3 1/2"
(88.9 mm) mineral wool or glass fiber insulation
2 x 10 (38 mm x 241 mm) wood joists 16" o.c. (406 mm).

4 1 hr. FM FC-172 Base layer 5/8" (15.9 mm) Fire-Shield Gypsum Board
GA FC 5406 attached with screws 24" o.c. (610 mm) to wood joists
GA RC 2601 or trusses 24" o.c. (610 mm). Second layer 5/8"
GA RC 2602 (15.9 mm) Fire-Shield Gypsum Board or 5/8" (15.9 mm)
F.S. Soffit Board screw attached 12" o.c. (305 mm).
1/2" (12.7 mm) plywood floor. Ceiling provides one
hour fire resistance protection for wood framing,
including trusses.
5 2 hr. UL L505 5/8" (15.9 mm) Fire-Shield C Gypsum est. 45
GA FC 5724 Board, base layer nailed at right angles to
2 x 10 (38 mm x 241 mm) wood joists
spaced 16" o.c. (406 mm), resilient furring
channels spaced 24" o.c. (610 mm) and nailed
through base board into and at right angles to joists.
Face layer of 5/8" (15.9 mm) Fire-Shield C Gypsum
Board screwed to furring channel. Nominal 1"
(25.4 mm) T & G sub and finish floor. Optional
floor systems consist of Floor Topping Mixture
over plywood. Rating also applies with 5/8"
(15.9 mm) Fire-Shield C Kal-Kore plaster base.

22 NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE

 GENERAL REFERENCE

QUICK SELECTOR FOR FIRE AND SOUND RATED SYSTEMS

SELECTOR
QUICK
Gypsum Board Floor/Ceilings – Wood Framing (floor truss) (CAD FILE NAME GOLDS.DWG OR GOLDS.DXF)
No. Fire Rating Ref. Design No. Description STC Test No. IIC

6 1 hr. UL L558 One layer 5/8" (15.9 mm) Fire-Shield C Gypsum Board
GA FC 5514 or 5/8" (15.9 mm) Fire-Shield C Kal-Kore plaster base
screw attached to 1/2" (12.7 mm) resilient furring channel
spaced 12" o.c. to lower chord of 18" (457.2 mm) deep
wood trusses of 2 x 4 (38 mm x 89 mm) lbr. with steel
truss plates spaced 24" o.c. (610 mm) 23/32" (18.2 mm)
23/32" (18.2 mm) plywood subfloor with 15/32" (11.9 mm)
plywood finish floor.
Optional - 3 1/2" thick glass fiber insulation draped
over furring channels - Optional Ceiling damper.

7 1 hr. FM FC-442 One layer 5/8" (15.9 mm) Fire-Shield C Gypsum Board
GA FC 5517 applied perpendicular and screw attached directly to
the lower chord of 14" (35.6 mm) deep wood-webbed
trusses of 2 x 4 (38 mm x 89 mm) lbr. with Type
I.L.S. plates spaced 24" o.c. (610 mm). Edge joints
backed with 2 x 4 (38 mm x 89 mm) wood blocks
fastened to lower chord with Z-clips. 19/32" (15.1 mm)
plywood floor sheathing.

8 1 hr. UL L528 One layer 5/8" (15.9 mm) Fire-Shield C Gypsum Board
FM FC-448 screw attached to 7/8" (22.2 mm) furring channel
GA FC 5516 wire tied perpendicular to lower chord of wood-webbed
trusses of 2 x 4 (38 mm x 89 mm) lbr. with steel
truss plates spaced 24" o.c. (610 mm). Floor 3/4"
(19.1 mm) nominal plywood.

Optional resilient furring channels.

9 1 hr. FM FC 214 Two layers 1/2" (12.7 mm) Fire-Shield C Gypsum est. 43
GA FC 5512 Board each screwed perpendicular, with all joints
of face layer staggered 24" o.c. (610 mm) from base
layers, to 24" o.c. (610 mm) trusses fabricated
using connectors produced by members of the Truss
Plate Institute. 5/8" (15.9 mm) T & G (long sides)
plywood flooring nail applied across top chord of trusses.

10 2 hr. UL L538 5/8" (15.9 mm) Fire-Shield C Gypsum Board, base layer
screw attached perpendicular to bottom chord of 9 1/2"
(241.3 mm) deep “I” shaped wood spaced 19.2"
(487.8 mm) o.c. Resilient furring channel or 7/8"
(22.2 mm) deep furring channel spaced 16" o.c. screw
attached through base layer into and at right angles to joist.
5/8" (15.9 mm) Fire-Shield C Gypsum Board, middle and face
layers screw attached perpendicular to resilient furring
channel or 7/8" (22.2 mm) deep furring channel. 5/8"
(15.9 mm) T & G plywood floor sheathing. Rating also
applies with 5/8" (15.9 mm) Fire-Shield C Kal-Kore
plaster base.

NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE 23

QUICK SELECTOR FOR FIRE AND SOUND RATED SYSTEMS
Gypsum Board Roof/Ceilings – Wood Framing (Pitched Roof Truss)

11 1 hr. UL P533 Roof/ceiling, One layer 5/8" (15.9 mm) Fire-Shield C

GA RC 2603 Gypsum Board attached to 1/2" (12.7 mm) resilient furring
channel spaced 12" o.c. screw fastened perpendicular
to lower chord of wood trusses of 2 x 4 (38 mm x 89 mm)
lbr. with steel truss plates, spaced 24" o.c. (610 mm).
Roofing system UL Class A, B or C.

Optional - 3 1/2" thick glass fiber insulation draped over

furring channels - Optional Ceiling damper.

QUICK SELECTOR FOR FIRE AND SOUND RATED SYSTEMS

Gypsum Board Floor/Ceilings – Light Gauge Steel Framing
No. Fire Rating Ref. Design No. Description
1 1 hr. UL L524 Two layers 1/2" (12.7 mm) Fire-Shield C Gypsum
GA FC 4502 Board screw attached perpendicular, face layer
joints staggered from base layer joints, to 7" (178 mm)
deep, 18 gauge steel “C” shaped joists spaced 24" o.c.
(610 mm). 5/8" (15.9 mm) T & G plywood floor sheathing.

2 1 1/2 hr. UL L527 Two layers 5/8" (15.9 mm) Fire-Shield C Gypsum
Board screw attached perpendicular, face
layer joints staggered from base layer joints,
to resilient furring channels spaced 16" (406 mm)
o.c. on 9 3/8" deep, 16 gauge steel “C” shaped
joists spaced 24" o.c. (610 mm). 3/4" (19.0 mm)
T & G plywood floor sheathing.

QUICK SELECTOR FOR FIRE AND SOUND RATED SYSTEMS

Gypsum Board Floor/Ceilings – Light Gauge Steel Framing (floor truss) (CAD FILE NAME GOLDS.DWG OR GOLDS.DXF)

1 1 hr. UL L565 One layer 5/8" (15.9 mm) Fire-Shield C Gypsum Board attached
GA FC 4515 to 1/2" (12.7 mm) resilient furring channels screw fastened
perpendicular to lower chord of light gauge steel trusses
spaced a maximum 48" o.c. 23/32" (18.2 mm) plywood
plywood subfloor with 15/32" (11.9 mm) plywood finish floor.
Optional, mineral wool or glass fiber insulation draped over
furring channels.

Gypsum Board Floor/Ceilings – Steel Framing (steel joists with concrete floor) (CAD FILE NAME GOLDP.DWG OR GOLDP.DXF OR GOLDR.DWG OR GOLDR.DXF)
No. Fire Rating Ref. Design No. Description STC Test No. IIC
No Carpet Carpet & Pad

1 1 hr. OSU T-1936 5/8" (15.9 mm) Fire-Shield Gypsum Board 53 Based on 21 67
screw attached to furring channels spaced 24" o.c. NGC 4075 Based on Based on
(610 mm) attached to steel bar joists spaced 24" NGC 5121 NGC 5122
o.c. (610 mm). Concrete floor 2" (51 mm) thick.

2 hr. UL G503 5/8" (15.9 mm) Fire-Shield Gypsum Board or 53 (Direct) 21 67

5/8" (15.9 mm) Fire-Shield Kal-Kore plaster base Based on Based on Based on
screw attached to furring channels spaced 12" o.c. NGC 4075 NGC 5121 NGC 5122
(305 mm) attached to or suspended from steel bar
joists spaced 24" o.c. (610 mm). Concrete floor 57 (Susp.) 28 75
2 1/2" (63.5 mm) thick. Based on Based on Based on
NGC 4078 NGC 5126 NGC 5127

24 NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE

 GENERAL REFERENCE

Gypsum Board Floor/Ceilings – Steel Framing (steel joists with concrete floor) (CAD FILE NAME GOLDP.DWG OR GOLDP.DXF OR GOLDR.DWG OR GOLDR.DXF)

SELECTOR
QUICK
No. Fire Rating Ref. Design No. Description STC Test No. IIC
No Carpet Carpet & Pad

2 2 hr. UL G514 1/2" (12.7 mm) Fire-Shield C Gypsum Board or 53 (Direct) 21 67

GA FC 2030 1/2" (12.7 mm) Fire-Shield C Kal-Kore plaster base NGC 4075 NGC 5121 NGC 5122
screw attached to furring channels spaced 24" o.c.
(610 mm) attached or suspended from steel bar 57 (Susp.) 28 75
joists spaced 24" o.c. (610 mm) with wire ties spaced Based on Based on Based on
48" (1219 mm). Concrete floor 2 1/2" (63.5 mm) thick. NGC 4078 NGC 5126 NGC 5127

3 hr. UL G512 5/8" (15.9 mm) Fire-Shield C Gypsum Board screw 53 Based on
GA FC 3012 attached to furring channels spaced 24" o.c. (610 mm) NGC 4075
attached to steel bar joists spaced 24" o.c. (610 mm)
with wire ties. Concrete floor 2 1/2" (63.5 mm) thick.

3 1 hr. FM FC-134 1/2" (12.7 mm) Fire-Shield C Gypsum Board 52 Based on 21 67

GA FC 1105 applied across 3 5/8" (92.1 mm) steel studs 24" o.c. NGC 4075
(610 mm) with drywall screws 12" o.c. (305 mm).
Studs wire-tied 8' o.c. (2440 mm) to steel bar joists
spaced 24" o.c. (610 mm). 3/8" (9.5 mm) rib metal
lath supporting 2 1/2" (63.5 mm) thick concrete slab.

4 2 hr. UL G523 Single layer 1/2" (12.7 mm) Fire-Shield C Gypsum est. 50
Board or 1/2" (12.7 mm) Fire-Shield C Kal-Kore
plaster base screw applied perpendicular to cross tees
of a drywall suspension system that is suspended
from steel bar joists 24" o.c. (610 mm), 2 1/2"
(63.5 mm) concrete floor over 3/8" (9.5 mm) rib lath.

5 2 hr. UL D502 Single layer of 5/8" (15.9 mm) Fire-Shield C Gypsum est. 50
Board screw applied perpendicular to the cross
tees of a drywall suspension system suspended from
a steel deck. Concrete floor 2 1/2" (63.5 mm) thick.

6 2 hr. UL G222 Nominal 2' x 2' (610 mm x 610 mm) x 1/2" (12.7 mm)
FM FC-299 Fire-Shield G Gypsum Boards laid in fire-rated metal
GA FC- 2190 grid suspension system supported by hanger wire from
steel joists supporting 2 1/2" (63.5 mm) concrete.

UL G259 Nominal 2' x 4' (610 mm x 1219 mm) x 1/2" (12.7 mm)
1 1/2 hr. FM FC-300 Fire-Shield G Gypsum Boards laid in fire-rated metal
GA FC-1290 grid suspension system supported by hanger wire from
steel joists supporting 2 1/2" (63.5 mm) concrete.

NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE 25

QUICK SELECTOR FOR FIRE AND SOUND RATED SYSTEMS
Gypsum Board Roof/Ceilings – Light Gauge Steel Framing (pitched roof truss) (CAD FILE NAME GOLDP.DWG OR GOLDP.DXF OR GOLDR.DWG OR GOLDR.DXF)
No. Fire Rating Ref. Design No. Description STC Test No. IIC

1 1 hr. UL P540 One layer 5/8" (15.9 mm) Fire-Shield C Gypsum Board
GA RC-2501 attached to 1/2" (12.7 mm) resilient furring channels
screw fastened perpendicular to lower chord of light
gauge steel trusses spaced a maximum 48" o.c.
Roofing system UL Class A, B or C.

Optional, mineral wool or glass fiber insulation draped

over furring channels.

2 1 hr. UL P541 Two layers 5/8" (15.9 mm) Fire-Shield Gypsum Board
attached to 1/2" (12.7 mm) resilient furring channels
screw fastened perpendicular to lower chord of light
gauge steel trusses spaced a maximum 48" o.c.
Roofing system UL Class A, B or C.

Optional, mineral wool or glass fiber insulation draped

over furring channels.

3 2 hr. UL P543 Two layers 5/8" (15.9 mm) Fire-Shield C Gypsum Board
GA RC 2752 attached to 1/2" (12.7 mm) resilient furring channels
screw fastened perpendicular to lower chord of light
gauge steel trusses spaced a maximum 48" o.c.
Roofing system UL Class A, B or C.

Optional, mineral wool or glass fiber insulation draped

over furring channels.

Gypsum Board Roof/Ceilings – Steel Framing (steel joists) (CAD FILE NAME GOLDP.DWG OR GOLDP.DXF)
1 1 hr. FM RC-227 (12.7 mm) Fire-Shield C Gypsum Board est. 53
secured to 22 gauge steel deck with Lexsuco
clips and washers 24" o.c. (610 mm). Deck
supported by 10" (254 mm) bar joists 68" o.c.
(1727 mm). IRMA roof system with 1" (25.4 mm)
to 4" (102 mm) Styrofoam and 3 plies of 15 lb.
(6.8 kg) felt. Ceiling 1/2" (12.7 mm) Fire-Shield C
Gypsum Board on screw furring channels
24" o.c. (610 mm).
Gypsum Board Horizontal Shaftwall Duct Protection (CAD FILE NAME GOLDT.DWG OR GOLDT.DXF)
No. Fire Rating Ref. Design No. Description
1 2 hr. WHI 694-0300.1 2 1/2" (63.5 mm), 4" (102 mm) or 6" (152 mm), I-Studs
24" o.c. (610 mm). 1" (25.4 mm) Fire-Shield Shaftliner.
3 layers 1/2" (12.7 mm) Fire-Shield C Gypsum Board. Base
and middle layers parallel to studs. Face layer perpendicular.

For additional information

Phone 1-800-NATIONAL
®
(1-800-628-4662)

26 NATIONAL GYPSUM QUICK SELECTOR/GENERAL REFERENCE

12TH EDITION 06 16 43/NGC

Gold Bond BRAND

®

Gypsum Sheathing & e XP

2

Extended Exposure Sheathing

06 16 43

27
GOLD BOND® BRAND GYPSUM SHEATHING
DESCRIPTION TECHNICAL DATA

Gold Bond Brand Gypsum and as a component in SIZES AND TYPES

Sheathing is a water curtainwall systems and 1/2" x 4' x 8', 9', 10' (Jumbo) square edge.
resistant board product exterior insulation systems
designed for attachment to and finishes. 5/8" x 4' x 8', 9', 10' (Fire-Shield Jumbo) square edge.
the outside of exterior wall 3. As a sheathing for use in VAPOR PERMEABLE
framing as a water resistant fire-rated exterior wall Gypsum Sheathing typically has an average vapor permeance
underlayment for various assemblies. of 20 perms (dry cup method) which allows the escape of
exterior siding materials. normal interior created water vapor.
The sheathing is ADVANTAGES
manufactured with a 1. Economical: Both material SURFACE BURNING CHARACTERISTICS:
treated water resistant core and application costs are (FIRE HAZARD CLASSIFICATION)
faced with water repellent low. Gypsum Sheathing has a flame spread of 20 when tested under
paper on both face and 2. Fire Resistance: The non- ASTM E 84. Source: Factory Mutual Report No. 16738.102.
back surfaces and on both combustible gypsum core
long edges. Fire-Shield FIRE-RESISTANCE RATINGS
of the sheathing helps
(type X) Jumbo Sheathing protect framing elements A one-hour fire rating can be achieved for a wood framed wall
has special additives in the even when the siding or when constructed per UL Design U305 consisting of nominal
core to enhance its fire finish material is 2 x 4 wood studs 16” o.c. faced on the outside with 5/8" Fire-
resistive properties. combustible. Shield Gypsum Sheathing and on the inside with 5/8" Fire-
USES Shield Gypsum Board.
3. Weather Protection:
1. As a sheathing for wood Gypsum Sheathing’s A two-hour fire rating may be obtained per UL Design U371
framed residential moisture resistant core and with 2 x 4 wood studs 16" o.c. with two layers of 5/8" Fire-
construction to provide fire water repellent surfaces Shield Gypsum Board applied to the interior side and 5/8" Fire-
resistance, weather provide a barrier that Shield Gypsum Sheathing, faced with brick veneer on the
protection and to add to resists passage of wind and exterior side.
structural strength when water.** One and two hour fire ratings may be obtained for a steel framed
used under exterior finishes 4. Little or No Sawing: wall when constructed per UL Designs U 418 and U 425.
such as vinyl siding, Gypsum Sheathing can be STRUCTURAL
clapboard, paneling, scored and snapped to
masonry veneer, stucco Racking tests have been conducted for the Gypsum Association
exact size without cutting by an independent laboratory according to ASTM E 72.
and shingles. or sawing. Average ultimate racking load values were as follows:
2. As a sheathing for steel stud
commercial construction

SHEAR LOAD IN LBS. PER LINEAR FT. (KILOGRAMS PER METER)

Dry Wet*
1/2" x 4' (12.7 mm x 1219 mm) wide sheathing 540 (803) 332 (494)
5/8" x 4' (15.9 mm x 1219 mm) wide type X 654 (973) 522 (777)
*Treated core only
SQUARE EDGES FOR
VERTICAL APPLICATION Studs spaced 16" o.c., fasteners galvanized 11 gauge nails 7/16"
WAX-TREATED head, 1 1/2" long for 1/2" sheathing and 1 3/4" long for 5/8",
GYPSUM CORE 7" o.c. in the field and 4" o.c. on edges and ends for 5/8"
Gypsum Sheathing; 8" o.c. in field and 4" o.c. on edges and
ends for 1/2" Gypsum Sheathing.
Corner Bracing – Where continuous diagonal bracing is
required, many building codes allow the use of 4' wide
boards of 1/2" Gypsum Sheathing applied vertically to be used
WATER-REPELLENT in place of 1" by 4" wood let-in bracing.
PAPER SURFACE
Shear Walls – Where wind or seismic forces require shear walls
to resist these lateral forces, most building codes provide
allowable shear values for walls having gypsum sheathing
applied vertically to wood framing. Specific values with
construction requirements and limitations are contained in the
major model building codes (International Building Code,
JUMBO GYPSUM SHEATHING National Building Code, Standard Building Code and Uniform
Illustration colors for visualization purposes only. Building Code).
Shear values for all gypsum board, including Gypsum Sheathing,
are defined in GA-229 at www.gypsum.org/GA-229-08.pdf.
SPECIFICATION COMPLIANCE
Gold Bond Gypsum Sheathing is manufactured to comply with
ASTM Specification C 1396.

** Refer to Limitations, page 29, number 10.

28 NATIONAL GYPSUM SHEATHING
 06 16 43/NGC

LIMITATIONS 7. Gypsum Sheathing should SPECIFICATIONS

be spaced not less than
1/4" from abutting masonry
1. Gypsum Sheathing is not a to minimize wicking. SECTION 06 16 43
finished surface nor is it a GYPSUM SHEATHING
substrate for the direct 8. Neatly stack Gypsum
application of stucco, paint Sheathing flat, taking care THE FOLLOWING PARAGRAPHS ARE FOR INSERTION INTO SECTIONS OF
or textures. Placement of to prevent sagging or GENERIC SPECIFICATIONS OR GENERIC/PROPRIETARY SPECIFICATIONS
damage to the ends, edges COVERING GYPSUM BOARD PRODUCTS. THE GOLD BOND PRODUCT

06 16 43
vapor retarders is the
responsibility of the design and surfaces. NAME FOLLOWS THE GENERIC DESCRIPTION IN PARENTHESES.
professional. 9. Gypsum Sheathing may be PART 2 PRODUCTS
2. The sheathing shall not be stored outside for up to one 2.01 MATERIALS
used as a nailing base. month if stacked off the
ground under protective A. Gypsum Sheathing Board: A gypsum core sheathing boards
3. Exterior Insulation Finish with additives to enhance the water resistance of the core;
covering. surfaced with water repellent paper on front, back, and long
Systems (EIFS): Exterior
Insulation Finish Systems 10. Gypsum Sheathing is edges; and complying with ASTM C 1396.
incorporating Gypsum designed for use as a 1. Regular Board, 1/2" x 4' x 8', 9', 10' with square edge
Sheathing should be used substrate that is covered by (Gold Bond BRAND Jumbo Gypsum Sheathing).
with mechanical fasteners. an exterior cladding or
other weather resistive 2. Fire-Resistant Board (type X), 5/8" x 4' x 8', 9', 10' with
The performance of additives in the core to enhance fire resistance
these systems and barrier and is not intended (Gold Bond BRAND Fire-Shield Jumbo Gypsum Sheathing).
recommendation of the for long term exposure.
After it has been installed, PART 3 EXECUTION
proper method of
attachment are the sole it shall not be exposed to 3.01 INSTALLATION
responsibility of the EIFS the elements for more than A. Gypsum Sheathing: In accordance with ASTM C 1280 and
manufacturer. 30 days. The gypsum the manufacturer’s recommendations, National Gypsum
sheathing shall be covered Company “Gypsum Construction Guide.”
4. Application of Gypsum with building felt or
Sheathing to framing by equivalent within 30 days
adhesive only is not after installation if exposure
recommended. time will be more than 30 RECOMMENDATIONS
5. Stud spacing must not days.
exceed 24" o.c. 11. Gypsum Sheathing Fasteners (nail or screw heads or the crown of staples) shall bear
6. Gypsum Sheathing is not applied perpendicular to tightly against the face of the sheathing but should not cut into
recommended for framing shall be covered the face paper. Staples shall be driven with the crown parallel
application to exterior with building felt or to the framing. Fasteners shall be no less than 3/8" from the
ceilings, soffits or sills. equivalent or the edges and ends of the sheathing. When shear values are not
horizontal joints shall be required, fasteners shall be spaced not more than 8" o.c.
sealed at time of along the vertical ends or edges and intermediate supports.
application.
JUMBO GYPSUM SHEATHING – 4' WIDE
DETAILS Apply Jumbo Gypsum Sheathing vertically with vertical edges
butting over the center of framing members. Fit sheathing
snugly around all openings. Vertically attach sheathing with
GYPSUM SHEATHING GYPSUM SHEATHING nails or screws spaced not over 4" o.c. around perimeter and
8" o.c. to intermediate studs (space staples not over 3" and 6"
o.c. respectively). Jumbo Gypsum Sheathing is permitted to be
applied horizontally. Secure horizontally applied sheathing to
studs with nails or screws spaced not over 4" o.c. along ends
and 8" o.c. to intermediate framing. Square edge gypsum
sheathing applied perpendicular to framing shall be covered
with building felt or equivalent or horizontal joints shall be
sealed at time of application. Horizontal gypsum sheathing
joints do not require back blocking.
TOTAL WALL THICKNESS
Door and window frames for outside wall openings should be
ordered according to total wall thickness. For ease of
installation it is recommended that window frames be
selected with blind stops the same thickness as the sheathing.
WINDOW HEAD WINDOW HEAD REVERSIBLE STOPS
JAMB-REVERSIBLE STOP JAMB-3/4" BLIND STOP Window frames with reversible stops can accommodate
06115A 06115B
Scale: 3" = 1'-0"
1/2" sheathing. Detail 06115 A.
Scale: 3" = 1'-0"
3/4" BLIND STOPS
For use of fixed 3/4" blind stops with 1/2" sheathing, insert
1/4" shim between sheathing and trim. Detail 06115 B.

NATIONAL GYPSUM SHEATHING 29

 3.4 LB. SELF-FURRING
DIAMOND MESH
METAL LATH BUILDING
INSTALLATION BUILDING FELT
OR FELT OR
EQUIVALENT EQUIVALENT
SHEATHING SHEATHING OR PAPER-
BACKED
METAL LATH

2" X 4" 2" X 4"

FRAMING FRAMING
16" O.C. 16" O.C.

STUCCO

FLASHING

VINYL, WOOD, CLAPBOARD SIDING STUCCO

Apply horizontal siding directly over the sheathing. Fasteners Nail 3.4 lb. Self-furring Galvanized Diamond Mesh metal lath
should have a 1" penetration into each framing member. through the sheathing into the framing.
Butt siding joints over framing members.
BUILDING
FELT OR
SHEATHING BUILDING SHEATHING EQUIVALENT
FELT OR
EQUIVALENT

WALL TIE
2" X 4" 2" X 4"
FRAMING FRAMING FURRING STRIP
16" O.C. 16" O.C.
BRICK
VENEER

FLASHING SHINGLES

BRICK VENEER SHINGLES OR SHAKES

Wall ties for masonry veneer should be nailed through the Apply 1 x 2 wood furring strips horizontally over the Gypsum
sheathing with nails that penetrate a minimum of 1" into the Sheathing, spaced to correspond to the shingle exposure,
framing. Leave an air space of 2" between sheathing and using nails of sufficient length to provide at least 1"
veneer.* penetration into the studs. Nail furring through the sheathing
into the framing with a minimum of one nail at each
intersection of stud and furring.

*Brick Institute of America

Note: Refer to exterior cladding manufacturer and local codes to

determine if a weather resistive barrier is required over
gypsum sheathing.

30 NATIONAL GYPSUM SHEATHING

GOLD BOND® BRAND 06 16 43/NGC

e2XP™ EXTENDED EXPOSURE SHEATHING

ADVANTAGES MOLD AND MILDEW compound, stucco, paint
DESCRIPTION RESISTANCE or textures in wall
• Manufactured to meet
e2XP Sheathing is a moisture ASTM C 1177 (“Standard e2XP Sheathing was designed applications.
Specification for Glass Mat to provide extra protection • All materials in
and mold resistant against mold and mildew
sheathing panel designed Gypsum Substrate for Use conjunction with e2XP

06 16 43
as Sheathing”). compared to standard
for attachment to the gypsum board products. Sheathing should be
outside of sidewall and • Will withstand up to 12 installed per the
months of exposure to When tested by an
soffit framing as a water independent lab per ASTM manufacturer’s
resistant underlayment for typical weather conditions,
subject to terms, conditions D 3273 (“Standard Test recommendations.
various exterior materials. Method for Resistance to
e2XP Sheathing is and exclusions of National
Growth of Mold on the
• e2XP Sheathing should
manufactured with an Gypsum’s Limited never be used as a nailing
Warranties. Surface of Interior Coatings
enhanced moisture and in an Environmental base. Mechanical fasteners
mold resistant core and • Treated fiberglass face, Chamber”), e2XP should pass through the
facer. The facer is back and gypsum core Sheathing achieved a score sheathing and engage the
composed of a coated provides extra protection of 10, the best possible framing member behind
fiberglass mat which against mold growth per score for this test. No
provides superior weather the panel.
ASTM D3273. material can be considered
resistance capabilities. It is • Superior water resistance “mold proof,” nor is it • e2XP Sheathing is resistant
produced in 1/2" and 5/8" which does not impede certain that any material to weather, but it is not
thicknesses, 4' wide in 8', vapor transmission. will resist mold or mildew intended for immersion in
9' and 10' lengths. e2XP indefinitely. When used in water and should not be
Sheathing is lightweight, • Dimensionally stable under
changes in temperature conjunction with good subjected to cascading
scores and cuts easily and design, handling and
is specially coated on the and relative humidity and water conditions.
construction practices,
front, back and sides for resists warping, rippling,
e2XP Sheathing can • Do not apply e2XP
easy handling. buckling and sagging for a Sheathing below grade.
flat and even substrate. provide increased mold
resistance versus standard Always follow building
• Noncombustible material. gypsum board products. code grade clearance
BASIC USES
• Approved for inclusion in As with any building requirements.
e2XP Sheathing can be used material, avoiding water
in both wood and metal
specific UL fire-rated
designs. exposure during handling,
• e2XP Sheathing should be
stud construction to storage and installation, protected from the
provide fire resistance, • Can be scored and elements and maintained
snapped to exact size and after installation is
weather protection and to complete, is the best way in reasonable condition
add to structural strength. without cutting or sawing. prior to installation.
to avoid the formation of
e2XP Sheathing can be • Coated face and back for mold or mildew. Boards should be stacked
used as a substrate for easy handling.
various air and water flat with care taken to
resistive barriers including
• Ideally suited for soffit LIMITATIONS prevent sagging or damage
applications. to edges, ends or surfaces.
building wraps, self-
adhesive membranes and • Suitable for radius
applications.
• e2XP Sheathing is not a Following installation, the
liquid applied coatings. It finished surface nor is it a structure must be
can be used as a substrate for the direct
component in curtainwall application of joint
or Exterior Insulated Finish
Systems (EIFS), and under
various exterior finishes Enhanced
such as metal, vinyl, wood Coated Fiberglass Mat Moisture and
or fiber-cement siding; Mold Resistant
brick/stone veneer, or Gypsum Core
conventional stucco. The
5/8" e2XP Fire-Shield®
Type X gypsum panel can
be utilized for exterior fire-
rated wall and soffit
assemblies.

Coated Fiberglass Mat

NATIONAL GYPSUM SHEATHING 31

 JOINT TREATMENT
adequately maintained by
the contractor and/or
TECHNICAL DATA e2XP Sheathing is compatible
building owner. with a variety of exterior
PHYSICAL PROPERTIES 1/2" e2XP 5/8" e2XP systems. For applications
• Do not laminate e2XP requiring joint treatment,
Nominal Width 4' 4'
Sheathing to masonry joint finishes must be
surfaces, fasten to furring Standard Lengths 8', 9', 10' ± 1/4" 8', 9', 10' ± 1/4"
compatible with the exterior
strips or framing. Nominal Weight, lbs./msf 1,900 1,900 system specified. Consult
• e2XP Sheathing is not Bending Radius 6'1 6'1 your weather/water resistant
intended for tile Composition Coated fiberglass mat/gypsum core barrier manufacturer,
applications. For tile cladding manufacturer or
Racking strength,2 lbs/f.(dry) >540 >654
applications, PermaBase local building code
(Ultimate - not design value)
Cement Board is authority to determine the
recommended. Flexural Strength,3 parallel, lbs. 804 1004 appropriate joint treatments.
(4' weak direction)
• e2XP Sheathing is not a Compressive Strength Min. 500 psi Min. 500 psi.
replacement for structurally DECORATION
engineered sheathings Humidified Deflection,3 inches 1/8" 1/8"5
required for racking 6 2
Permeance (perms) [ng/Pa•s•m ] 22 [1260] 19 [1090]
qualities, and should not be “R” Value7 .043 .050 Soffit and Ceiling applications
used in lieu of plywood only
when required. Combustibility Noncombustible Noncombustible
Embed 2" wide fiberglass mesh
• e2XP Sheathing application Flame Spread, E84 5 5
tape in ProForm® BRAND Sta-
to framing by adhesive only Coefficient of Thermal Expansion9 9.26 x 10-6 9.26 x 10-6 Smooth® Setting Compound or
is not recommended. in/in/˚F equivalent, over all joints.
• Stud spacing must not Resists Growth of Mold10 Yes Yes Once dry, apply a skim coat of
exceed 24" o.c. Sta-Smooth Setting Compound
Handling Characteristic Yes Yes or equivalent, over the panels
• All design details such as Fasteners Standard Standard
fasteners, sealants and to achieve a uniform, smooth
control joints, per system finish over the entire area.
1. Double fasteners on ends as needed. Prime with exterior grade
specifications, must be 2. Tested in accordance with ASTM E 72
properly installed. primer and finish with two
3. Tested in accordance with ASTM C 473 coats of exterior grade paint.
Openings and penetrations 4. Minimum requirements for ASTM C 1177
must be properly flashed 5. Maximum requirements for ASTM C 1396 and ASTM C 1177
and sealed according to 6. Tested in accordance with ASTM E 96 (dry cup method)
code, building design and 7. Tested in accordance with ASTM C 518 (heat flow meter)
weather resistive barrier 8. As defined and tested in accordance with ASTM E 136
manufacturer’s instructions. 9. Tested in accordance with ASTM E 228
Failure to do so will void 10. Tested in accordance with ASTM D 3273
the warranty .
(See e2XP Sheathing
Warranty for terms, APPLICABLE STANDARDS orientation for specific fire
conditions and limitations.) ASTM Specification C 1177 and assemblies and shear wall
application sections of C 1396. applications as required by
COMPOSITION & MATERIALS the design.
e2XP Sheathing is FIRE RESISTANCE RATINGS • Framing members shall not
manufactured with a The 5/8" e2XP Fire-Shield vary more than 1/8" from the
moisture and mold resistant Sheathing is tested in plane of the faces of adjacent
core and facer. The facer is accordance with ASTM framing.
composed of a coated Standard E 119 and is • Fasteners should be driven
fiberglass mat which classified as Type X for use flush with the panel surface (not
provides superior weather in UL Listings. countersunk) and into the
resistant capabilities. e2XP framing. Locate fasteners at e2XP™ Sheathing
Fire-Shield® Exterior
Sheathing (Type X) has INSTALLATION least 3/8" from the ends and was introduced in March
edges of the sheathing. For 2008 on a regional basis
special additives in the core wood studs: Nails should be
to enhance its fire-resistive APPLICABLE STANDARDS beginning in the
AND REFERENCES galvanized, 11 gauge, 7/16" Southeastern United States.
properties. head, 1-3/4" long. Screws For additional product and
e2XP Sheathing contains no ASTM C 1280 should be 1-1/4" bugle head, availability information
asbestos. GYPSUM Association GA-253 corrosion resistant Type W for go to:
SIZES AND TYPES wood and Type S for steel. Use
RECOMMENDATIONS appropriate fasteners for WWW.PURPLECHOICE.INFO.
Fire-Shield: attaching e2XP Sheathing to
1. Width: 4' (1219 mm) • e2XP Sheathing must be framing.
2. Lengths: 8', 9' and 10' installed in accordance with • Install e2XP Sheathing with
(2438 mm, Gypsum Association with end joints staggered on
2743 mm, and document GA-253, ASTM C horizontal applications.
3048 mm) 1280 or National Gypsum Ends and edges of the
3. Thickness: 1/2" Regular Co. Gypsum Construction sheathing should fit snugly.
(12.7 mm) Guide. • The location of control
®
5/8" Fire-Shield • e2XP Sheathing can be joints shall be as required For additional information
(15.9 mm) attached parallel or
4. Edges: Square by either the building design
perpendicular to wood or or the manufacture of the Phone 1-800-NATIONAL
metal framing. Use specified exterior material. (1-800-628-4662)
appropriate board

32 NATIONAL GYPSUM SHEATHING

12TH EDITION 09 23 00/NGC

Conventional Plaster
Systems

09 23 00

33
Kal-Kore BRAND Plaster Base Conventional Plaster Accessories*
DESCRIPTION NO. 15 DOUBLE V
EXPANSION JOINT
Kal-Kore BRAND Plaster Base panels consist of a fire resistive Minimizes cracking in large
gypsum core encased in blue absorptive face paper and liner plaster areas. Also provides
paper on the back side. Although specifically designed as a ground to ensure proper
base for veneer plaster, it also provides an excellent base for plaster thickness.
conventional basecoat plasters such as Gypsolite or Two-Way
Hardwall.
TECHNICAL DATA

KAL-KORE PLASTER BASE NO. 66 EXPANDED FLANGE

SQUARE CASING
Kal-Kore is available in two
basic types: Regular and Has short, 90 degree return at
Fire-Shield type X. Kal-Kore plaster surface, serving as a
is 4' wide and is supplied plastering stop.
in 8' through 16' lengths.
Thicknesses are as follows:
Regular – 3/8" and 1/2".
Fire-Shield – 1/2" Fire-Shield C,
5/8" Fire-Shield, 5/8" Fire-
Shield C, produced to
meet ASTM C 1396. NO. 1 EXPANDED
CORNERBEAD
Note: Installation of gypsum lath and metal lath shall be in The 2 1/2" expanded flange
accordance with ASTM C 841. Do not use 3/8" Kal-Kore ends 1/4" from the nose
plaster base with conventional basecoat plasters. of the bead providing
reinforcement where
needed most.

Metal Lath*
DIAMOND MESH LATH
COLD ROLLED STEEL
Used as a plaster base and CHANNEL
reinforcement on almost all types
of walls and ceilings, over wood Used as studs for attaching
or steel framing, flat or curved metal lath in 2" solid
surfaces. Diamonds are 5/16" wide. partitions. For furring or
runners in suspended
ceilings.

SELF-FURRING DIAMOND MESH LATH

Used extensively in stucco work, as a
plaster reinforcement over interior
masonry walls, and in steel column
fireproofing. The self-furring dimples BEAM FURRING CLIP
hold the metal lath 1/4" away from Used to attach lath to flanges
the surface to be plastered. of steel beams, joists and
columns. Tempered spring
steel.
1/8" FLAT RIB LATH
Designed to meet the demand for rigid
expanded metal lath used as a
plaster base in all types of work.
Widely used as reinforcement for
basecoat in ceramic tile work.
Sheets are reversible.
L RUNNER
Perforated – Ceiling or floor
3/8" RIB LATH support for 2" solid lath
The 3/8" rib lath is used for ceilings and plaster partition.
under steel joist construction and Plain – Ceiling support for 2"
metal reinforced concrete floors. It is solid board partition using
also recommended for concrete slab 1" shaftliner.
floors over steel joists.

*Metal products are not manufactured by

34 NATIONAL GYPSUM CONVENTIONAL PLASTER SYSTEMS National Gypsum Company.
 09 23 00/NGC
Basecoat Plasters
DESCRIPTION DESCRIPTION

GOLD BOND BRAND TWO-WAY HARDWALL GYPSUM PLASTER GOLD BOND BRAND GYPSOLITE PLASTER

Gold Bond BRAND Two-Way Strength Gold Bond BRAND Gypsolite LIMITATIONS
Hardwall Plaster is a Two-Way Hardwall Plaster is a lightweight gypsum When used over metal lath, a
basecoat plaster which properly proportioned with basecoat plaster mixed at sand float finish should be
requires the job site aggregate forms a hard, the mill with correctly sized specified. A smooth-trowel
addition of an aggregate durable base for the finish and proportioned perlite finish is not recommended
and water to provide coat. Its high tensile and aggregate, requiring only since the combination of a
working qualities and is compressive strength results the addition of water on the relatively soft (perlite
designed for interior use in increased resistance to job. It is manufactured to aggregated) basecoat and a
over all accepted plaster minor structural be trowel-applied over hard (smooth-trowel
bases. It may be applied by movements, impacts and gypsum or metal lath. lime/gauging) finish has the
hand or used through abrasions. ADVANTAGES potential for cracking and
pump/spray plastering

09 23 00
Fire Resistance spalling of the finish coat.
machines. Uniform Strength and
Two-Way Hardwall Plaster is Hardness Fire Resistance
ADVANTAGES Gypsolite has excellent fire-
essentially mineral in Uniformity is ensured through
Controlled Uniformity composition and will not exact proportioning and resistive qualities and
Two-Way Hardwall Plaster is support combustion. thorough mixing of graded generally provides fire
set-stabilized and adjusted Specification Reference perlite and gypsum plaster ratings higher than sanded
for market requirements at the mill. Gypsolite plaster.
and seasonal changes. ASTM Designation C 28,
“Gypsum Plasters”. provides a uniform base for Specification Reference
When mixed with sand or the finish coat.
other aggregate it has Bag Weight ASTM Designation C 28 for
uniform working qualities Lightweight “Gypsum Plasters”.
100 lbs. (45.4 kg)
and excellent spread. Gypsolite weighs less than Bag Weight
half as much as sanded 80 lbs. (36.3 kg)
gypsum plaster, thus
reducing the dead-load on 25 lbs. (11 kg)
TECHNICAL DATA framing. Water Ratio
High Insulating Value 1.2 gallons of water per 25
AGGREGATE PROPORTION AND ESTIMATED COVERAGE Gypsolite has a “k” factor of lbs. of plaster.
1.5 which provides about
Coverage, Thick- 3 1/2 times the insulating
Aggregate Sq. Yds. Sq. Ft. ness value of sanded plaster.
Pro- per Ton (Sq. M.) In.
portions Plaster Base (Sq. M./Metric Ton) per Bag (mm)
TECHNICAL DATA
Sanded Gypsum Lath 175-220 80-100 7/16"
1:2-1/2 (161-203) (7-9) (11.1)
Sanded Metal Lath 90-125 40-55 9/16"* GYPSOLITE ESTIMATED COVERAGE
1:2-1/2 (83-115) (4-5) (14.3)* Coverage,
Sanded Brick & Clay Tile 175-220 80-100 9/16" Sq. Yds. Sq. Ft. Thickness
1:3 Concrete Block (161-203) (7-9) (14.3) per Ton (Sq. M.) In.
Plaster Base (Sq. M/Metric Ton) per Bag (mm)
*Measured from face of lath.
NOTE: Sanded 1:2-1/2 means 1 part plaster to 2-1/2 parts sand by weight. Gypsum Lath 140-155 50-55 7/16"
(129-143) (4-5) (11.1)

Metal Lath 65-80 25-30 9/16"*

(60-74) (2-3) (14.3)*
WEIGHT COMPARISON OF BASECOAT PLASTERS
Sanded Gypsolite *Measured from face of lath.
Dry Set Mortar Weight 1.3 Regular
Weight lbs. per cu. ft.(kg/m3) 120 (1922) 50 (801)
Lbs./yd. (kg/m ) 3/8"(9.5 mm) thick
2 2
34 (18) 14 (8)
Lbs./yd.2(kg/m2) 1/2"(12.7 mm) thick 45 (24) 19 (10)
Lbs./yd.2(kg/m2) 5/8"(15.9 mm) thick 56 (30) 24 (13)
Lbs./yd.2(kg/m2) 3/4"(19.0 mm) thick 67 (36) 29 (16)
Wet Mortar Weight
Weight lbs. per cu. ft. (kg/m3) 140 (2243) 69 (1105)

NATIONAL GYPSUM CONVENTIONAL PLASTER SYSTEMS 35

PHYSICAL PROPERTIES OF BASECOAT PLASTERS (TYPICAL TEST RESULTS PER ASTM C 472)
Two-Way Hardwall
Plaster Gypsolite Gypsum Plaster to Gypsum Plaster Gypsum Plaster
Properties Regular Sand by Weight and Vermiculite and Perlite
Regular Masonry Regular Masonry
Mix Mill Mix 1:1 1:2 1:3 100 lbs. (45.4 kg) 100 lbs. (45.4 kg) 100 lbs. (45.4 kg) 100 lbs.(45.4 kg)
2 cu. ft. (.06 m )
3
3 cu. ft. (.08 m )
3
2 cu. ft. (.06 m ) 3 cu. ft. (.08 m )
3 3

Approximate Compressive 900 1600 1150 750 500 300 900 650
Strength lbs. per sq. in. (kPa) (6201) (11024) (7923) (5168) (3445) (2067) (6201) (4479)
Approximate Tensile 160 250 190 120 130 90 160 100
Strength lbs. per sq. in. (kPa) (1102) (1722) (1309) (827) (896) (620) (1102) (689)

Finish Plasters
DESCRIPTION

GOLD BOND BRAND GOLD BOND BRAND

GYPSUM GAUGING PLASTER (SUPER-WHITE) GYPSUM MOULDING PLASTER (SUPER-WHITE)
Gold Bond BRAND Gauging Plaster, quick set or slow set type, is Gold Bond BRAND Moulding Plaster is a very white, finely ground
designed for use with finish lime. It is specially ground, gypsum, primarily used for all kinds of ornamental plaster work.
calcined gypsum, which readily mixes with water and lime Because of its low expansion, excellent strength and hardness,
putty. Proper proportioning is essential, since gauging adds it is specially adaptable for casting in rubber, gelatin and other
strength and hardness to the finish surface by reinforcing the types of moulds. For casting purposes, only water is added. For
plastic non-setting lime against shrinkage and cracking. A run-in-place ornamental work, such as cornices, the moulding
finish coat of gypsum gauging plaster and finish lime, job plaster is used with lime putty, mixed 2 parts lime to 1 part
mixed 2 parts hydrated lime to 1 part plaster by weight, is moulding plaster by weight.
designed primarily for interior smooth trowel application over Complies with ASTM Designation C 59.
a gypsum plaster basecoat. Smooth finish plasters should be
applied at a thickness of not more than 1/16". Texture finishes Bag Weight
should be applied at a thickness of not more than 1/8". 100 lbs. (45.4 kg) (50 lbs. (22.7 kg) available in limited areas)
Complies with ASTM Designation C 28. Note: Application of plaster shall be in accordance with ASTM C 842.
Bag Weight Water Ratio
Quick Set – 100 lbs. (45.4 kg) (50 lb. (22.7 kg) bags available in 6.5 gallons of water per 100 lb. bag.
limited areas)
Slow Set – 100 lbs. (45.4 kg) (50 lb. (22.7 kg) bags available in MILL-MIXED FINISH PLASTERS
limited areas)
For a mill-mixed finish plaster, use Kal-Kote Smooth Finish,
Kal-Kote Texture Finish Plaster, Uni-Kal or X-KALibur
TECHNICAL DATA Extended Set Veneer Plaster. Requires the addition of water
only. See page 46.
GYPSUM GAUGING PLASTER
GYPSUM MOULDING PLASTER
Method of Application Coverage*
Trowel Finish 1000-1400 sq. yds./Ton (921-1290 m2/Metric Ton) Method of Application Coverage*
225-315 sq. ft./bag (21-29 m2/Bag) Trowel Finish 1000-1400 sq. yds./Ton (921-1290 m2/Metric Ton)
*With the addition of two tons of hydrated lime. 225-315 sq. ft./bag. (21-29 m2/Bag)
*With the addition of two tons of hydrated lime.
MILL-MIXED FINISH PLASTERS*
PAINTING PLASTER
Method of Various job conditions such as suction differences, wet or only
Product Application Coverage* partially dry walls, and reactions between paint and lime have
Kal-Kote Smooth Finish Trowel 650-750 sq. yds./Ton caused unsatisfactory paint finishes, particularly on new
(598-645 m2/Metric Ton) construction.
Kal-Kote Texture Finish Trowel 650-750 sq. yds./Ton Alkali-resistant primers specifically formulated for use over new
(598-645 m2/Metric Ton) plaster will permit decorating with oil or latex type paints.
Quality paint products should be used and manufacturers’
Uni-Kal recommendations followed. Finished plaster should be
and X-KALibur Trowel 600-665 sq. yds./Ton painted or covered to conceal possible discoloration. The
(553-613 m2/Metric Ton) paint system should be suitable for use over plaster surfaces
*See page 46 for additional information. that contain lime, which has a high pH of 10-13.
It is essential that plaster be sound and completely dry before
painting. Conventional plaster may require 30 to 60 days to
fully dry.

36 NATIONAL GYPSUM CONVENTIONAL PLASTER SYSTEMS

 09 23 00/NGC
Gypsum Plaster Base/Wood Framing 2" Solid-Metal Lath
Channel Stud
DESCRIPTION
DESCRIPTION
ATTACHMENT OF GYPSUM PLASTER BASE TO HORIZONTAL Strength
AND VERTICAL WOOD SUPPORTS
This partition with C.R. The completed partition is a
Note: Application of Gypsum Gypsum Plaser Base shall be channel as studs gives fire monolithic slab of gypsum
Plaster Base shall be in applied face side out and protection, stability and plaster thoroughly
accordance with ASTM C attached to wood framing sound insulation while reinforced with expanded
841. with nails or staples. occupying a minimum metal lath and securely
Apply all Gypum Plaster Base Control joints should be amount of floor and anchored to floor and
with long dimensions at installed in ceilings without building space. The system ceiling. It is highly resistant
right angles to the wood perimeter relief with a consists of three metal units to tension, impact, shear
studs or supports. End joints maximum distance (channel stud, metal lath, and vibration.
shall occur on different between such joints of 30' L runners) which are used Adaptability
supports in different with a maximum undivided together with Diamond
courses and shall not be area of 900 sq. ft. With Partitions will accommodate
Metal Lath and Gypsum door bucks of various
nearer than one full stud perimeter relief, maximum Plaster. These components

09 23 00
space from edges of distance is 50' with types, casings, switch boxes
form a space-saving, strong, and electrical outlets; also
openings in walls or maximum undivided area non-load-bearing partition
partitions. of 2500 sq. ft. On side walls support lightweight fixtures
for use in interior wall such as kitchen cabinets.
control joints should be construction.
TECHNICAL DATA installed every 30'. LIMITATIONS
ADVANTAGES
Refer to table of Permissible
Space Saving Partition Heights on
MAXIMUM SPACING OF PLASTER BASE
Occupies less than half the page 38.
Thickness Distance Number of Approximate space of conventional
of Plaster Between Attachments Spacing c to c wood-stud or masonry
Base Supports per Bearing of Attachments constructed partitions.
3/8" 16" 4 5" Cost Saving
(9.5 mm) (406 mm) (127 mm) Simple erection cuts labor
1/2" 24" 4 5" costs. One mechanic can
(12.7 mm) (609 mm) (127 mm) quickly erect the channel
studs and tie on Diamond
NAILS AND STAPLES* MINIMUM GAUGE REQUIREMENTS Mesh Metal Lath.
Fire Protection
Diameter of
Flat Head or Composed of gypsum plaster
Blued Nails Gauge of and steel, it makes an
Thickness Length Depth of or Crown Shank of excellent fire barrier.
Attach- of Plaster of Support Width of Nails or Official tests give the
partition a one- to two-hour L RUNNER AT CEILING
ments Base Leg Penetration Staples* Staples*
fire rating.
Nails 3/8" 1 1/8" 3/4" 19/64" 13
(9.5 mm) (28.6 mm) (19.0 mm) (7.5 mm) Sound Insulation
Partition is an effective sound
Staples* 1" 5/8" 7/16" 16 barrier and has a Sound
(25.4 mm) (15.9 mm) (11.1 mm) Transmission Class of 37
Nails 1/2" 1 1/4" 3/4" 19/64" 13 for 2" thick with sand, 33
(12.7 mm) (31.8 mm) (19.0 mm) (7.5 mm) for 2 1/2" thick with perlite
aggregate.
Staples* 1 1/8" 5/8" 7/16" 16
(28.6 mm) (15.9 mm) (11.1 mm)
*Galvanized staples.
L RUNNER AT FLOOR
2" SOLID-METAL LATH
CHANNEL STUD SYSTEM
Gypsum Finish Plaster

Sanded Gypsum Plaster

Metal Lath

66 CASING BEAD

L Runner

CR Channel Stud

NATIONAL GYPSUM CONVENTIONAL PLASTER SYSTEMS 37

 TECHNICAL DATA

SPACING OF VERTICAL SUPPORTS FOR ATTACHMENT PERMISSIBLE PARTITION HEIGHTS (BASED ON L/240)
Maximum Maximum Face-to-Face Size and Weight
Spacing Weight Lbs. per Unsupported Plaster of Channels
Type of Lath of Supports Sq. Yd. (kg/m2) Height Thickness (per 1000') (305 m)
Diamond 16" (406 mm) 2.5 (0.6 kg) 12' (3658 mm) 2" (51 mm) 3/4" (19.0 mm) 300 lbs. (136 kg)
Mesh Lath 16" (406 mm) 3.4 (1.9 kg) 14' (4267 mm) 2 1/4" (57.2 mm) 3/4" (19.0 mm) 300 lbs. (136 kg)
16' (4877 mm) 2 1/2" (63.5 mm) 3/4" (19.0 mm) 300 lbs. (136 kg)
Flat Rib Lath 16" (406 mm) 2.75 (1.5 kg) 18' (5486 mm) 2 3/4" (69.9 mm) 1 1/2" (38.1 mm) 475 lbs. (215 kg)
24"* (610 mm) 3.4 (1.9 kg)
3/8" (9.5 mm) 24"* (610 mm) 3.4 (1.9 kg)
Rib Lath
*This spacing permissible for solid partitions not exceeding 16' (4877 mm)
in height.

DETAILS

GYPSUM
3/4" C.R. CHANNEL STUD PLASTER CEILING L RUNNER
3/4" C.R. CHANNEL STUD CORNERBEAD LINE
CAULK

5/8" 66 1/2" 66
TIE WIRE CASING BEAD CASING
BEAD

MASKING
TAPE
TIE WIRE
METAL LATH L RUNNER
MASKING
METAL LATH TAPE
METAL LATH
L RUNNER GYPSUM PLASTER

2" 3/4" C.R. CHANNEL STUD GYPSUM

PLASTER
CORNER DETAIL
09210B
Scale: 3" = 1'-0" 2"
2"

INTERSECTING PARTITION CEILING DETAIL

2"
09210A 09210C
Scale: 3" = 1'-0" Scale: 3" = 1'-0"

3/4" C.R. CHANNEL STUD

STRUT TO
STRAP ANCHOR CEILING
GYPSUM
L RUNNER DOOR PLASTER

GYPSUM METAL LATH

PLASTER

TIE WIRE
FLOOR LINE
L RUNNER

METAL LATH BACK-TO-BACK

3/4" C.R. CHANNEL STUDS

METAL DOOR FRAME BASE DETAIL

09210D 09210E
Scale: 3" = 1'-0" Scale: 3" = 1'-0"

38 NATIONAL GYPSUM CONVENTIONAL PLASTER SYSTEMS

 09 23 00/NGC
Fireproofing Columns and Beams
with Metal Lath
DESCRIPTION DETAILS

Gypsum plaster, mixed with sand or lightweight aggregate, is CONCRETE

CELLULAR STEEL FLOOR
applied over a metal lath base providing an economical fire
protective covering for structural steel columns.
ADVANTAGES
2 1/2"
Lightweight
This system of fireproofing weighs only half as much as tile and
one quarter as much as standard concrete for equivalent fire 3 1/8"
resistive ratings. This means a reduction of up to 1/3 in dead-
load weight, reducing the size and cost of footings,
foundations and structural framing.
BEAM FURRING CLIPS
Fire Resistance PLASTER

09 23 00
Fire resistance ratings up to four hours can be obtained.
Economy 3.4 LB. DIAMOND MESH
METAL LATH
Lath is low in cost, quick and easy to apply, thereby effecting
savings in material and labor costs.
METAL LATH BEAM
LIMITATIONS 1 1/2"

In warehouses or other occupancies where columns might be

damaged, angle iron guards are recommended to protect GYPSUM PERLITE PLASTER 1 1/2"
column corners to the necessary height.

BEAM-3 HOUR
09210J
Scale: 1 1/2" = 1'-0"

MIN. THICKNESS

2 HOUR - 1"
3 HOUR - 1 3/8"
4 HOUR - 1 3/4"

TIE WIRE

3.4 LB.
DIAMOND MESH
METAL LATH

STEEL COLUMN

STEEL CORNERBEAD
GYPSUM PERLITE
PLASTER

COLUMN - UL X402
09210J1
Scale: 1 1/2" = 1'- 0"

NATIONAL GYPSUM CONVENTIONAL PLASTER SYSTEMS 39

Suspended Metal Lath Ceilings
DESCRIPTION

Metal lath suspensions are should be installed around

commonly made below the periphery.
virtually all types of Metal Lath is frequently used
construction for fire-rated for furred as well as
and non fire-rated plaster suspended ceilings.
ceilings. Framing of 1 1/2"
C.R. channels are spaced Metal lath is used for furring
up to 4' o.c. perpendicular from wood, concrete and
to joists and are cross- steel joists.
furred with 3/4" C.R. RECOMMENDATIONS
channels spaced according 1. Control joints should be
to specifications for types installed in ceilings without
and weight of metal lath. perimeter relief with a max-
Lath is then properly imum distance between
lapped at sides and ends such joints of 30' with a
and tied every 6" to the maximum undivided area
3/4" channel. of 900 sq. ft. With perime-
Where it is advisable to install ter relief, maximum dis-
unrestrained ceilings, tance is 50' with maximum
having perimeters undivided area of 2500
separated from adjacent sq.ft.
walls or partitions, 2. Use three-coat plastering on
galvanized casing beads metal lath.

TECHNICAL DATA

SIZE AND SPACING OF CHANNEL FOR SUSPENDED CEILINGS SIZE AND SPACING OF CHANNEL FOR FURRED
AND SUSPENDED CEILINGS
Center to Main Channel
Center Spacing Size of (weight Maximum 3/4" (19.0 mm) C.R. Channel Maximum
of Hangers Cold Rolled per 1000 ft.) Center to Center Center to Center Cross Furring 300 lbs. Furring
Along Channel Channel (305 M) Spacing of Channel Spacing of Hangers (136 kg)/1000 ft. (305 M) Spacing
up to 3' 1 1/2" 475 lbs. 4' up to 3' (914 mm) 3/8" (9.5 mm) rib lath 24" (610 mm)
(914 mm) (38.1 mm) (216 kg) (1219 mm) up to 3' (914 mm) 3.4 lb. (1.5 kg) flat rib lath 19" (483 mm)
up to 3'6" (1067 mm) 3.4 lb. (1.5 kg) mesh lath 16" (406 mm)
up to 3'6" 1 1/2" 475 lbs. 3'6" up to 4' (1219 mm) 2.5 lb. (1.1 kg) mesh lath 12" (305 mm)
(1067 mm) (38.1 mm) (216 kg) (1067 mm)
up to 4' 1 1/2" 475 lbs. 3'
(1219 mm) (38.1 mm) (216 kg) (914 mm) MAXIMUM SPACING OF SUPPORTS FOR METAL LATH
Support Weight of Lath
Type of Lath Spacing lbs. per sq. yd. (kg/m2)
Diamond Mesh
(flat expanded) 16" (406 mm) 3.4 (1.9)
Flat Rib 16" (406 mm) 2.75 (1.5)
19" (483 mm) 3.4 (1.9)
DETAILS 3/8" (9.5 mm) Rib 24" (610 mm) 3.4 (1.9)

HANGER WIRE
3/4" C.R.
CHANNEL HANGER WIRE
1 1/2" C.R.
CHANNEL

3/4" C.R.
CHANNEL
1 1/2" C.R. 1 1/2" C.R.
TIE WIRE CHANNEL CHANNEL

GYPSUM PLASTER

GYPSUM
66 CASING BEAD PLASTER
FLEXIBLE DUST SEAL
METAL LATH NO. 15
FINISHED WALL LINE 66 CASING BEAD EXPANSION JOINT
METAL LATH
SUSPENDED METAL LATH AT WALL (UNRESTRAINED) LIGHTING TROFFER
09210K
SUSPENDED METAL LATH CONTROL JOINT
09210O 09210M
Scale: 3" = 1'-0"
Scale: 1 1/2" = 1'-0" Scale: 3" = 1'-0"

40 NATIONAL GYPSUM CONVENTIONAL PLASTER SYSTEMS

 09 23 00/NGC

BAR JOIST HANGER WIRE

HANGER WIRE

1 1/2" C.R.
3/4" C.R. 1 1/2" C.R. 3/4" C.R. CHANNEL
CHANNEL CHANNEL CHANNEL

TIE WIRE

TIE WIRE GYPSUM

PLASTER
METAL LATH
66 CASING BEAD
METAL LATH CAULK
66 CASING BEAD FINISHED WALL LINE
CAULK 3/4"

09 23 00
C.R.
FINISHED WALL LINE CHANNEL PLASTER METAL LATH
SUSPENDED METAL LATH AT WALL (UNRESTRAINED) FURRED METAL LATH CEILING SUSPENDED METAL LATH AT WALL (RESTRAINED)
09210N 09210P 09210L
Scale: 3" = 1'-0" Scale: 1 1/2" = 1'-0" Scale: 3" = 1'-0"
CONCRETE 3/8" RIB
FLOOR METAL LATH BEAM

PURLIN

PURLIN HANGER
WIRE

1 1/2" C.R.
CHANNEL
HANGER
CLIP
TIE WIRE

HANGER
WIRE
3/4" C.R. CHANNELS

METAL LATH

1 1/2" C.R.
CHANNEL BEAM FURRING CLIPS
NO. 11 W AND M GAUGE
SPRING STEEL

NO. 1 EXPANDED
PLASTER 3/4" C.R. METAL LATH CORNERBEAD
CHANNEL GYPSUM PLASTER

SUSPENDED METAL LATH CEILING BEAM PROTECTION

09210Q 09210R
Scale: 1 1/2" = 1'-0" Scale: 3" = 1'-0"

SPECIFICATIONS

SECTION 09 23 00 4. C 841, Specification for Application of Interior Lathing

GYPSUM PLASTERING and Furring.
THE FOLLOWING PARAGRAPHS ARE FOR INSERTION INTO SECTIONS OF 5. C 842, Specification for Application of Interior Gypsum
GENERIC SPECIFICATIONS OR GENERIC/PROPRIETARY SPECIFICATIONS
Plaster.
COVERING GYPSUM PLASTER PRODUCTS. THE NATIONAL GYPSUM PART 2 PRODUCTS
COMPANY PRODUCT NAME FOLLOWS THE GENERIC DESCRIPTION IN 2.02 MATERIALS
PARENTHESES.
A. Gypsum Plaster Base:
PART 1 GENERAL 1. Regular: A gypsum core lathing board surfaced with
1.02 REFERENCES absorptive paper on front, and long edges and
A. American Society for Testing and Materials (ASTM): complying with ASTM C 1396
1. C 28, Specification for Gypsum Plasters. (Kal-Kore BRAND Plaster Base).
2. C 59, Specification for Gypsum Casting and Molding a. Thickness: 1/2"
Plaster. b. Width: 4'
c. Length: 8' through 16'
3. C 1396, Specification for Gypsum Board (Gypsum Base d. Edges: Tapered
for Veneer Plaster).

NATIONAL GYPSUM CONVENTIONAL PLASTER SYSTEMS 41

 2. Fire-Resistant: A gypsum core lathing board with RECOMMENDATIONS
additives to enhance the fire resistance of the core and
surfaced with absorptive paper on front, and long edges
and complying with ASTM C 1396, Type X. BASECOAT PLASTER PROCEDURES
a. Thickness: 1/2" (Kal-Kore BRAND Fire-Shield C Plaster Two-Coat Work
Base) or 5/8" (Kal-Kore BRAND Fire-Shield and Fire- Apply first coat with firm pressure to form good bond on the
Shield C Plaster Base). Gypsum Plaster Base or masonry base; then immediately
b. Width: 4' double back (without cross-raking first coat) using material of
c. Length: 8' through 16' same proportion to build proper basecoat thickness. Straighten
d. Edges: Tapered to a true surface (without applying water) to receive the
3. Regular, Foil-Backed: A gypsum core lathing board second (finish) coat.
surfaced with absorptive paper on front, and long edges; Surface should be left sufficiently rough and porous to provide
backed with aluminum foil; and complying with ASTM suitable bond of the finish coat.
C 1396 (Kal-Kore BRAND Foil-Back Plaster Base). Three-Coat Work
a. Thickness: 1/2" “Scratch” – “brown” – finish is generally used for metal lath or
b. Width: 4' masonry bases, and is performed in discrete steps.
c. Length: 8' through 16'
d. Edges: Tapered • Scratch (first) coat: Should be applied with sufficient
material and pressure to obtain good bond over solid
B. Gypsum Plaster: bases or form full keys through metal lath. Provide
1. Base Plaster: Gypsum neat plaster complying with ASTM suitable material thickness for scratching (raking) to
C 28 (Gold Bond BRAND Two-Way Hardwall Gypsum obtain good mechanical keying of the “brown” coat.
Plaster). • Brown (second) coat: Shall be applied after the scratch
2. Base Plaster: Gypsum plaster with mill-mixed perlite (first) coat has set hard and still damp. Apply to give
aggregate complying with ASTM C 28 (Gold Bond BRAND mass and surface as for double-back in two-coat work.
Gypsolite Plaster).
Finish Coat Plaster Procedures
3. Finish Plaster: Gypsum gauging plaster complying with
ASTM C 28 (Gold Bond BRAND Super-White Gauging General Requirements (Basecoat Condition)
Plaster Quick Set and Gold Bond BRAND Super-White Application over a partially dry basecoat is preferred. If basecoat
Gauging Plaster Slow Set). is thoroughly dry, wet with even application of water to a
4. Finish Plaster: Gypsum moulding plaster complying with semi-dry condition. Avoid excess water. Do not apply finish
ASTM C 59 (Gold Bond BRAND Super-White Moulding to basecoats having free water on the surface.
Plaster). Application – Gauged Lime Putty Trowel Finish
5. Finish Plaster: Gypsum plaster for smooth finish Smooth Finishes
complying with ASTM C 587 (Kal-Kote BRAND Smooth • Scratch in tightly over the basecoat, covering the
Finish Plaster). surface completely, then double back immediately
6. Finish Plaster: Gypsum plaster for textured finish with material from the same gauge, filling out to a true,
complying with ASTM C 587 (Kal-Kote BRAND Texture even surface with total thickness of not more than 1/16".
Finish Plaster). • Allow finish to “draw” (lose moisture to basecoat and
7. Finish Plaster: Gypsum plaster for smooth finish ambient air) and firm up – then trowel it well to
complying with ASTM C 587 (Uni-Kal BRAND Veneer compact and close the surface under the edge of the
Plaster). trowel. Dash water on the surface for lubrication and
8. Finish Plaster: Gypsum plaster for smooth finish development of soft material along trowel’s edge to fill
with extended set time complying with ASTM C 587 surface depressions or other blemishes.
(X-KALibur BRAND Veneer Plaster). • When finish plaster setting action is under way, a
second (final) water troweling can be done with strong
pressure to obtain a polished surface if desired.
PART 3 EXECUTION
Texture Finishes
3.01 INSTALLATION
• Apply finish as above to a true, even surface with total
A. Metal Lath, Gypsum Plaster Base, and Accessories: In thickness not more than 1/8".
accordance with ASTM C 841.
• Allow finish to “draw” (lose moisture to basecoat and
B. Gypsum Plaster: In accordance with ASTM C 842 and the ambient air). Then begin floating, texturing, or skip
manufacturer’s recommendations, National Gypsum troweling to achieve desired texture. Additions of
Company “Gypsum Construction Guide.” clean graded silica may be required to achieve
C. Tolerances: For flatness of surface, do not exceed 1/4" in desired texture.
8' for bow or warp of surface and for plumb and level. Drying
Conventional plaster systems should be allowed to dry
30 days minimum under ambient conditions prior to
final decoration. Variances in humidity or poor drying
conditions may affect the drying process.
Storage
Gypsum plaster must be kept dry before use.
Storage conditions vary with location and
seasonal changes, which may affect storage life.
These conditions may affect product characteristics
such as setting time, working qualities, component
For additional information separation, or lumping, etc. Such aging is normally
a function of exposure to humid air, temperature,
® Phone 1-800-NATIONAL and physical support in warehousing. Adverse storage
(1-800-628-4662) conditions or prolonged storage may affect the working
qualities of the product. Rotate inventory frequently for
best results.

42 NATIONAL GYPSUM CONVENTIONAL PLASTER SYSTEMS

12TH EDITION 09 26 13/NGC

Veneer Plaster
Systems

09 26 13

43
VENEER PLASTER SYSTEMS

Veneer plaster
expands architectural
design limits as with Kal-Kore boards are screwed
this curved vaulted to steel studs or nailed or
ceiling. screwed to wood studs to
form a base.
DESCRIPTION 3. High resistance to cracking, 3. Provides less rigidity than
nail-popping, impact and similar standard plaster
abrasion failure. systems.
Veneer Plaster Systems consist 4. Mill-mixed plaster 4. When Uni-Kal/X-KALibur
of a 4' wide gypsum components help ensure will be applied, do not
plastering base with a uniform installation install Kal-Kore too far in
special, highly absorptive performance and finished advance of plastering since
paper surface that is job quality. Uni-Kal/X-KALibur bond
covered with thinly ADVANTAGES - ONE-COAT can be adversely affected if
troweled, special purpose SYSTEM (UNI-KAL/X-KALIBUR) face of Kal-Kore has
plasters. Two basic types become faded from light. If
of veneer plaster are 1. Requires only one plastering Kal-Kore has been faded,
available: Uni-Kal and material on the job. apply Kal-Kote Base Plaster
X-KALibur, which are 2. Slightly lower in-place cost or a bonding agent to
one-coat plaster system than two-coat system. obtain good bond.
products; and Kal-Kote, a 5. All are designed for trowel
two-coat plaster system. 3. Can be applied directly to
concrete block. application. Gold Bond
The gypsum plaster base, Veneer Plasters are not
Kal-Kore, is erected in the 4. X-KALibur is formulated suitable for conveyance or
same manner for both to have extended set application by
systems. Both veneer characteristics beyond conventional plastering
plaster systems can be traditional Uni-Kal setting Joints are reinforced with
machines. Kal-Mesh fiberglass webbing.
specified for virtually all times.
types of partition and 6. Compared to conventional Steel corner and casing beads
ADVANTAGES - TWO-COAT plasters, Veneer Plaster protect corners.
ceiling constructions SYSTEM (KAL-KOTE)
including wood or steel Systems are more subject to
framing or furring and 1. Kal-Kote System may be beading (ridging) and
masonry. For both used for plaster-embedded cracking at the joints under
residential and commercial electric radiant heating rapid drying conditions
buildings, either type of cable systems. such as those caused by
veneer plaster system 2. Same application low humidity, high
produces a wall more nail- techniques as for temperature and/or high
pop resistant than drywall conventional plaster. draft exposure.
and, when properly 3. Greater crack resistance 7. All provide a base over
installed, more crack than one-coat systems. which paints or other
resistant than conventional finishes should be applied.
lath and plaster. 4. Can be applied directly to
concrete block. 8. Do not use a polyethylene
ADVANTAGES - GENERAL vapor retarder unless
LIMITATIONS structure is ventilated
The advantages of veneer adequately during
plaster over other 1. Not recommended for
exterior use or where application of veneer
commonly used partition plasters.
and ceiling systems subject to weathering,
include: direct water contact or 9. A bonding agent must be
temperature exceeding applied to monolithic
1. Rapid installation which 125˚F (52˚C) for extended concrete prior to
reduces overall periods of time. application of either
construction time. system. Kal-Kote is applied in 2 coats,
2. Framing spacing is limited a base and a finish, to form
2. Appearance and surface of and partition heights are 10. Mix only full bags of
conventional plaster at a hard-surfaced, 1/8" total
reduced in comparison plaster for proper set. thickness.
lower cost than regular with some standard
plastering. 11. Do not use self-adhesive
constructions. mesh tape.

44 NATIONAL GYPSUM VENEER PLASTER SYSTEMS

 09 26 13/NGC
Veneer Plaster System Components
TECHNICAL DATA

GOLD BOND® BRAND KAL-KORE PLASTER BASE

Kal-Kore is a tapered edge gypsum plaster base having a blue
absorptive face paper surface designed to permit rapid trowel
application and strong bond of Kal-Kote, Uni-Kal and
X-KALibur plasters. Also available foil backed or Fire-Shield
(type X). Kal-Kore is manufactured to conform to ASTM
Specification C 1396 and CSA A82.27.

GOLD BOND® BRAND HI-ABUSE KAL-KORE PLASTER BASE

Gold Bond BRAND Hi-Abuse Kal-Kore Fire-Shield Type X
Plaster Base boards consist of a fire resistive Type X
gypsum core encased in a heavy, blue absorptive face
paper designed to permit rapid trowel application and
strong bond of Uni-Kal veneer plaster and strong liner
paper on the back side. Gold Bond BRAND Hi-Abuse
Kal-Kore Fire-Shield Type X Plaster Base features a
specially formulated core to provide fire resistance Pcs.
ratings when used in tested systems as well as greater Size Thickness Edge per Bdl.
resistance to surface indentation. Long edges of the

09 26 13
4'x8', 16' 3/8" (9.5 mm) Square 2
boards are tapered to allow joints to be reinforced and (1219 mm x 2438 mm, or
concealed with Kal-Mesh Tape and Uni-Kal Plaster. 4877 mm) Tapered
Gold Bond BRAND Hi-Abuse Kal-Kore Fire-Shield
Type X Plaster Base is manufactured to conform to
ASTM Specification C 1396 and Federal Specification 4'x8', 16' 1/2" (12.7 mm) Square 2
SS-L-30D Type VI Grade X (Fire-Shield). (1219 mm x 2438 mm, 1/2" (12.7 mm) or
4877 mm) FSK-C Tapered

4'x8', 16' 5/8" (15.9 mm) FSK Square 2

(1219 mm x 2438 mm, or
4877 mm) Tapered

4'x8', 12' 1/2" (12.7 mm) Square 2

Abrasion-Resistant Uni-Kal Veneer Plaster (1219 mm x 2438 mm, 5/8” (15.9 mm) FSK or
3657 mm) Hi-Abuse Tapered

Heavy Liner Paper

Enhanced Core

NATIONAL GYPSUM VENEER PLASTER SYSTEMS 45

KAL-KOTE BRAND BASE Coverage (est.)* thickness over the same
PLASTER 1/16" coat troweled on Kal- framing member size and
Kal-Kote Base Plaster is a Kote Base Plaster, 650-700 spacing with the same
specially designed high sq. yds. per ton (145-160 fasteners and 3/32" of Uni-
strength basecoat plaster sq. ft. per bag). Kal or X-KALibur.
for application 1/16" Specification Reference
minimum thickness over
Kal-Kore, masonry or KAL-KOTE BRAND TEXTURE ASTM Designation C 587.
monolithic concrete that FINISH PLASTER Bag Weight
has been treated with a Kal-Kote Texture Finish is 50 lbs. (22.7 kg)
bonding agent. designed to provide a
variety of decorative Water Ratio
Strength of Kal-Kote Base is
substantially greater than surfaces using common 13-15 quarts per bag
that exhibited by typical plastering techniques.
Applied as a 1/16" finish Coverage (est.)*
sanded basecoat plaster.
coat over Kal-Kote Base. It 3/32" on Kal-Kore Base, 600-
Fire Resistance requires the addition of 665 sq. yds. per ton (135-
Fire ratings equivalent to water only. 150 sq. ft. per bag). One
those of drywall systems coat to level over masonry,
Bag Weight 300-350 sq. yds. per ton
can be obtained by
applying the 50 lbs. (22.7 kg) (70-80 sq. ft. per bag).
corresponding Kal-Kore Water Ratio
type and thickness over the 11-12 quarts per bag *Coverage estimates are
same framing member size approximately the same as
and spacing, with the same Coverage (est.)*
over Kal-Kore Base Board
fasteners. The total plaster 1/16" coat troweled on Kal- for conventional plasters.
thickness should be a Kote Base Plaster, 650-700
minimum of 1/8". The sq. yds. per ton (145-160
minimum 1/8" thickness is sq. ft. per bag).
achieved by applying a
finish not exceeding 1/16"
over 3/32" of Kal-Kote UNI-KAL AND X-KALIBUR
Base Plaster. BRAND VENEER PLASTER

Specification Reference Uni-Kal and X-KALibur are

single component veneer
ASTM Designation C 587. plasters for application
Bag Weight over tapered edge 1/2”
80 lbs. (36.3 kg) Regular or 5/8” Fire-Shield
Kal-Kore, 5/8” Kal-Kore
Water Ratio Hi-Impact or as a finish
10-12 quarts per bag coat over Kal-Kote base.
Coverage (est.) When applied in a thin
coat 3/32" thick and
1/16" on Kal-Kore Base, 425- troweled to a smooth
475 sq. yds. per ton (150- finish, they provide a
170 sq. ft. per bag). One durable, abrasion-resistant
coat to level over masonry, surface for further
225-275 sq. yds. per ton decoration.
(80-100 sq. ft. per bag). X-KALibur has a longer
KAL-KOTE BRAND SMOOTH extended working time.
FINISH PLASTER Uni-Kal and X-KALibur may
Kal-Kote Smooth Finish is be worked to a variety of
designed to provide a textured finishes.
white smooth trowel finish Uni-Kal and X-KALibur
using conventional applied not exceeding
plastering techniques. 1/16" may be used as a
Apply not exceeding 1/16" finish coat over a 3/32"
over Kal-Kote Base. coat of Kal-Kote Base
Requires the addition of water Plaster for a total minimum
only. It may also be used thickness of 1/8".
as a finish for conventional Strength of Uni-Kal and
basecoat plasters. Small X-KALibur provides a
amounts of commercial surface resistant to
retarder may be cautiously abrasion, cracking and
used to slow the setting nail-pops.
time when used over
conventional basecoat Fire Resistance
plasters. Fire ratings equivalent to
Bag Weight those of drywall systems
can be obtained by
50 lbs. (22.7 kg) applying the corresponding
Water Ratio Kal-Kore type and
18-20 quarts per bag

46 NATIONAL GYPSUM VENEER PLASTER SYSTEMS

 09 26 13/NGC
Veneer Plaster Accessories* Used in Both Systems

KAL-KORNER BEAD E-Z STRIP® CONTROL JOINT

Formed of galvanized steel to Designed for drywall or veneer
protect exterior corners plaster systems. A vinyl
with veneer plastering. extrusion used as an
Flange length 1 1/4" . expansion or control joint
for ceilings or partitions.

EXPANDED VENEER KAL-MESH TAPE

CORNERBEAD A coated non-adhesive
Used as an alternate to the fiberglass tape which is
Kal-Korner Bead for stapled to Kal-Kore to
exterior corners. 1 1/4" reinforce all joints and
flanges. interior angles.

09 26 13
ARCH CORNERBEAD .093 ZINC CONTROL JOINT
Can be used straight for Designed as an expansion or
exterior corners or flanges, control joint for ceiling
or may be snipped and and partition areas for
bent to form arches. both drywall or veneer
plaster systems.

VENEER J TRIM CASING 1 1/2" DRYWALL FURRING

BEAD CHANNEL CLIP
Used as a finished edge at Attaches Screw Furring
door and window jambs Channel to 1 1/2" cold
by slipping over edge of rolled steel channel.
plaster base.

VENEER L TRIM CASING *Metal products are not manufactured by National Gypsum Company.
BEAD
Used as a finished edge at
door and window jambs.

NATIONAL GYPSUM VENEER PLASTER SYSTEMS 47

FASTENERS FOR ATTACHING KAL-KORE TABLE 1–SPACING OF FRAMING OR FURRING
Framing Kal-Kore Fastener Fastener Spacing Type of Maximum
Steel 1/2" (12.7 mm) Type S Screws 12" o.c. Max. Framing or Kal-Kore Spacing
Studs & 1" (25.4 mm) for single layer (305 mm) Furring Thickness on center
Furring 5/8" (15.9 mm) 1 5/8" (41.3 mm) for two-ply Wood 3/8" (9.5 mm) *16" (406 mm)
3/8" (9.5 mm) 1 1/4" (31.8 mm) annular or Ceiling 7" o.c. 1/2" (12.7 mm) **24" (610 mm)
4d box nails** (178 mm) Max. 5/8" (15.9 mm) 24" (610 mm)
Wood 1/2" (12.7 mm) 1 1/4" (31.8 mm) annular or Sidewall 8" o.c. ***Metal 3/8" (9.5 mm) N.A.
Framing 5d box nails** (203 mm) Max. 1/2" (12.7 mm) 16" (406 mm)
5/8" (15.9 mm) 1 3/8" (34.9 mm) annular or 5/8" (15.9 mm) 24" (610 mm)
6d box nails**
N.A.–Not Approved.
**Alternate: On walls, 1 1/4" (31.8 mm) Type W screws are spaced 12" * Bound edge of Kal-Kore must be at right angles to framing for ceiling or
(305 mm) when framing is 24" o.c. (610 mm) or 16" o.c. (406 mm). walls.
** Bound edge of Kal-Kore must be at right angles to joists. 16" (406 mm)
maximum spacing for bound edge of Kal-Kore parallel to joists.
*** On ceilings, furring channel [7/8" (22.2 mm) depth] shall span 48"
(1219 mm) maximum. Resilient furring channel [1/2" (12.7 mm) depth]
shall span 24" (610 mm) maximum. For greater spans, 1 5/8" (41.3 mm)
Steel Studs may be used as Ceiling Furring Channels provided they are
secured with flanges up (open side up) at spans not to exceed: 6' (1829
mm) at 12" o.c. (305 mm) spacing, 5'6" (1676 mm) at 16" o.c. (406 mm)
spacing and 5' (1524 mm) at 24" o.c. (610 mm) spacing.
Note: Veneer Plaster Systems are to be installed with maximum deflection criteria
of L/240.

48 NATIONAL GYPSUM VENEER PLASTER SYSTEMS

DETAILS 09 26 13/NGC

KAL-KORE WOOD STUD

KAL-MESH

WOOD STUDS

KAL-KORE KAL-KORE JOINT KAL-KOTE

BASE & FINISH

KAL-KOTE KAL-KORNER
BASE & FINISH BEAD KAL-MESH

CORNER-WOOD STUDS JOINT DETAIL

09215A 09215C
Scale: 2 1/4" = 1'-0" Scale: 2 1/4" = 1'-0"

09 26 13
TRACK 1/2"
5/8" FIRE-SHIELD E-Z STRIP VINYL
KAL-KORE GAP EXPANSION JOINT
KAL-MESH

STEEL STUD

5/8" GAP

2 1/2" STEEL 1 5/8" DRYWALL SCREWS

STUDS 24" O.C.

5/8" FIRE-SHIELD
KAL-KORNER KAL-KORE STRIPS
BEAD
KAL-KORE KAL-KOTE
BASE & FINISH
ONE HOUR FIRE RATED CONTROL JOINT DETAIL
Based on Warnock-Hersey Report No. WH-651-0318.1
CORNER-STEEL STUDS and Factory Mutual Design No. W1B-1 hr.
09215B 09215D
Scale: 2 1/4" = 1'-0" Scale: 2 1/4" = 1'-0"

1-1/2" C.R. CHANNEL HANGER WIRE

PIECE 16" LONG-NESTED
(TWO WIRE TIES EACH SIDE)

FURRING CHANNEL 1-1/2" C.R. CHANNEL

E-Z STRIP KAL-KOTE BASE & FINISH

KAL-KORE WIRE TIE EXPANSION JOINT

SUSPENDED VENEER PLASTER CONTROL JOINT

09215E

NATIONAL GYPSUM VENEER PLASTER SYSTEMS 49

 RECOMMENDATIONS

VENEER PLASTER FOR each channel with concrete Avoid joining Kal-Kore at applied to metal framing.
METAL AND WOOD stub nails or appropriate corners of doors, window To minimize this during
FRAMING fasteners through channel frames, and other openings, these conditions, joints
1. Wood Studs or Joists. flanges into the masonry or unless control joints are may be pre-treated using
Wood members shall meet concrete. Fasteners shall be created using E-Z Strip paper tape.
the minimum requirements spaced on alternate flanges Control Joints. Three acceptable methods of
of local building codes. not over 24" o.c. Apply 4. Fasten Kal-Kore to framing treating Kal-Kore joints are:
Framing shall not exceed Kal-Kore vertically or members with face out,
horizontally in maximum DRYWALL PAPER TAPE
spacing shown in Table 1 using the proper type and TREATMENT METHOD
on page 46. Most partition lengths to minimize end spacing of fasteners shown
fire ratings require that Kal- joints. under types of fasteners. 1. Trowel Kal-Kote Base
Kore be applied vertically. 4. Furred Ceilings with Bar Plaster, Uni-Kal or
5. Draw Kal-Kore tight to X-KALibur over joint line
When such ratings are not Joists. Attach regular furring framing. Drive fasteners
required, horizontal channel 16" o.c. to bar filling the channel formed
straight and dimple the by the tapered edges of the
application may be used to joists spaced up to 4' o.c. surface without breaking
minimize joints. For Resilient Furring Channel Kal-Kore board in an even
the paper face. fashion.
ceilings, application at right (wire-tied only) shall span a
angles to framing is maximum of 24". Wire tie KAL-KORNER BEAD 2. Center drywall paper tape
preferred. Furring Channel to joists or APPLICATION over the joint line and
2. Metal Studs. Align floor use 1 1/2" Drywall Furring Install Kal-Korner Bead using embed the tape into the
and ceiling tracks to ensure Channel Clip for 1 1/2" appropriate fasteners soft plaster using a trowel
plumb partition. Secure carrying channel. Apply spaced 12" apart. and level the joint. Tape
track with appropriate Kal-Kore with paper bound the full length of the joint.
edges at right angles to the E-Z STRIP CONTROL JOINT
fasteners at a maximum of APPLICATION 3. Allow the treated joints to
24" o.c. Position studs in furring channel. set prior to general plaster
track on specified centers Install E-Z Strip Control Joint
KAL-KORE AND HI-ABUSE® at 30' max. spacing on application.
by rotating into place for a KAL-KORE APPLICATION
friction fit. Secure studs walls and 50' max. spacing
Note: Application shall in either direction on
located adjacent to door conform to ASTM C 844.
and window frames, ceilings. Apply the control
partition intersections and 1. Cut and position Kal-Kore joint with staples spaced 6"
corners by self-drilling accurately. Bring all joint along each side of the
sheet metal screws through edges together but do not flanges.
both flanges of studs and force into place. Position TREATMENT OF KAL-KORE
tracks or by use of steel all end joints over framing JOINTS
stud clinching tool. Apply members. To avoid ridging,
minimize gaps between Pre-treat all joints and
Kal-Kore vertically for most fasteners in Kal-Kote and
fire ratings. When ratings adjacent boards.
Uni-Kal Plaster Systems
are not required, horizontal 2. Minimize the number with Kal-Kote Base Plaster,
application may be used to of end joints by using Uni-Kal, X-KALibur or Sta-
minimize joints. maximum practical lengths Smooth Joint Compound.
3. Masonry Wall Furring with with proper positioning.
Low humidity, high
Screw Furring Channel. 3. Stagger joints so that they temperatures and rapidly
Attach furring channel occur on different framing circulating air can cause
vertically spaced not to members and will not be cracking of plaster and joint
exceed spacing shown in directly opposite one beading when Kal-Kore is
Table 1 on page 44. Fasten another on partitions.

Uni-Kal or Kal-Kote Smooth Finish Kal-Kote Texture Finish

X-KALibur Finish

Kal-Kote Base Kal-Kote Base

Kal-Kore Plaster Base Kal-Kore Plaster Base Kal-Kore Plaster Base

50 NATIONAL GYPSUM VENEER PLASTER SYSTEMS

 09 26 13/NGC

STA-SMOOTH PAPER TAPE guard against dryouts

TREATMENT METHOD (primarily avoiding direct
1. Mix Sta-Smooth Compound exposure to concentrated
per instructions on sources of heat and drafts.)
package. Do not Special attention should also
contaminate the compound be given to temperature
with other materials, dirty conditions under which the
water or previous mixes. system is installed. Both
Do not retemper. “in-place” and application
2. Apply the Sta-Smooth performance of individual
Compound to the joint by Veneer System components
hand or machine tool. The will be greatly enhanced if
drywall paper tape must be all construction areas and
centered over the joint line materials are at a suitable
and embedded into the soft temperature equilibrium
compound. Do not over- before, during and after
installations. During cold C. Caution is advised against for the finish plaster when
trowel to a slick surface. mixing more than two necessary.
Leave the surface rough to weather, maintain a
temperature 55˚F (13˚C) to successive batches without Smooth Finish Over Basecoat
provide mechanical keying thorough equipment clean-
of the plaster. 70˚F (21˚C) before, during 1. Apply only over properly
and after installation of all up to avoid undue set
3. Allow the treated joints to acceleration. prepared Kal-Kote basecoat
system components until plaster. Scratch-in tightly,
set and dry prior to general veneer plaster has dried. D. Avoid the practice of
plastering. then double back with
MIXING mixing partial bags since material from the same
KAL-MESH TREATMENT this leads to difficulty in batch immediately to
METHOD Equipment: Mixing should be maintaining uniform create a uniform coat not

09 26 13
done with a high-speed material qualities.
Do not use self-adhering mechanical mixer. A exceeding 1/16" in average
mesh. paddle-type agitator fitted JOB SETTING ADJUSTMENT thickness.
1. Center and secure Kal- to a 500-600 RPM heavy 1. Basecoat and Finish 2. Remove trowel marks, “cat
Mesh over all joints and duty, 1/2" electric drill and Plasters: Small amounts of faces,” and other major
interior angles with 1/4" or a clean, smooth-sided commercial retarder or surface imperfections by
5/16" staples. drum of convenient size commercial gypsum type “drawing-up” or “laying
2. Position staples a maximum are recommended for accelerator may be down” the surface with
of 24" apart as follows: rapid, efficient mixing of all cautiously used to adjust light trowel pressure when
Kal-Kote Plaster types. setting time when extreme plaster has stiffened.
A. Joints: at alternate edges conditions demand. When
for the run from end to end Water Ratios: Use only clean, Use water sparingly if needed,
fresh water suitable for commercial retarder or but do not over-trowel or
and directly opposite one accelerator is used, add to
another at either end. human consumption. over-water because this
Basecoat: 10-12 qts. per 80 mixing water directly, or in aggravates any normal
B. Angles: along ceiling lb. bag. Smooth Finish: 18- previously prepared water tendency for blistering
edge only for wall-to- 20 qts. per 50 lb. bag. solution form to obtain the when working over low
ceiling angles. Along one Texture Finish: 11-12 qts. most uniform effect. suction bases. Such
edge for wall-to-wall per 50 lb. bag. Uni-Kal and 2. Never use gauging or blistering will be eliminated
angles. X-KALibur: 13-15 qts. per moulding plasters in place by the final water-troweling
3. After the first staples are 50 lb. bag. of commercial accelerator operations.
placed at the end of a joint PROCEDURE since they can adversely 3. Water-trowel to densify
or angle, pull unstapled affect working qualities. and polish the surface to
Kal-Mesh as stapling 1. Put all but 1 to 2 qts. of the the desired degree when
proceeds to ensure that proper water volume in a KAL-KOTE APPLICATION
OVER KAL-KORE plaster has set, eliminating
it will lie flat against the suitable mixing drum. any blistering if present.
Kal-Kore. Note: Starting with an Basecoat Over Kal-Kore Never use a felt “blister
4. Pre-treat all joints and Kal- insufficient amount of 1. Tightly scratch material into brush” as a substitute for
Beads with Kal-Kote, Uni- mixing water will seriously previously treated joints water troweling!
Kal or X-KALibur Plaster. degrade mixing and and cornerbeads, then 4. Uni-Kal and X-KALibur
Tightly trowel over joint application performance. immediately scratch-in Plaster may be substituted
line in both directions to 2. Add plaster and allow to tightly over the wall and/or for Kal-Kote Smooth Finish.
prevent voids, feathering soak for about 1 minute or ceiling area.
to a maximum width of Texture Finish Over Basecoat
add plaster as mixer is 2. Double back over the area
about 6". turning, then mix until just troweled with material 1. Apply per (1) under Smooth
5. Allow the treated joints to uniformly wetted. from the same batch, Finish.
set prior to general plaster 3. Add remaining water and bringing total thickness up 2. When plaster has stiffened,
application. mix sufficiently to obtain to 1/16" minimum. float its surface to any
desired lump-free material 3. When plaster has “taken desired finish.
PLASTERING
fluidity. up,” eliminate excessive Do not float the soft surface
Note: Application shall trowel marks and fill all of plaster which has
conform to ASTM C 843. Note:
surface voids and already set.
The same general job A. Mixing periods greater imperfections to obtain a
than 5 minutes will not Up to equal parts by weight of
conditions used in good reasonably uniform surface. clean, graded silica sand
conventional plastering be required if proper Do not over-trowel to a
equipment and procedure may be added to Uni-Kal
practice should be slick surface. Roughen the and X-KALibur to aid
maintained. However, are used. unset basecoat plaster texturing.
because Veneer Plaster B. Mix no more than two bags surface with a serrated
coats are thin, particular per batch to avoid mixing darby or lightly wire rake to
action must be taken to too far in advance of provide mechanical keying
application.
NATIONAL GYPSUM VENEER PLASTER SYSTEMS 51
 APPLICATION PROCEDURES Smooth or Textured Finishes
Note: Application shall Apply finishes to the Kal-Kote
conform to ASTM C 843. Plaster as outlined under
Kal-Kote Base Application the regular Kal-Kote System
Over Bonding Agent as described on page 49.
1. First straighten any major Uni-Kal or X-KALibur
surface irregularities, such Application Over Bonding
as holes, ridges, wavy Agent
sections, etc. Scratch 1. First straighten any major
plaster in tightly by trowel surface irregularities such
and fill out to any adjacent as holes, ridges, wavy
level area. sections, etc. Scratch
2. After the straightening plaster in tightly by trowel
material has set, trowel in a and fill out to any adjacent
tight scratch coat over the level area.
entire area to be plastered; 2. Allow the straightening
then immediately double material to set.
back with material from the 3. Tightly scratch material in
same batch to minimum over the wall and/or ceiling
thickness of 1/16" or as area. This application
required to achieve a level should be about 1/16"
surface. Use a rod or thick. Double back over
feather edge if needed. the area just troweled with
3. When plaster has “taken material from the same
up,” eliminate excessive batch, bringing total
trowel marks and fill all thickness up to 3/32"
surface voids and minimum.
imperfections to obtain a 4. Begin finish troweling at
reasonably uniform surface. time of initial set, using
Do not trowel to a slick water sparingly. Final
surface. Roughen the unset troweling must be
UNI-KAL OR X-KALIBUR VENEER PLASTERS DIRECT basecoat plaster surface
APPLICATION OVER TO BOND-COATED accomplished before
with a serrated darby or complete set takes place, as
KAL-KORE MONOLITHIC CONCRETE lightly wire rake to provide evidenced by darkening of
1. Tightly scratch material into DESCRIPTION mechanical keying for the the surface.
previously treated joints finish plaster when
The Kal-Kote System, necessary.
and cornerbeads, then consisting of a basecoat
immediately scratch-in plaster and a finish coat
tightly over the wall and/or plaster, Uni-Kal or
ceiling area. X-KALibur may be applied
2. Double back over the area directly to monolithic
just troweled with material concrete treated with a
from the same batch bonding agent.
bringing total thickness up
to 3/32" minimum. LIMITATIONS
3. Begin finish troweling at 1. Surface to be plastered shall
time of initial set, using be treated with a bonding
water sparingly. Final agent applied according to
troweling must be manufacturer’s directions.
accomplished before The performance of this
complete set takes place, as system is the sole
evidenced by darkening of responsibility of the
the surface. bonding agent
manufacturer.
Note: Uni-Kal or X-KALibur
may be applied to produce 2. Concrete should be aged
a textured finish. at least one month prior to
plastering.
A. When Uni-Kal or
X-KALibur is mixed, add 3. Kal-Kote Smooth or
up to but not exceeding Texture Finishes are not
50 lbs. of silica sand, designed for direct
texturing grade, per application to concrete,
50 lb. bag of plaster. but must first have Kal-
Kote Base Plaster applied
B. The sanded Uni-Kal or to fill and level surface.
X-KALibur mix should
be scratched-in tightly 4. Do not apply system to the
over the plastering base. interior side of exterior
Immediately double walls below grade. To use
back over the area just above grade these walls
troweled with material shall be kept dry and shall
from the same batch. have been properly
waterproofed on the Veneer plaster performs well
C. When plaster is well exterior side to prevent in high traffic areas such as
taken up, float to the water penetration. stairways and halls.
desired texture finish.

52 NATIONAL GYPSUM VENEER PLASTER SYSTEMS

 09 26 13/NGC

Veneer plaster walls are particularly suited to accommodate The Veneer plaster wall system is particularly suited to
wall situations where light conditions require smooth, even residential and commercial construction in areas which need

09 26 13
expanses of wall. strength for special architectural details, and unusual design
elements.

VENEER PLASTERS DIRECT KAL-KOTE APPLICATION and Uni-Kal or X-KALibur

TO UNIT MASONRY Note: Application shall Veneer Plaster Systems.
DESCRIPTION conform to ASTM C 843. The Z Furring Channel is
manufactured from
The Kal-Kote System, Proceed with the full field of galvanized steel (.0179"
consisting of a basecoat the wall by scratching-in min. base steel) and is
plaster and a finish coat tightly, then double back produced with web depths
plaster, Uni-Kal or immediately with material of 1", 1 1/2" and 2". The
X-KALibur, the one-coat from the same batch to a furring channel which is
system, may be applied minimum thickness of applied to a masonry wall
directly to masonry surfaces 1/16" over the block holds the insulation in
providing the following surface, or as required to place and the wide flange
recommendations are level. serves as framing for the
followed. Kal-Kote Finishes should be application of the Kal-Kore
RECOMMENDATIONS kept as thin as possible and plastering base.
applied as described on
1. Surface must be free from page 44 and 51. LIMITATIONS
dirt, grease, oil, mold, 1. Since the interior wall
parting agents, or any UNI-KAL OR X-KALIBUR surface will take the
material which will prevent APPLICATION general configuration of the
plaster adhesion. Proceed with full field of the masonry wall, it may be
2. When erecting masonry, wall by scratching-in necessary when applying
strike joints flush. If tightly, then double back the system to unit masonry
masonry has recessed immediately with same to use portland cement
joints, fill joints flush to batch of material to a plaster to bring the wall to
masonry surface with minimum thickness of a plane surface.
basecoat plaster, Uni-Kal or 3/32" over the block 2. This system is mainly for
X-KALibur and allow to set. surface. new masonry construction.
EXTERIOR CORNERS Caution: Since Uni-Kal On well-cured concrete or
or X-KALibur is a one-coat masonry, it may be difficult
Install cornerbead with material system, exercise to properly drive fasteners.
adhesive at least 4 and care in leveling the wall to
preferably 16 hours before 3. Power-driven fasteners
compensate for the uneven shall be used only for
plastering. Apply a suction.
continuous bead of attachment to monolithic
adhesive approximately VENEER SYSTEMS APPLIED concrete surfaces.
1/4" x 1/4" along the inside TO MASONRY WITH Z 4. Kal-Kore should be applied
of both cornerbead flanges. FURRING CHANNEL within 24 hours of foam
Press the bead firmly over SYSTEM application.
the corner so that adhesive DESCRIPTION
is in continuous contact
with masonry surface. This system consists of a
Align bead and allow to Z Furring Channel, rigid
stand undisturbed at least insulation and the
4 hours. components of the Kal-Kote

NATIONAL GYPSUM VENEER PLASTER SYSTEMS 53

Design flexibility is achieved with veneer plaster systems.

APPLICATION PROCEDURES to-ceiling insulation, wider PAINTING PLASTER STORAGE

1. Begin application of than insulation thickness, Various job conditions such as Gypsum plaster must be kept
Z Furring members by but not exceeding 3". suction differences, wet or dry before use. Storage
positioning first channel Continue application of only partially dry walls, and conditions vary with
vertically at a corner, furring and insulation reactions between paint and location and seasonal
locating it on the wall progressively as described lime may cause unsatisfactory changes, which may affect
adjacent to the wall being above. paint finishes, particularly storage life. These
insulated first. At windows, doors and trim on new construction. conditions may affect
The insulation thickness areas, use wood nailers, Alkali-resistant primers product characteristics such
determines the distance of nominal 2" wide x specifically formulated for as setting time, working
Z Furring web from wall insulation thickness plus use over new plaster will qualities, component
being insulated. At the 1/32". Use the nailers also permit decorating with oil separation, or lumping, etc.
appropriate distance, with at wall-floor angles to or latex type paints. Quality Such aging is normally a
wide flange pointing support trim and provide paint products should be function of exposure to
toward applicator, secure backing for base. used and manufacturers’ humid air, temperature,
Z Channel with appropriate 2. Apply Kal-Kore to the recommendations and physical support in
fasteners, spaced 24" o.c. flanges of Z Channel with followed. Finished plaster warehousing. Adverse
driven through short flange. 1" Type S screws spaced should be painted or storage conditions or
(Note: Power-driven 12" o.c. Normally, vertical covered to conceal prolonged storage may
fasteners are not application of Kal-Kore is possible discoloration. The affect the working qualities
recommended for use recommended; however, paint system should be of the product. Rotate
with masonry block.) for installations 8' or less in suitable for use over plaster inventory frequently for
height, horizontal surfaces that contain lime, best results.
Install 24" wide floor-to-
ceiling insulation board, application may be which has a high pH of 10-
pressed snugly against web preferred since the number 13.
of first Z. Install next Z with of joints would be reduced. It is essential that plaster be
the wide flange 3. Apply Kal-Mesh and Kal- sound and completely dry
overlapping the edge of the Korner Bead according to before painting. Under
first insulation board. procedures described on good drying conditions,
Fasten Z to wall through page 50 and 51. veneer plaster may be
narrow flange. Continue in 4. Mix and trowel on Kal-Kote painted 48 hours after
this manner with Z Furring Base and Finish Plaster or application.
member 24" o.c. to end of Uni-Kal Plaster as High build, heavy duty and
wall. Locate last Z so that described on pages 46, 51 special purpose coatings
web is located a distance and 52. such as Epoxy are not
equal to insulation recommended over veneer
thickness from adjoining or job gauged lime putty
wall. Cut last insulation finishes.
board to fit remaining
space. In all cases, the paint
manufacturer should be
At exterior corner, attach the Z consulted and approve
through its wide flange with paint system suitability for
narrow flange extending use with gypsum/lime
beyond the corner. Begin finish plaster.
with a narrow strip of floor-

54 NATIONAL GYPSUM VENEER PLASTER SYSTEMS

 INSTALLATION 09 26 13/NGC
KAL-KORNER BEAD

KAL-MESH
KAL-MESH

KAL-KOTE FINISH
(Smooth
or Texture)

KAL-KOTE BASE

09 26 13
KAL-MESH

KAL-KORE
FOR USE WITH WOOD STUDS
KAL-KORNER OR METAL STEEL STUDS
BEAD

1" X 4" T& G FINISH FLOOR OR

5/8" T& G PLYWOOD
1" X 6" SUBFLOOR OR 1/2”
PLYWOOD
1" X 4" BRIDGING

2" X 10" WOOD JOISTS

16" O.C.

KAL-MESH

1" TYPE S SCREWS R.F. CHANNEL 24" O.C.

12" O.C.

KAL-KOTE BASE

1/2" FIRE-SHIELD C
KAL-KORE KAL-KOTE FINISH
(Smooth or Texture)
U.L. DESIGN L515

NATIONAL GYPSUM VENEER PLASTER SYSTEMS 55

 SPECIFICATIONS

SECTION 09 26 13
VENEER PLASTER
THE FOLLOWING PARAGRAPHS ARE FOR INSERTION INTO SECTIONS OF GENERIC SPECIFICATIONS OR GENERIC/PROPRIETARY SPECIFICATIONS COVERING
VENEER PLASTER PRODUCTS. THE NATIONAL GYPSUM COMPANY PRODUCT NAME FOLLOWS THE GENERIC DESCRIPTION IN PARENTHESES.

PART 1 GENERAL 5. Fire Resistant, Abuse Resistant: A gypsum core lathing board
1.02 REFERENCES with additives to enhance fire and impact resistance and
surfaced with absorptive paper on front and long edges with
A. American Society for Testing and Materials (ASTM): heavy liner paper bonded to the back side; and complying
1. C 587, Specification for Gypsum Veneer Plaster. with ASTM C 1396, Type X (Hi-Abuse BRAND Kal-Kore Fire-
2. C 1396, Specification for Gypsum Board (Gypsum Shield Plaster Base).
Base for Veneer Plaster). a. Thickness: 5/8"
3. C 843, Specification for Application of Gypsum Veneer b. Width: 4'
Plaster. c. Length: 8' through 12'
d. Edges: Tapered
4. C 844, Specification for Application of Gypsum Base to
Receive Gypsum Veneer Plaster. B. Gypsum Plaster:
1. Base Plaster: High strength gypsum plaster complying
with ASTM C 587 (Kal-Kote BRAND Base Coat Plaster).
PART 2 PRODUCTS
2. Finish Plaster: Gypsum plaster for smooth finish
2.01 MANUFACTURER complying with ASTM C 587 (Kal-Kote BRAND Smooth
A. National Gypsum Company Finish Plaster).
2.02 MATERIALS 3. Finish Plaster: Gypsum plaster for textured finish
A. Veneer Plaster Base: complying with ASTM C 587 (Kal-Kote BRAND Texture
Finish Plaster).
1. Regular: A gypsum core lathing board surfaced with
absorptive paper on front, and long edges and IF TEXTURED FINISH IS SPECIFIED FOR BELOW, SAND MAY BE REQUIRED.
complying with ASTM C 1396 (Gold Bond BRAND 4. One Coat Plaster: Gypsum plaster for single component
Kal-Kore Plaster Base). application complying with ASTM C 587 (Uni-Kal BRAND
a. Thickness: 3/8" or 1/2" Veneer Plaster).
b. Width: 4' 5. One Coat Plaster: Extended set gypsum plaster for single
c. Length: 8' through 16' component application complying with ASTM C 587
d. Edges: Tapered (X-KALibur BRAND Veneer Plaster).
2. Fire-Resistant: A gypsum core lathing board with
additives to enhance the fire resistance of the core and PART 3 EXECUTION
surfaced with absorptive paper on front, and long edges
and complying with ASTM C 1396, Type X. 3.01 INSTALLATION
a. Thickness: 1/2" (Gold Bond BRAND Kal-Kore Fire- A. In accordance with the manufacturer’s recommendations,
Shield C Plaster Base) or 5/8" (Gold Bond BRAND Kal- National Gypsum Company “Gypsum Construction
Kore Fire-Shield and Fire Shield C Plaster Base). Guide,” and the following standards:
b. Width: 4' 1. Gypsum plaster base and accessories in accordance
c. Length: 8' through 16' with ASTM C 844.
d. Edges: Tapered 2. Gypsum veneer plaster in accordance with ASTM
3. Regular, Foil-Backed: A gypsum core lathing board C 843.
surfaced with absorptive paper on front, and long edges; B. Tolerances: For flatness of surface, do not exceed 1/4" in
backed with aluminum foil; and complying with ASTM 8' for bow or warp of surface and for plumb and level.
C 1396 (Gold Bond BRAND Kal-Kore Foil-Back Plaster
Base).
a. Thickness: 1/2"
b. Width: 4'
c. Length: 8' through 16'
d. Edges: Tapered
4. Regular, Abuse-Resistance: A gypsum core lathing board
with additives to enhance impact resistance and
surfaced with absorptive paper on front and long edges
with heavy liner paper bonded to the back side; and
complying with ASTM C 1396 (Gold Bond BRAND Hi-
Abuse Kal-Kore Plaster Base).
a. Thickness: 1/2"
b. Width: 4'
c. Length: 8' through 12'
d. Edges: Tapered

56 NATIONAL GYPSUM VENEER PLASTER SYSTEMS

12TH EDITION 09 29 00/NGC

Gypsum Board
Systems

09 29 00

57
Gold Bond® BRAND Gypsum Board Products
National Gypsum Company Our concentration isn’t on Frame Wall and Ceilings, Company. Substitution of
features a wide variety of building products alone, Gypsum Board Over Foam any product or other
gypsum board products however. At the National Insulated Masonry and brands in a tested system
and accessories including Gypsum Research and Solid Laminated Partitions. is not recommended.
regular gypsum board, Fire- Testing Center, we develop Before a National Gypsum Field installation of tested sys-
Shield fire resistant board, complete construction sys- System is released to the tems must be identical to
1/4" High Flex Gypsum tems. In such systems, building industry, it is thor- laboratory installation to
Board, 1/2" High Strength products are evaluated oughly tested, and results are produce optimum perfor-
Ceiling Gypsum Board, Hi- together as complete build- correlated and charted to mance of these systems.
Impact Gypsum Board, ing assemblies–walls, parti- make it easier for the builder Performance tests are con-
Gridstone Ceiling Boards, tions, floors and ceilings. or specifier to match a sys- ducted in accordance with
Gypsum Sheathing, Fire- We have included in this sec- tem to their needs or to the accepted national stan-
Shield Shaftliner, Durasan tion details and application building codes. dards under controlled lab-
Prefinished Gypsum Board, instructions for many of oratory conditions to mini-
Exterior Soffit Board, and The drywall construction sys-
those assemblies: Steel tems referred to in this cata- mize variances and to per-
Joint Treatment products. Frame Partitions, Steel mit comparison of test
log are designed primarily
Frame Ceilings/Furring with materials manufac- results with all types of sys-
Channels or Studs, Wood tured by National Gypsum tems, similar and dissimilar.

DESCRIPTION
Description Core Thickness/Type Width/Edge Lengths

Gold Bond BRAND Gypsum Regular 1/4" (6.3 mm) 4' (1219 mm) 6' (1828 mm)
Board with tapered edge 3/8" (9.5 mm) Square thru
1/
permits smooth joint 1/2" (12.7 mm)* or 16' (4876 mm)
BRAND WALLBOARD

GOLD BOND BRAND

® 1/2
treatment; surface takes any Tapered
BO ND WALLBOARD ® 1/2" decoration. Basic
GOLD BRAND WALLBOARD
ND
® 1/2" x recommendations:
GOLD BO BRAND 1/2" board for single layer;
WALLBOARD
® 1/2" x 8
GOLD BOND BRAND 3/8" board for 2-layer; 1/4"
WALLBOARD
® 1/2" x 8
GOLD BOND BRAND board is regular gypsum
ND W
®
ALLBOARD 1/2" x 8'
GOLD BO BRAND LBOARD 1/2" x 8' T board used in remodeling and
®
W AL
GOLD BOND BRAND LB OARD for sound control in double
®
W AL
GOLD BOND layer applications. Refer to
page 65. Note: 1/2" gypsum board available in 54" widths.

Gold Bond BRAND XP Gypsum Regular 1/2" (12.7 mm) 4' (1219 mm) 8' (2438 mm)
Board is designed to provide Square 10' (3048 mm)
extra protection against mold or 12' (3657 mm)
and mildew compared to stan- Tapered
dard gypsum board products.
Tapered edge permits smooth
joint treatment. Refer to page
70.

Gold Bond BRAND Fire-Shield Type X 5/8" (15.9 mm) FSW* 4' (1219 mm) 6' (1828 mm)
Gypsum Board is manufac- Square thru
tured with a type X core to or 16' (4876 mm)
achieve fire resistance ratings Tapered
when used in recommended
systems. Refer to page 66. Type X 1/2" (12.7 mm) FSW-C 4' (1219 mm) 6' (1828 mm)
Gold Bond BRAND Fire-Shield C Square thru
Gypsum Board has a specially or 16' (4876 mm)
formulated type X core to Tapered
achieve superior performance
when used in specific fire Type X 5/8" (15.9 mm) FSW-C 4' (1219 mm) 8' (2438 mm)
rated assemblies. May be used Square thru
in designs requiring Fire-Shield or 14' (4267 mm)
Gypsum Board (type X core). Tapered
Refer to page 66.
Note: 5/8" Fire-Shield gypsum board available
in 54" widths.
* Available with Foil Backing. Refer to page 86.
Reference www.nationalgypsum.com for fire safety information.
58 NATIONAL GYPSUM BOARD PRODUCTS
 09 29 00/NGC

Description Core Thickness/Type Width/Edge Lengths

Gold Bond BRAND XP Fire-Shield Type X 5/8" (15.9 mm) FSW-3 4' (1219 mm) 8' (2438 mm)
Gypsum Board is manufac- Square thru
tured with a fire resistive type X or 12' (3657 mm)
gypsum core and is designed to Tapered
provide extra protection against
mold and mildew. Refer to Type X 1/2" (12.7 mm) FSMR-C 4' (1219 mm) 8' (2438 mm)
page 70. Square thru
Gold Bond BRAND XP Fire-Shield C or 12' (3657 mm)
Gypsum Board has a specially Tapered
formulated type X gypsum core
to achieve superior fire resis- Type X 5/8" (15.9 mm) FSMR-C 4' (1219 mm 4' (1219 mm)
tance performance and is Square thru
designed to provide extra pro- or 12' (3657 mm)
tection against mold and Tapered
mildew. Refer to page 70.

Gold Bold BRAND Sta-Smooth Regular 1/2" (12.7 mm) 4' (1219 mm) 6' (1828 mm)
Gypsum Board, used with Sta-Smooth thru
1/2
ProForm BRAND Sta-Smooth Joint 16' (4876 mm)
BRAND WALLBOARD ® 1/2" Compound, forms a drywall
STA-SMOOTH BRAND ALLBOARD system offering maximum joint
W
STA-SMOOTH BRAND ALLBOARD
® 1/2" x
Type X 5/8" (1519 mm) FSW 4’ (1219 mm) 8' (2438 mm)
OO TH W ® 1/2" x strength. Two edge Sta-Smooth thru
STA-SM BRAND WALLBOARD configurations provide relief on
® 1/2" x1 16' (4876 mm)
STA-SMOOTH BRAND ALLBOARD 1/2" x12 joint deformities. The round
W ®

STA-SMOOTH BRAND ALLBOARD 1/2" x 12 edge configuration solves joint

OOTH W ®

STA- SM
BRAND WALLBOARD ® 1/2" x 12'
deformity problems caused by Type X 1/2" (12.7 mm) FSW-C 4' (1219 mm) 6' (1828 mm)
STA-SMOOTH BRAND ALLBOARD twisted framing, damaged board
W ®

edges, poor alignment and Sta-Smooth thru

STA-SMOOTH 16' (4876 mm)
extremes in humidity and
temperature. Refer to page 67.

09 29 00
Note: 1/2" regular Sta-Smooth gypsum board
available in 54" widths.

Gold Bond BRAND Kal-Kore Regular 3/8" (9.5 mm) 4' (1219 mm) 8' (2438 mm)
Plaster Base is a tapered edge 1/2" (12.7 mm) Square thru
1/2"
gypsum board plastering base or 16' (4876 mm)
BRAND PLASTER BA
SE having a blue absorptive face
KAL-KORE BRAND
® 1/2" x
Tapered
PL ASTER BASE ® 1/2" x paper surface designed to
KAL-KORE BRAND SE permit rapid trowel
PLASTER BA ® 1/2" x 8 Type X 1/2" (12.7 mm) FSK-C 4' (1219 mm) 8' (2438 mm)
KAL-KORE BRAND SE application and strong bond
KORE PLASTER BA ® 1/2" x 8 5/8" (15.9 mm) FSK Square thru
KAL- BRAND PLASTER BA
SE 1/2" x 8' T of veneer or conventional
KAL-KORE BRAND
®
or 16' (4876 mm)
PL AS TER BASE
® 1/2" x 8' T gypsum plaster. Refer to Tapered
KAL-KORE BRAND SE page 45.
PLASTER BA® 1/2" x 8' TE
KAL-KORE BRAND SE
KO RE PLASTER BA
®

KAL- Note: 1/2" regular Kal-Kore plaster base available

in 54" widths.

Gold Bond BRAND Gypsum Regular 1/2" (12.7 mm) 4' (1219 mm) 8' (2438 mm)
Sheathing is used Square 9' (2743 mm)
1/2" as an underlayment on 10' (3048 mm)
THING exterior walls. Finish
JUMBO SHEA ® BRAND
1/2"
GOLD BOND BRAND
MBO SH EA THING 1/2" x materials are applied with Type X 5/8" (15.9 mm) FSW-3 4' (1219 mm) 8' (2438 mm)
JU ®

GOLD BOND BRAND THING fasteners through sheathing Square 9' (2743 mm)
JUMBO SHEA 8
®
1/2" x
GOLD BOND BRAND BO SHEATHIN
G 1/2" x 8 into studs or furring strips. 10' (3048 mm)
JU M ®

GOLD BOND BRAND BO SHEATHIN

G 1/2" x 8' T Refer to page 28.
JU M®

GOLD BOND BRAND THING 1/2" x 8' T

JUMBO SHEA
®

GOLD BOND BRAND SH EATH ING 1/2" x 8' TE

®
JUMBO
GOLD BOND BRAND BO SHEATHIN
G
®
JU M
GOLD BOND

NATIONAL GYPSUM BOARD PRODUCTS 59

 Description Core Thickness/Type Width/Edge Lengths

Gold Bond BRAND Exterior Soffit Regular 1/2" (12.7 mm) 4' (1219 mm) 8' (2438 mm)
Board is designed to provide, Sta-Smooth thru
1/2" in a fire resistive gypsum 12' (3658 mm)
BRAND SOFFIT BOAR
D® 1/2" ceiling board, the extra
GOLD BOND BRAND Type X 5/8" (15.9 mm) FSW 4' (1219 mm) 8' (2438 mm)
ND SO FFIT BOARD
® 1/2" x resistance to moisture and
GOLD BO BRAND D sagging required to meet Sta-Smooth thru
SOFFIT BOAR
® 1/2" x 8
GOLD BOND BRAND IT BOARD 1/2" x 8 protected outdoor conditions. 12' (3658 mm)
SO FF ®

GOLD BOND BRAND D Refer to page 71.

SOFFIT BOAR
® 1/2" x 8' T
GOLD BOND BRAND
ND SO® FFIT BOARD 1/2" x 8' T
GOLD BO BRAND D
®
SOFFIT BOAR 1/2" x 8' TE
GOLD BOND BRAND IT BOARD
®
SO FF
GOLD BOND

Gold Bond BRAND Fire-Shield Type X 1" (25.4 mm) FSW 2' (610 mm) Custom Cut
Shaftliner is used as a Beveled 7' (2134 mm)
component in shaftwall Edges thru
systems, in area separation 14' (4267 mm)
walls and in solid gypsum
partitions. The product has
moisture resistant green paper
on both faces. Refer to pages
73, 110, 124 and 140.

Gold Bond BRAND Fire-Shield Type X 1" (25.4 mm) FSW 2' (610 mm) Custom Cut
Shaftliner XP is used as a Beveled 7' (2134 mm)
component in shaftwall Edges thru
systems, area separation 14' (4267 mm)
walls and solid laminated
gypsum partitions. The
product has moisture/
mold/mildew resistant purple
paper on both faces. Refer to
page 74, 110, 124, and 140.

Gold Bond BRAND High Flex Regular 1/4" (6.3 mm) 4' (1219 mm) 8' (2438 mm)
Gypsum Board is specifically Eased thru
1/4 designed for radius 10' (3048 mm)
BRAND WALLBOARD ® 1/4" construction such as curved
HIGH FLEX BRAND walls, archways and
FLEX WALLBOARD ® 1/4" x
HIGH BRAND WALLBOARD
® 1/4" x 8 stairways. It can be used for
HIGH FLEX BRAND both concave and convex
WALLBOARD
® 1/4" x 8
HIGH FLEX BRAND surfaces. 1/4" High Flex is
FLEX WALLBOARD
® 1/4" x 8'
HIGH
BRAND WALLBOARD
® 1/4" x 8' E typically applied in double
HIGH FLEX BRAND layers. Refer to page 75.
®
WALLBOARD 1/4" x 8' EE
HIGH FLEX BRAND
®
W ALLBOARD
HIGH FLEX

60 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC

Description Core Thickness/Type Width/Edge Lengths

Gold Bond BRAND High Strength Regular 1/2" (12.7 mm) 4' (1219 mm) 6' (1828 mm)
Ceiling Gypsum Board is Tapered thru
1/2
designed to resist sagging 16' (4876 mm)
BRAND CEILING BO
ARD 1/2" equal to 5/8" gypsum board.
TH ™
HIGH STRENG ™ BRAND CEILING BOARD 1/2" x Installed perpendicular to
TH
HIGH STRENG ™ BRAND CEILING BOARD 1/2" x 1 framing, span can be up to
ST RENG TH
HIGH BRAND CEILING BO
ARD 1/2" x 12 24" o.c. Can be decorated
TH ™
HIGH STRENG ™ BRAND CEILING BOARD 1/2" x 12 with spray textures and will
TH
HIGH STRENG ™ BRAND CEILING BOARD 1/2" x 12' support insulation. Refer to
TH
HIGH STRENG ™ BRAND CEILING BOARD 1/2" x 12' T page 77.
TH
HIGH STRENG ™ BRAND CEILING BOARD
TH
HIGH STRENG

Gold Bond BRAND Hi-Abuse XP Regular 5/8" (15.9 mm) FSW 4' (1219 mm) 8' (2438 mm)
Fire-Shield Gypsum Board is Square thru
designed for use in areas where or 12' (3657 mm)
surface durability and Tapered
indentation resistance are major
concerns. The product is
manufactured with a mold and
fire resistive Type X gypsum
core encased in heavy smooth
abrasion resistant, mold/mildew
resistant purple paper on the
face side and heavy
mold/mildew resistant liner
paper on the back side. Refer
to page 78.

09 29 00
Gold Bond BRAND Hi-Impact XP Type X 5/8" (15.9 mm) FSW-5 4' (1219 mm) 8' (2438 mm)
Fire-Shield Gypsum Board is thru
designed for use in areas Tapered 12' (3657 mm)
where impact/penetration
resistance is a major concern.
The product is manufactured
with a mold, moisture and fire
resistant Type X gypsum core
encased in heavy smooth
abrasion resistant, moisture,
mold/mildew resistant purple
paper on the face side and
heavy mold/mildew resistant
liner paper on the back side. A
fiberglass mesh is embedded in
the board to provide additional
impact/penetration resistance.
Refer to page 81.

Gold Bond BRAND Soundbreak Regular 5/8" (15.9 mm) 4' (1219 mm) 8' (2438 mm)
Gypsum Board is an Tapered thru
acoustically enhanced 12' (3658 mm)
gypsum board used in the
contruction of high rated STC
wall assemblies. This 5/8"
thick gypsum board consists
of a layer of viscoelastic
damping polymer
sandwiched between two
pieces of enhanced high
density mold resistant
gypsum board, providing
constrained layer damping.
Refer to page 84.

NATIONAL GYPSUM BOARD PRODUCTS 61

 Description Core Thickness/Type Width/Edge Lengths

Gridstone BRAND Ceiling Panels Type X 1/2" (12.7 mm) FSW-G 2' (610 mm) 2' (610 mm)
have a fire resistant Fire- 2' (610 mm) 4' (1219 mm)
Shield G, type X core with a Square
2-mil textured vinyl laminate
surface suited for interior
or exterior application in
exposed grid systems.
Refer to page 86.

Gridstone BRAND CleanRoom Type X 1/2" (12.7 mm) FSW-G 2' (610 mm) 2' (610 mm)
Panels are designed for areas 2' (610 mm) 4' (1219 mm)
requiring high levels of air Square
cleanliness for airborne
particulate. Boards are sealed
on face, back and long edges
with a 2-mil rigid vinyl film
and exposed edges are factory
sealed with durable coating
providing a completely sealed
panel. Refer to page 87.

Gridstone BRAND Hi-Strength Regular 5/16" (7.9 mm) 2' (610 mm) 2' (610 mm)
Ceiling Panels have a non- 2' (610 mm) 4' (1219 mm)
combustible high strength sag Square
resistant gypsum core with a
2-mil textured vinyl laminate
surface suited for interior or
exterior application in exposed
grid systems. Refer to page 88.

62 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC

METRIC CAPABILITIES GUIDELINES FOR Gypsum board that has visi- LIMITATIONS
The Federal Government has PREVENTION OF MOLD ble mold growth must not
be used. 1. Maximum stud spacing for
mandated that each federal GROWTH ON GYPSUM single layer application of
agency make a transition to BOARD Gypsum board on walls must 1/2" and 5/8" gypsum board
the use of metric units in Gypsum board does not gen- be applied with a mini- is 24" o.c. If 3/8" gypsum
all federal procurement, erate or support the mum 1/4" (6.35 mm) gap board is used, it must be
grants and business-related growth of mold when it is between the gypsum applied in two layers, with
activities. National properly transported, board and the floor. the second layer adhesively
Gypsum Company, in stored, handled, installed, Gypsum board must not be applied; 24" o.c. stud spac-
complying with this order, and maintained. However, applied over building ing may be used.
provides a full line of gyp- mold spores are present materials where condi- 2. Where long, continuous runs
sum board products in everywhere and when tions exist that are favor- of this wall system are
“hard” metric dimensions conditions are favorable, able to mold growth. employed, control joints must
with regard to width and mold can grow on practi- be provided every 30' or less.
length. Standard board cally any surface. Maintenance Following
offerings are made in the Observing these guide- Application 3. Where structural movement
width of 1200 mm and a lines will help minimize Essential elements of sound may impose direct loads on
length of 3600 mm. Job the potential for mold weather tight building these systems, isolation
size lengths are available growth on gypsum board. envelope must be properly details are required.
on a special order basis Gypsum board must be maintained, such as the 4. Partitions should not be used
requiring minimum orders kept dry to prevent the roof, sealants, windows, where frequently exposed to
and extended lead times. growth of mold. etc. excessive moisture unless all
Contact your local Transportation and Receiving Immediate and appropriate surfaces are waterproofed.
National Gypsum remediation measures 5. To prevent weakening due
Company representative for Gypsum board must be pro-
tected during transit with a must be taken as soon as to calcining, gypsum board
further information. water leaks or condensa- should not be exposed to
Thickness of gypsum board weather-tight cover in
good condition. tion sources are identified. temperatures over 125˚F
will be “soft” converted to Routine cleaning and mainte- (52˚C) for extended periods
the metric equivalent. Plastic shipping bags are of time.
intended to provided pro- nance operations must be
ENVIRONMENTAL performed so as to prevent 6. Gypsum board joints on sin-
CONDITIONS tection during transit only
and must be promptly saturation of the gypsum gle layer, or the face layer
Maintain a room temperature removed upon arrival of board. on two layer applications,
of not less than 40˚F (4˚C) the load. Failure to Additional Sources of shall not occur within 12" of

09 29 00
during application of gyp- remove the shipping bag Information the corners of door frames
sum board except when can increase the likeli- The following Web sites pro- unless control joints are
adhesive is used for the hood of developing condi- vide information and rec- installed at the corners.
attachment of gypsum tions favorable to the ommendations for treating 7. When gypsum board abuts
board. For the bonding of growth of mold. mold growth; other sites concrete floors, cut board to
adhesive, joint treatment, also provide similar sug- allow for 1/8" to 1/4" clear-
texturing, and decoration, Storage and Handling
gestions. ance between board and
the room temperature shall Gypsum board must be floor to prevent potential
be maintained at least at stored in an area that pro- California Indoor Air Quality
Program at wicking.
50˚F (10˚C) for 48 hours tects it from adverse
prior to application and weather conditions, con- http://www.cal-iaq.
continuously thereafter densation, and other forms org/iaqsheet.html
until completely dry. of moisture. Federal Emergency
Note 1: Precaution–When a Job site conditions that can Management Agency at
temporary heat source is expose gypsum board to http://www.fema.gov/
used, the temperature shall water or moisture must be pdf/hazards/fststpbr.html
not exceed 95˚F (35˚C) in avoided. New York City Department
any given room or area. Gypsum board must be of Health at
Note 2: Precaution–Maintain delivered to the job site as http://www.ci,nyc.ny.
adequate ventilation in the near to the time it will be us/html/doh/html/epi/
working area during instal- used as possible. moldrpt1.html
lation and curing period. Application U. S. Environmental
Protect gypsum board products Provisions must be made to Protection Agency at
from direct exposure to rain, keep gypsum board dry http://www.epa.gov/
snow, sunlight, or other throughout application. iedweb00/pubs/
excessive weather condi- moldresources.html
tions. GA-238, Copyright Gypsum
Association

NATIONAL GYPSUM BOARD PRODUCTS 63

GOLD BOND® BRAND GRIDMARX®
DESCRIPTION easily with no bleed-
through using standard
paint products.
Gold Bond ® BRAND Gypsum
Board comes standard with Vertical Application - In a ver-
GridMarX™ guide marks, tical application, GridMarX
printed on the paper sur- serve as a guide mark to
face. These guide marks help identify the exact
align with standard build- location of framing mem-
ing dimensions and help to bers behind the gypsum
quickly identify fastener board, eliminating the
lines for stud and joist need for field applied
framing. Using GridMarX, vertical lines.
accurate cuts can be made Horizontal Application - In a
without having to draw horizontal application,
lines. GridMarX also assist GridMarX serve as a
with quick identification of reference mark to help
nail/screw pattern. identify the location of
GridMarX guide marks run the framing members behind
machine direction of the the gypsum board. (If fram-
board at five points in 4" ing member is located 2" to
increments. Marks run the right of the GridMarX
along the edge in both at the top edge of the
tapers and at 16", 24" and board, it will be located 2"
32" in the field of the to the right down the face
board. The marks cover of the board.)

DETAILS

GRIDMARX —
VERTICAL WALL APPLICATION

GRIDMARX — HORIZONTAL WALL

Studs in AND CEILING APPLICATION
example are
24" o.c.

GridMarX
spaced
4" apart

GridMarX Represents a pipe or wiring

spaced Studs in example
4" apart are 16" o.c.

64 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC
Gold Bond® BRAND Gypsum Board
DESCRIPTION TECHNICAL DATA RECOMMENDATIONS
Gypsum Board is the name for Fire and sound ratings for Examine and inspect materials with edges of opening unless
a family of board products building systems utilizing to which gypsum board is to control joints will be
consisting of a gypsum board are dependent be applied. Remedy all installed at these points. End
noncombustible core, on the core type and defects prior to installation of joints shall be staggered, and
primarily of gypsum, with a thickness of the gypsum drywall. Any defects in the joints on opposite sides of a
paper surfacing on the face, board, its application in finished installation due to partition shall not occur on
back and long edges.* conjunction with the misaligned framing or other the same stud.
component parts, and the cause will be the Gypsum board shall be held in
The popularity of gypsum board manner in which it is
results from a number of responsibility of the work firm contact with the framing
applied. performed under that section member while fasteners are
factors. First, it takes virtually
any decoration – from paint Tests for fire resistance and of the specification and such being driven. Fastening shall
or textures to vinyl and sound transmission, defects shall be remedied proceed from center portion
paper laminates. It also lends performed by independent under that section of the of the board toward the
itself to creative shaping of laboratories, have resulted in specification. edges and ends. Fasteners
interior surfaces, allowing specific ratings for walls/ Gypsum board shall be applied shall be set with the heads
the maximum in design partitions; floor/ceiling first to ceiling at right angles slightly below the surface of
flexibility. Gypsum board is assemblies; shaftwalls, to framing members, then to the board in a dimple
an economical alternative to stairwells and area walls. Boards of maximum formed by the hammer or
other products. Because it is separation walls; and practical length shall be used power screwdriver. Care
lightweight, it is easy to columns. For maximum fire so that an absolute minimum shall be taken to avoid
handle for speedy resistance and sound control, number of end joints occur. breaking the face paper of
installation. With its natural double layer construction is Board edges shall be brought the gypsum board.
properties, it is durable yet generally recommended into contact with each other Improperly driven nails or
easy to repair. In addition, since the additional mass but shall not be forced into screws shall be removed.
gypsum board’s fire further retards heat and noise place. See page 63, Environmental
resistance and sound control penetration. Conditions and Limitations.
Gypsum board joints at
capabilities further Gypsum board can be installed openings shall be located so
demonstrate its desirability to both metal and wood that no end joint will align
in building systems. framing using nails, screws
Ever conscious of the or adhesives in combination
environmental challenges with nails or screws. In many
we face in today’s world, instances, the application CURVED SURFACES
National Gypsum produces will dictate which fastening To apply gypsum board over a curved surface, place a stop at one end
its gypsum board with 100 method is appropriate. of the board and then gently and gradually push on the other end,

09 29 00
percent recycled paper on Control joints may be necessary forcing the center against the framing until the curve is complete.
both the face and back. to prevent cracking in the Shorter radii than shown in the table may be obtained by moisten-
Gold Bond gypsum board is gypsum board facing of ing the face and back papers of the board with water, stacking on a
available with a variety of drywall systems, especially flat surface, and allowing the water to soak into the core for at least
edge configurations. For easy in areas where structural one hour. When the board is dry it will regain its original hardness.
joint finishing, the tapered elements such as slabs, Gypsum board may be applied to curved surfaces in accordance with
edge is preferred to provide columns or exterior walls the following:
a monolithic surface. Where can bear directly on non-
joints will be exposed, load-bearing partitions. To GYPSUM BOARD BENDING RADII
square or beveled edges relieve the stresses which
occur as a result of Thickness Bending Lengthwise Bending Widthwise
should be considered.
National Gypsum also movement induced by 1/4" (6.4 mm) 5'-0" (1524 mm) 15'-0" (4572 mm)
manufactures gypsum board changes in moisture, 3/8" (9.4 mm) 7'-6" (2286 mm) 25'-0" (7620 mm)
with proprietary edge temperature or both, control 1/2" (12.7 mm) *10'-0" (3048 mm)
configurations made to joints are required in both 5/8" (15.9 mm) 15'-0" (4572 mm)
accommodate a variety of partitions and ceilings.
wall systems and finishing GYPSUM BOARD *Bending two layers of 1/4" (6.4 mm) board successively will permit a bending
techniques. INSULATING PROPERTIES radius shown for 1/4" (6.4 mm) board.
*GA-216 For purposes of calculating Note: To achieve tighter bending radii, use Gold Bond 1/4" High
Fire and sound ratings for “U” values, the “C” factor for Flex Gypsum Board. See page 75 for additional information and
building systems utilizing 1" gypsum board is 1.2; 1/4" High Flex minimum bending radii chart.
gypsum board are Resistance “R” for 3/8" board
dependent on the core type is .32; for 1/2" board .45; for SURFACE BURNING CHARACTERISTICS
and thickness of the gypsum 5/8" board .56 and for 1" (Fire Hazard Classification) Tested in accordance with ASTM E 84
board .83.
Gypsum Gypsum Durasan
WEIGHTS Board Sheathing All Standard Patterns
1/4" Regular - 1.2 lbs/SF Flame Spread Index 15 20 25 or less
3/8" Regular - 1.2 lbs/SF
1/2" Regular - 1.6 lbs/SF Smoke Developed 0 0 50 or less
SPECIFICATIONS
THE FOLLOWING PARAGRAPHS ARE FOR INSERTION INTO SECTIONS OF GENERIC SPECIFICATIONS OR GENERIC/PROPRIETARY SPECIFICATIONS COVERING GYPSUM BOARD
PRODUCTS. THE NATIONAL GYPSUM PRODUCT NAME FOLLOWS THE GENERIC DESCRIPTION IN PARENTHESES.

PART 2 PRODUCTS 2.01 MATERIALS

A. Regular Gypsum Board: A gypsum core board that is fire resistant and surfaced with paper on front/back and long edges and complies with
ASTM C 1396.
1. Thickness: 1/4", 3/8", 1/2" (Gold Bond BRAND Gypsum Board) 3. Length: 6' through 16'.
2. Width: 4'. 4. Edges: Square, Tapered, or Beveled Tapered (Sta-Smooth Edge).
PART 3 EXECUTION 3.01 INSTALLATION
A. General: In accordance with the manufacturer’s recommendations, National Gypsum Company “Gypsum Construction Guide.”

NATIONAL GYPSUM BOARD PRODUCTS 65

Gold Bond® BRAND Fire-Shield® Gypsum Board
DESCRIPTION TECHNICAL DATA WEIGHTS Gypsum board joints at
1/2" Type C - 1.9 lbs/SF openings shall be located
Gold Bond BRAND Fire-Shield
® ®
SYSTEM BURNING so that no end joint will
Gypsum Board was CHARACTERISTICS 5/8" Type X - 2.2 lbs/SF align with edges of
developed to work in opening unless control
combination with other ASTM E84 5/8" Type C - 2.2 lbs/SF
joints will be installed at
products in an assembly to Flame Spread: 15 For fire safety information, go to these points. End joints
retard heat transfer through Smoke Developed: 0 www.nationalgypsum.com. shall be staggered, and
the assembly. Fire-Shield joints on opposite sides of
gypsum boards are made a partition shall not occur
with cores formulated to According to ASTM C 1396, RECOMMENDATIONS
the standard for gypsum on the same stud.
offer greater fire resistance
than regular gypsum board. board, type X gypsum Gypsum board shall be held
Examine and inspect materials in firm contact with the
Generically, these fire board must provide at least: to which gypsum board is
resistant boards that are a one-hour fire resistance framing member while
to be applied. Remedy all fasteners are being driven.
used to delay heat transfer rating for 5/8" board, or a defects prior to installation
to structural members are 3/4-hour fire resistance Fastening shall proceed
of drywall. Any defects in from center portion of the
designated as “type X” rating for 1/2" board the finished installation due
products. applied in a single layer board toward the edges
to misaligned framing or and ends. Fasteners shall
nailed on each face of other cause will be the
The Gypsum core of Fire- load-bearing wood framing be set with the heads
Shield Gypsum Board works responsibility of the work slightly below the surface
members when tested in performed under that
as a natural “sprinkler accordance with the of the gypsum board in a
system.” Gypsum naturally section of the specification dimple formed by the
requirements of Methods of and such defects shall be
contains about 21 percent Fire Test of Building hammer or power
water. When the board is remedied under that screwdriver. Care shall be
Constructions and section of the specification.
heated, the water in the Materials (ASTM taken to avoid breaking the
core begins to evaporate designation E 119). Gypsum board shall be face paper of the gysum
and is released as steam, applied first to ceiling at board. Improperly driven
retarding heat transfer. right angles to framing nails or screws shall be
Fire-Shield gypsum board For additional fire protection,
Gold Bond Fire-Shield C members, then to walls. removed.
remains noncombustible. Boards of maximum
However, as shrinkage products are formulated See page 63, Environmental
with a mineral core practical length shall be Conditions and
occurs because of the loss used so that an absolute
of water volume, cracks additive which expands Limitations.
when subjected to heat minimum number of end
occur which permit joints occur. Board edges
passage of fire and heat. which aids in holding the
gypsum board together. shall be brought into
To lessen this process, contact with each other
Fire-Shield gypsum board Fire-Shield gypsum boards but shall not be forced
is formulated by adding also can be used as into place.
noncombustible fibers column protection,
to the gypsum to help delaying the rapid transfer SPECIFICATIONS
maintain the integrity of of heat to reduce the
the core as water volume likelihood that structural
is lost while providing THE FOLLOWING PARAGRAPHS ARE FOR INSERTION INTO SECTIONS OF
members will lose strength GENERIC SPECIFICATIONS OR GENERIC/PROPRIETARY SPECIFICATIONS
greater resistance to heat and fail to carry the COVERING GYPSUM BOARD PRODUCTS. THE NATIONAL GYPSUM
transfer. intended load. PRODUCT NAME FOLLOWS THE GENERIC DESCRIPTION IN PARENTHESES.
FIRE RESISTANCE RATINGS PART 2 PRODUCTS
Fire resistance ratings 2.01 MATERIALS
represent the results of
tests on assemblies made A. Fire-Resistant Gypsum Board: A gypsum core gypsum
up of specific materials in a board with additives to enhance fire resistance of the core
specific configuration. and surfaced with paper on front, back, and long edges
When selecting and complying with ASTM C 1396, type X.
construction designs to 1. Thickness: 1/2" (Gold Bond BRAND Fire-Shield C
meet certain fire resistance Gypsum Board), 5/8" (Gold Bond BRAND Fire-Shield
requirements, caution must Gypsum Board), or 5/8" (Gold Bond BRAND Fire-Shield
be used to insure that each C Gypsum Board)
component of the assembly 2. Width: 4'
is the one specified in the 3. Length: 6' through 16'
test. Further, precaution (1/2" Fire-Shield C Gypsum Board,
should be taken that 5/8" Fire-Shield Gypsum Board)
assembly procedures are in Length: 8' through 14'
accordance with those of
the tested assembly. (5/8" Fire-Shield C Gypsum Board)
(For copies of specific tests, 4. Edges: Square, Tapered, or Beveled Tapered
call 1-800-NATIONAL.) (Sta-Smooth Edge)
PART 3 EXECUTION
3.01 INSTALLATION
A. General: In accordance with the manufacturer’s
recommendations, National Gypsum Company “Gypsum
Construction Guide.”

66 NATIONAL GYPSUM WALLBOARD PRODUCTS

 09 29 00/NGC
Gold Bond® BRAND Sta-Smooth® Gypsum Board
DESCRIPTION Alignment – Sta-Smooth
board with its unique edge
(either configuration)
Sta-Smooth is a drywall allows for easy alignment
system offering maximum of the boards in the same
joint strength and easy way as conventional
application. It can be used tapered edge board. The
in any gypsum drywall taper is scientifically
system where conventional designed to reduce
types of gypsum board are crowned joints.
recommended. This
system features Sta-Smooth Stronger Bond – The bonding
Brand gypsum board with a area of the Sta-Smooth
unique edge. The two edge Joint Compounds are
configurations relieve joint increased with the “V”
deformity problems caused edge boards. The Sta-
by twisted framing, Smooth Joint Compound
damaged gypsum board used to bond the joint tape
edges, poor alignment and and fill the joints is a
extremes in humidity and hardening-type, high
temperature. Regular Sta- density material
Smooth Boards are with low shrinkage
available in 1/2" characteristics. Easier Scheduling – Taping
thicknesses, 4' wide and in Strength – The Sta-Smooth with Sta-Smooth Com- TECHNICAL DATA
customary gypsum board joint shape and the joint pounds and applying the
lengths. The Sta-Smooth compound are developed first finishing coat, even SURFACE BURNING
System is also composed of to provide greater mass before the Sta-Smooth used CHARACTERISTICS
ProForm BRAND Sta-Smooth and integral bond for for taping has dried, allows ASTM E-84
Joint Compounds, a increased strength. Sta- easier job scheduling for Flame Spread: 15
hardening-type taping Smooth Joint Compounds the drywall contractor and
compound and regular Smoke Developed: 0
add considerable strength finisher. This is particularly
Gold Bond tape and which is unaffected by advantageous under slow
finishing compounds. the amount of moisture drying conditions. WEIGHTS
ADVANTAGES normally introduced into a 1/2" Regular - 1.6 lbs/SF
structure that could cause 5/8" Type X - 2.2 lbs/SF
Improved Durability – The ridging or beading with

09 29 00
Sta-Smooth System 5/8" Type C - 2.2 lbs/SF
conventional joint
produces a smooth, flat, compounds.
durable surface that relieves
beading, ridging and other Cost – If application DETAILS
joint deformity problems. techniques are followed as
recommended, the Sta-
Greater Speed – All flat Smooth System should cost
joints in the Sta-Smooth THE SECRET IS IN THE SHAPE OF THE JOINT AND THE
no more and can cost STRENGTH OF THE COMPOUND
System are filled and taped considerably less than
with any Sta-Smooth conventional gypsum
Compounds all in one easy board drywall joint
operation, the same as finishing. The initial
conventional gypsum board savings are immediately
application methods. Sta- demonstrated with reduced
Smooth Compounds or travel time that results from
regular compounds can be this perfected 2-trip, 3-step Standard tapered-beveled edge configuration.
used to tape inside corners, joint finishing system.
cornerbeads, and spot Future cost savings will be
fasteners. Regular ProForm realized with reduced
finishing compounds or callbacks.
Sta-Smooth compounds are
used for the remaining Better Butt Joints –
finishing coats. Recommended with the Round edge configuration.
Sta-Smooth System is an
Easier Handling – The improved technique for
improved edge designs on providing a smoother, The Sta-Smooth System produces a superior joint because the
Sta-Smooth Boards makes flatter, stronger butt joint. Sta-Smooth Compounds are a hardening-type compound that
handling easier with greater Although this technique is not affected by humidity once it has hardened and dried. It
comfort to the hands. could be used in also maintains its hard core even with moisture added by the
No Special Equipment – All conventional drywall use of the regular joint compounds for the finishing work.
conventional fasteners, work and produce better Sta-Smooth Compound firmly bonds the tape to the board
adhesives, and gypsum butt joints, it is further and the board “V” edges to each other making a strong,
board application tools (T- improved by the use of the rigidized joint.
squares, knives, etc.) can be high strength Sta-Smooth Consult your local National Gypsum sales representative for
used to apply Sta-Smooth Compound. edge configuration available in your market.
Boards. Nothing new to
buy.

NATIONAL GYPSUM BOARD PRODUCTS 67

 RECOMMENDATIONS SPECIFICATIONS

Note: Sta-Smooth Gypsum Board may be used with any of the THE FOLLOWING PARAGRAPHS ARE FOR INSERTION INTO SECTIONS OF GENERIC
Gypsum Drywall Systems described in this Gypsum SPECIFICATIONS OR GENERIC/PROPRIETARY SPECIFICATIONS
Construction Guide. COVERING GYPSUM BOARD PRODUCTS. THE NATIONAL GYPSUM PRODUCT
NAME FOLLOWS THE GENERIC DESCRIPTION IN PARENTHESES.
All specifications for the application of gypsum board as
described in this literature may also serve for the application PART 2 PRODUCTS
of Sta-Smooth Boards. Any deviation from these 2.01 MATERIALS
specifications is as indicated below.
A. Gypsum Board: A gypsum core wall board surfaced with
A. BOARD APPLICATION: Position each Sta-Smooth Board so paper on front, back, and long edges and complying with
that the long edges are in light contact with the edges of the ASTM C 1396 (Gold Bond BRAND Gypsum Board).
previous boards. All boards positioned to form butt joints
should have a gap approximately 1/16" between the board 1. Thickness: 1/2"
ends. This spacing can be assured by driving 2 extra fasteners 2. Width: 4'
at the end of the board to act as temporary spacers before 3. Length: 6' through 16'
abutting the next board. When the boards are fastened in 4. Edge: Beveled Tapered (Sta-Smooth Edge)
place, drive the temporary spacers flush with surface. When B. Fire-Resistant Gypsum Board: A gypsum core wall board with
gypsum board is applied horizontally, recess all butt joints on additives to enhance fire resistance of the core and
the job by shimming the face of the studs (or joists), on both surfaced with paper on front, back, and long edges and
sides of the studs (or joists), on which the joint will fall. The complying with ASTM C 1396, type X.
shim can be pressed paper, thickness of building felt or other
suitable materials not to exceed 1/16" thickness and as wide as 1. Thickness: 1/2" (Gold Bond BRAND Fire-Shield C
the stud or joist. It should be 6" longer than the butt joint and Gypsum Board), 5/8" (Gold Bond BRAND Fire-Shield
applied to the face of the stud or joist with staples or nails Gypsum Board), or 5/8" (Gold Bond BRAND Fire-Shield C
allowing the shim to extend under the edge of the abutting Gypsum Board)
boards of gypsum board to assure that the board facings 2. Width: 4'
remain on the same plane. 3. Length: 6' through 16'
B. CORNERS AND OPENINGS: All exterior corners and all (1/2" Fire-Shield C Gypsum Board,
openings that require joint treatment should receive 5/8" Fire-Shield C Gypsum Board)
protective reinforcement of ProForm Multi-Flex Tape Bead or Length: 8' through 14'
Steel Cornerbead or Steel Casing Bead as required. (5/8" Fire-Shield C Gypsum Board)
C. TREATMENT OF JOINTS*: All flat Sta-Smooth gypsum board 4. Edge: Beveled Tapered (Sta-Smooth Edge)
joints are taped with ProForm BRAND Sta-Smooth Compounds, 5. Edge: Rounded (Sta-Smooth Edge)
making sure that a sufficient amount of compound is forced C. Exterior Gypsum Soffit Board: A gypsum core soffit board
into the “V” joint and spread under the tape to form a solid with additives to enhance the sag resistance of the core;
foundation for the finishing coats.** surfaced with water repellent paper on front, back, and
1. As soon as the Sta-Smooth Joint Compound used for taping has long edges; and complying with ASTM C 1396
hardened, the first finishing coat can be applied even when (Gold Bond BRAND Exterior Soffit Board).
the Sta-Smooth Compound is still wet. 1. Thickness: 1/2"
2. When the first finishing coat is completely dry the second 2. Width: 4'
finishing coat can be applied. Any of the ProForm Joint 3. Length: 8' through 12'
Compounds may be used for the finishing coats. 4. Edge: Beveled Tapered (Sta-Smooth Edge)
3. Sta-Smooth Joint Compounds are recommended for the first D. Fire-Resistant Exterior Gypsum Soffit Board: A gypsum core
coat on nail or screw heads. Regular finishing compounds soffit board with additives to enhance the fire-resistance
may be used for subsequent spotting of the fasteners. Sta- and the sag resistance of the core; surfaced with water
Smooth Compounds are also recommended for the first coat repellent paper on front, back, and long edges; and
on cornerbead and followed by one or more finishing coats complying with ASTM C 1396, type X
as required of regular ProForm Joint or Topping Compounds. (Gold Bond BRAND Fire-Shield Exterior Soffit Board).
4. The inside corners may be treated with any of the ProForm 1. Thickness: 5/8"
Joint Treatment Compounds recommended for taping. If a 2. Width: 4'
two-trip joint treatment operation is planned, the inside 3. Length: 8' through 12'
corners are taped with Sta-Smooth Joint Compounds. This 4. Edge: Beveled Tapered (Sta-Smooth Edge)
will permit finishing one side of the inside corners the first
day. Cornerbead is treated with Sta-Smooth Compounds if a PART 3 EXECUTION
two-trip operation is employed. 3.01 INSTALLATION
*Alternate Method: When mechanical tools are to be used for A. General: In accordance with the manufacturer’s
taping joints, Sta-Smooth Compounds are used to fill the “V” recommendations, National Gypsum Company “Gypsum
joint only. Other ProForm Joint Compounds are then used to Construction Guide.”
bed the tape and finish the joints. (See page 69.)
**Sta-Smooth, Sta-Smooth HS and Sta-Smooth Lite Joint
Compounds are recommended for pre-fill or tape/bed coat
operations in the Sta-Smooth system.
See page 63, Environmental Conditions and Limitations.

68 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC
INSTALLATION
APPLICATION AND FASTENING
Sta-Smooth Boards may be nailed, screwed or adhesively applied to wood studs or
furring, or screwed or adhesively applied to steel studs or furring, using conventional
type and length of fastener. All fasteners shall be applied a minimum of 3/8"
(maximum 1/2") from the edges and ends of each board. Then treat the joints in three
simple steps.
CONVENTIONAL TAPING AND FINISHING
1. Fill Joint And Bed Tape Simultaneously
All flat gypsum board joints are to be filled and taped in one operation with ProForm
BRAND Sta-Smooth Compounds, using ProForm Paper Tape in the conventional
manner. When Sta-Smooth HS tape is used, the self-adhering fiberglass mesh tape is
firmly pressed to the gypsum board, spanning the joints. Sta-Smooth Compounds can
Application And Fastening then immediately be applied to the joints. The compound must be forced through the
tape to fill the channel formed by the “V” edges of the Sta-Smooth gypsum board. All
inside corners may be taped using regular ProForm compounds. Sta-Smooth
Compounds are used for the first coat on nail or screw heads and will decrease
problems with fastener imperfections. Inside angles, first and second finishing coats
may be done using regular ProForm joint compounds.
2. First Finishing Coat
As soon as the Sta-Smooth Compound used for taping has hardened, the first finishing
coat may be applied on the flat joints even before it is dry. Any ProFrom joint
compound may be used for this operation. A second coat may be applied at this time
to nail or screw heads, one coat on cornerbead if Sta-Smooth Compound was used for
the first coat.
3. Second Finishing Coat
1. Fill Joint And Bed Tape As soon as the compounds used for the previous steps have thoroughly dried, a second
Simultaneously finishing coat is applied to all flat joints using ProForm Joint Compound or Topping
Compound. A third coat is applied over nail or screw heads and on cornerbead as
required. The unfinished side of the inside corners is also finished at this time.
STA-SMOOTH ROUND EDGE REQUIRES PRE-FILLING PRIOR TO BED & TAPING
Application Instructions For Round Edge Sta-Smooth Gypsum Board

09 29 00
1) Mix Sta-Smooth Joint Compound, Sta-Smooth Lite Joint Compound or Sta-Smooth HS
Joint Compound as per bag instructions. Care should be taken to mix no more
compound than can be applied in the designated set time.
2) Pre-fill all joints formed by the abutting round edge Sta-Smooth Gypsum Boards with
Sta-Smooth Compound, Sta-Smooth Lite Joint Compound or Sta-Smooth HS Joint
Compounds using a conventional joint finishing knife. Fill joints, level and wipe off
excess compound to the lowest level of the taper, allowing enough room for
embedding the tape. Allow prefill material to harden prior to application of tape and
2. First Finishing Coat bed coat.
3) Finish joints in the normal manner.
TAPING AND FINISHING WITH MECHANICAL TOOLS
Taping – Taping tools such as the “banjo” and “hopper” types are recommended for
taping the flat joints with Sta-Smooth Compounds and the inside corners with ProForm
regular joint compounds or with Sta-Smooth Compounds. Automatic taping tools are
not recommended for use with hardening-type compounds. Mechanical tools can be
used for taping the inside corners when a ProForm regular joint compound is used.
When automatic taping tools are used for taping the flat joints, the “V” formed by the
edges of Sta-Smooth board on the flat joints and all spaces between the gypsum board
edges on butt joints are prefilled with Sta-Smooth Compounds and allowed to harden
(30 minutes longer than the set time designated on the bag) prior to taping with a
regular ProForm joint compound.
Finishing – Mechanical type finishing tools can be used in the normal manner for the
3. Second Finishing Coat finishing operations of the Sta-Smooth System since conventional ProForm finishing
compounds are used.
MIXING INSTRUCTIONS
ProForm BRAND Sta-Smooth Compounds are available in 20, 45, 90 and 210 minute set
times. MIX NO MORE COMPOUND THAN CAN BE APPLIED IN THE DESIGNATED
SET TIME. Contact your National Gypsum Company Representative for availability.
A plastic container is recommended because of its ease in cleaning between batches.
Do not use a wood or aluminum bucket. Add the compound gradually to clean water
while stirring. Note: Use only fresh, clean water suitable for human consumption.
Mix at the ratio of 13-14 pints of water to the 25 lb. bag. Mix the compound free of
lumps with a mechanical mixer or by hand. Mechanical mixing is recommended.
Allow to stand 5 minutes as a “wetting” period and remix to further improve the
working qualities. If a slightly thinner compound is desired, add an additional pint of
water, or less, after the compound is thoroughly mixed.

NATIONAL GYPSUM BOARD PRODUCTS 69

Gold Bond® BRAND XP® Gypsum Board
DESCRIPTION call 1-800-NATIONAL. For XP Gypsum Board can be used as XP Gypsum Board that is to
fire safety information, see a tile backer board in dry areas have a wallcovering applied
Gold Bond BRAND XP
® ® www.nationalgypsum.com.) or areas with limited water to it should be prepared and
Gypsum Board panels MOLD AND MILDEW exposure such as directly primed as described for
consist of a fire-resistant, RESISTANCE behind tile in tub and shower
areas.
painting.
mold and moisture-
resistant gypsum core XP Gypsum Board was XP Gypsum Board can be
designed to provide extra installed on the interior south
SPECIFICATIONS
encased in heavy
moisture/mold/mildew protection against mold face of exterior walls.
and mildew compared to PART 2 PRODUCTS
resistant, 100% recycled XP Gypsum Board should not be THE FOLLOWING PARAGRAPHS ARE
purple paper on the face standard gypsum board used as a backer board FOR INSERTION INTO SECTIONS
and backsides. products. When tested by directly behind tile in tub and OF GENERIC SPECIFICATIONS OR
XP Gypsum Board was an independent lab per shower areas. GENERIC/PROPRIETARY
designed to provide extra ASTM D3273 (“Standard SPECIFICATIONS COVERING
XP Gypsm Board should not be GYPSUM BOARD PRODUCTS. THE
protection against mold Test Method for NATIONAL GYPSUM PRODUCT
and mildew compared to Resistance to Growth of used in areas subject to NAME FOLLOWS THE GENERIC
standard gypsum board constant and/or excessive DESCRIPTION IN PARENTHESES.
Mold on the Surface of moisture and high humidity
products. The face paper Interior Coatings in an 2.01 MATERIALS
is folded around the long such as gang showers, saunas,
Environmental Chamber”), steam rooms and swimming A. Mold-Resistant Gypsum
edges to reinforce and XP Gypsum Board
protect the core, and the pool enclosures. PermaBase Board: A gypsum core wall
achieved a score of 10, BRAND cement board is panel with additives to
ends are square-cut and the best possible score for
finished smooth. Long recommended for these areas. enhance the water resistance
edges of panels are this test. of the core; surfaced with
XP Gypsum Board must be
tapered. Tapered edges The use of XP Gypsum Board stored off the ground and moisture/mold/mildew
allow joints to be treated in in actual installations may under cover. Sufficient risers resistant paper on front,
the normal manner. For must be used to ensure back and long edges and
optimum mold and not produce the same
results as were achieved support for the entire length of complying with ASTM
mildew resistance, the gypsum board to prevent C 1396 (Gold Bond BRAND
National Gypsum in controlled, laboratory sagging.
conditions. No material XP Gypsum Board).
recommends ProForm
BRAND XP Ready Mix or can be considered “mold- XP Gypsum Board must be kept 1. Thickness: 1/2”
ProForm BRAND Sta- proof,” nor is it certain dry to minimize the potential 2. Width: 4'
Smooth/Sta-Smooth Lite that any material will for mold growth. Adequate 3. Length: 8', 10' or 12'
setting compounds. resist mold or mildew care should be taken while 4. Edges: Square or
indefinitely. When used in transporting, storing, applying Tapered
Gold Bond BRAND XP Fire- and maintaining gypsum
Shield® Gypsum Board conjunction with good 5. Mold and Mildew
design, handling and board. For additional
features a type X core to information, refer to the Resistance: Panel score
provide additional fire construction practices, XP Gypsum Association of 10 when tested in
resistance ratings when Gypsum Board can publication, “Guidelines for accordance with ASTM
used in tested systems. provide increased mold the Prevention of Mold D 3273
Gold Bond BRAND XP Fire- resistance versus standard Growth on Gypsum Board” B. Fire-Resistant Mold and
Shield C Gypsum Board gypsum board products. (GA-238-03), which is Mildew-Resistant Gypsum
Panels have a specially As with any building available at www.gypsum.org Board: A gypsum core wall
formulated type X core to material, exposure during under the “Download Free panel with additives to
achieve superior handling, storage, and Gypsum Association enhance the fire resistance
performance when used in installation, and after Publications” section. and water resistance of the
specific fire-rated installation is complete, is core; surfaced with
assemblies where the the best way to avoid the DECORATION
weight and number of moisture/mold/mildew
formation of mold or For best painting results, all resistant paper on front,
gypsum board layers are a mildew. surfaces, including joint
concern. back and long edges and
WEIGHTS compound, should be clean, complying with ASTM
TECHNICAL DATA dust-free and not glossy. To C 1396, type X.
1/2” Regular - 1.75 lbs/SF improve fastener and joint
1/2” Type C - 1.95 lbs/SF concealment, a coat of a 1. Thickness: 1/2” (Gold
SURFACE BURNING 5/8” Type X - 2.4 lbs/SF Bond BRAND XP Fire-
CHARACTERISTICS
quality drywall primer is
recommended to equalize Shield C Gypsum Board),
ASTM E 84 5/8” (Gold Bond BRAND
Flame spread: 15 RECOMMENDATIONS the porosities between the
paper and joint compound. XP Fire-Shield Gypsum
Smoke developed: 0 Exposure to excessive or Board,) 5/8” (Gold Bond
FIRE RESISTANCE RATINGS continuous moisture and The selection of a paint to give Brand XP Fire-Shield C
Fire resistance ratings represent extreme temperatures should the specified or desired Gypsum Board.)
the results of tests on be avoided. XP Gypsum Board finished characteristics is the 2. Width: 4'
assemblies made up of is not recommended where it responsibility of the architect 3. Length: 8', 10', or 12'
specific materials in a will be exposed to temperatures or contractor. 4. Edges: Square or
specific configuration. When exceeding 125˚F (52˚C) for Tapered
selecting construction extended periods of time. 5. Mold and Mildew
designs to meet certain fire MAXIMUM FRAMING SPACING - For Single Layer XP Gypsum Board Resistance: Panel score
resistance requirements, of 10 when tested in
Gypsum Board Gypsum Board Maximum
caution must be used to Thickness Orientation to Framing Framing Spacing
accordance with ASTM
insure that each component D 3273
Ceilings: 1/2" (12.7mm) Parallel 16" (406mm) o.c.
of the assembly is the one 1/2" (12.7mm) Perpendicular 24" (610mm) o.c. PART 3 EXECUTION
specified in the test. Further, 5/8" (15.9mm) Parallel 16" (406mm) o.c. 3.01 INSTALLATION
precaution should be taken 5/8" (15.9mm) Perpendicular 24" (610mm) o.c.
that assembly procedures are Walls: 1/2" (12.7mm) Perpendicular or Parallel 24” (610mm) o.c. A. General: In accordance
in accordance with those of 5/8” (15.9mm) Perpendicular or Parallel 24” (610mm) o.c. with the manufacturer’s
the tested assembly.(For recommendations, National
NOTE: On ceilings to receive hand or spray applied, water based texture material,
copies of specific tests, XP Gypsum Board products shall be applied perpendicular to framing. Gypsum Company “Gypsum
Construction Guide.”
70 NATIONAL GYPSUM BOARD PRODUCTS
 09 29 00/NGC
Gold Bond® BRAND Exterior Soffit Board

DESCRIPTION

Gold Bond® BRAND Exterior Typical uses for sheltered

Soffit Board is designed to exterior ceiling and soffit
provide, in a fire-resistive areas are covered parking
gypsum board, the extra areas, walkways and
resistance to moisture and marquees in commercial
sagging required to meet construction and, in
outdoor conditions. The residential construction,
specially treated gypsum carports, breezeways and
core is covered on both open porches.
sides with water-repellent
paper formed to the Sta-
Smooth edge. Boards are
1/2" (regular) and 5/8" (Fire-
Shield) x 4' x 8' through 12'
lengths.

TECHNICAL DATA
4. METAL FRAMING AND support equal to that of the 8. VENTILATION
FURRING interrupted members. Provide at least 1 sq. ft. of
1. WEIGHTS
A suspended framework for Apply Soffit Board with 1" venting to exterior for each
1/2" Regular - 1.8 lbs/SF support of the ceiling board Type “S” Screws, 12" o.c. 150 sq. ft. of Ceiling/Soffit
5/8" Type X - 2.2 lbs/SF is composed of 1 1/2" cold- max. Board. Vent each enclosed
2. GENERAL rolled steel channels for 5. CONTROL JOINTS bay. If the space above the
main runners and either the ceiling board is not open to
Use longest practical board Furring Channel or the To compensate for the effect areas above or below
lengths to minimize the Steel Stud for cross-furring. of structural movement on habitable rooms, provide
number of butt joints. large ceiling areas, control ventilating area of not less
Position end joints at Space main runners as joints in the Ceiling/Soffit
follows: 4' o.c. max. if than 1/300 of the ceiling
supports, allowing 1/16" to Board are recommended. area. Otherwise, vent in
1/8" between butted ends. Furring Channels are to be These should be E-Z Strip accordance with HUD

09 29 00
When board is applied used, 6' o.c. max. for 2 1/2" Expansion Joints.
Steel Studs, and 8' o.c. max Minimum Property
with long edges parallel to Install E-Z Strip with 1/2" min. Standard No. 4900.1 or in
framing, framing spacing is for 3 5/8" Steel Studs. Main
runners are suspended with staples 6" o.c. Use accordance with local
16" o.c. max. When board additional staples if codes.
is applied with long edges 8 gauge (min.) galvanized
wire spaced 4' o.c. max. necessary for snug contact 9. JOINT TREATMENT
perpendicular to framing, with board. Install joints no
framing spacing may be Secure Furring Channels to more than 30' apart and, if ProForm BRAND Sta-Smooth
up to 24" o.c. max. Drive main runners with 1 1/2" possible, to coincide with Joint Compound is required
fasteners to provide Furring Channel Clips, expansion joints in the roof for filling, taping and
uniform dimples not over alternating sides at each above. Control joints may finishing. Since Sta-Smooth
1/32" deep. intersection, or saddle tie be installed to intersect is a setting material, cut any
with double strands of 16 light fixture or other high points while still wet
3. WOOD FRAMING AND gauge galvanized tie wire.
FURRING openings where stresses are and wet sand as necessary.
Secure Steel Stud furring to usually concentrated. 10. PAINTING
Apply Soffit Board with the main runners with double
long edges at right angles to Wings of “L”, “U”, and “I” The surface of the Soffit Board
strand 16 gauge tie wire shaped areas should always
framing. Use Type “W” 16" o.c. max. For added should be painted with two
1 1/4" Drywall Screws be separated. coats of exterior paint as
rigidity, nest an 8" length
spaced 12" o.c. max. of track at each tie wire 6. INTERSECTION WITH soon as joint compound is
Electric screw gun should location. OTHER BUILDING dry, about one week after
be equipped with ELEMENTS joints are completed.
adjustable depth control Main runners and furring must
have a minimum clearance Allow a minimum 1/4" space
and a #2 Phillips bit. 1 1/2" between ceiling board and
galvanized box nails or between their ends and any
abutting structural element. any intersecting structure.
1 1/2" aluminum nails Do not caulk this space.
spaced 7" o.c. max., may A main runner must be
located within 6" of parallel Install suitable trim
be used if desired. moulding to conceal the
walls. The ends of these
Wood furring 1" x 4" nom. runners must be supported gap or use J Casing Bead
may be used for screw by hangers not more than and flexible sealant.
application of board where 6" from the ends. The
support member spacing 7. BOARD EDGE
closest edge of the furring PROTECTION
does not exceed 24" o.c. member must be no more
Furring 2" x 2" nom. must Install fascia so that its drip
than 2" from the parallel line is at least 1/4" below
be used for nail application wall. At any openings for
of board or when support the Ceiling Soffit Board
vents, light fixtures, etc., molding.
member spacing exceeds that interrupt runners or
24" o.c. but is not greater furring, reinforcement must
than 48" o.c. be provided to maintain

NATIONAL GYPSUM BOARD PRODUCTS 71

 DETAILS

TO ROOF VENT

VENTILATION

J CASING BEAD

FLEXIBLE SEALANT

1/4"

1/4"
CONTROL JOINT
09250B
"A" VIEW "A"
VENTILATOR Scale: 1 1/2" = 1'-0"

EXTERIOR SOFFIT BOARD VENTILATION

09250A
Scale: 1 1/2" = 1'-0"

INSTALLATION SPECIFICATIONS

THE FOLLOWING PARAGRAPHS ARE FOR INSERTION INTO SECTIONS

HANGERS 48" O.C. MAX. OF GENERIC SPECIFICATIONS OR GENERIC/PROPRIETARY
SPECIFICATIONS COVERING GYPSUM BOARD PRODUCTS. THE
1 1/2" C.R. CHANNEL
NATIONAL GYPSUM PRODUCT NAME FOLLOWS THE GENERIC
DESCRIPTION IN PARENTHESES.
PART 2 PRODUCTS
2.01 MATERIALS
A. Exterior Gypsum Soffit Board: A gypsum core soffit
board with additives to enhance the sag resistance
FURRING of the core; surfaced with water repellent paper on
CHANNEL CLIP front, back, and long edges; and complying with
ASTM C 1396 (Gold Bond BRAND Exterior Soffit
Board).
1. Thickness: 1/2"
2. Width: 4'
FURRING
3. Length: 8' through 12'
CHANNEL
4. Edges: Beveled Tapered (Sta-Smooth Edge)
CEILING/SOFFIT BOARD
B. Fire-Resistant Exterior Gypsum Soffit Board: A
gypsum core soffit board with additives to enhance
the fire resistance of the core; surfaced with water
RECOMMENDATIONS repellent paper on front, back, and long edges; and
complying with ASTM C 1396, type X (Gold Bond
Installation of Gold Bond Exterior Soffit Board should be in BRAND Fire-Shield Exterior Soffit Board).
accordance with page 70 of the National Gypsum Company 1. Thickness: 5/8"
“Gypsum Construction Guide.” 2. Width: 4'
A qualified structural engineer should evaluate design, including 3. Length: 8' through 12'
uplift bracing. 4. Edges: Beveled Tapered (Sta-Smooth Edge)
See page 63, Environmental Conditions and Limitations.
PART 3 EXECUTION
3.01 INSTALLATION
A. General: In accordance with the manufacturer’s
recommendations, National Gypsum Company
“Gypsum Construction Guide.”

72 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC
Gold Bond® BRAND 1" Fire-Shield® Shaftliner

DESCRIPTION RECOMMENDATIONS SPECIFICATIONS

Gold Bond® BRAND 1" Fire- Installation of 1" Fire-Shield THE FOLLOWING PARAGRAPHS ARE
Shield Shaftliner panels Shaftliner should be FOR INSERTION INTO SECTIONS
consist of a fire-resistant consistent with methods OF GENERIC SPECIFICATIONS OR
type X gypsum core described in specific GENERIC/PROPRIETARY
encased in a heavy application details for Cavity SPECIFICATIONS COVERING
moisture-resistant green, Shaftwall Systems or H-Stud GYPSUM BOARD PRODUCTS.
100% recycled paper on Area Separation Wall THE NATIONAL GYPSUM
the face and back sides. Systems or other fire-rated PRODUCT NAME FOLLOWS THE
The face paper is folded designs shown in National GENERIC DESCRIPTION IN
around the long edges to Gypsum Company “Gypsum PARENTHESES.
reinforce and protect the Construction Guide.”
core, and the ends are
square-cut and finished Exposure to excessive or PART 2 PRODUCTS
smooth. Long edges of continuous moisture or
standing water and extreme 2.01 MATERIALS
panels are beveled for ease
of installation. temperatures should be A. Fire-Resistant Gypsum
avoided. Shaftliner Board: A
1" Shaftliner panels are gypsum core shaftwall
designed to be used to board with additives to
construct lightweight fire To prevent weakening due to enhance fire resistance of
barriers for cavity shafts calcining, 1" Fire-Shield the core and surfaced with
and area separation walls Shaftliner panels, like any water resistant paper on
in multifamily housing. The gypsum board, should not front, back and long
panels are key components be exposed to temperatures edges; and complying with
in the Cavity Shaftwall over 125˚F (52˚C) for ASTM C 1396, type X
Systems and the I-Stud (Gold Bond BRAND Fire-
and H-Stud Area extended periods of time.
Shield Shaftliner).
Separation Wall Systems.
Not to be used in an unlined 1. Thickness: 1"
2. Width: 2'
air supply duct. 3. Length: 7' through 14'
TECHNICAL DATA 4. Edges: Beveled
Always store Shaftliner Gypsum
SURFACE BURNING Panels flat on a level surface

09 29 00
CHARACTERISTICS and support with properly
ASTM E84 placed risers. Care should be PART 3 EXECUTION
Flame Spread: 15 taken to avoid impact,
unwarranted flexing and 3.01 INSTALLATION
Smoke Developed: 0 subsequent damage to board A. General: In accordance
edges, ends and corners. with the manufacturer’s
WEIGHTS recommendations,
1" Shaftliner - 3.75 lbs/SF National Gypsum
Company “Gypsum
FIRE RESISTANCE RATINGS Construction Guide.”
Fire resistance ratings repre-
sent the results of tests on
assemblies made up of
materials authorized by
National Gypsum in specific
configurations. When
selecting construction
designs to meet certain fire
requirements, caution must
be used to ensure that each
component of the assembly
is the one specified in the
test.
Further, precaution should be
taken that assembly
procedures are in accor-
dance with those of the
tested assembly. (For copies
of specific tests, call 1-800-
NATIONAL.)

NATIONAL GYPSUM BOARD PRODUCTS 73

 Gold Bond® BRAND 1" Fire-Shield® Shaftliner XP®
DESCRIPTION
Shaftliner XP™ Gypsum Panels When tested by an Care should be taken to
consist of a mold and fire- independent lab per ASTM avoid impact, unwarranted
resistant type X gypsum D3273 (Standard Test flexing and subsequent
core encased in a heavy Method for Resistance to damage to board edges,
moisture/mold/mildew- Growth of Mold on the ends and corners.
resistant, 100% recycled Surface of Interior Coatings Shaftliner XP may be
purple paper on the face in an Environmental substituted for National
and back sides. Shaftliner Chamber), Shaftliner XP Gypsum’s Gold Bold
XP was designed to achieved a score of 10, the BRAND Fire-Shield Shaftliner
provide extra protection best possible score for this in Cavity Shaftwall, Area
against mold and mildew. test. Separation Wall Systems
The face paper is folded The use of Shaftliner XP in and solid laminated
around the long edges to actual installations may not partitions.
reinforce and protect the produce the same results as
core, and the ends are were achieved in
square-cut and finished controlled, laboratory SPECIFICATIONS
smooth. Long edges of conditions. No material can
panels are beveled for be considered “mold proof,”
ease of installation. THE FOLLOWING PARAGRAPHS ARE
nor is it certain that any FOR INSERTION INTO SECTIONS
1" Shaftliner XP Panels are material will resist mold OF GENERIC SPECIFICATIONS OR
designed to be used to indefinitely. When used in GENERIC/PROPRIETARY
construct lightweight fire conjunction with good SPECIFICATIONS COVERING
barriers for cavity shaft design, handling and
walls and area separation GYPSUM BOARD PRODUCTS.
construction practices, THE NATIONAL GYPSUM
walls in multifamily Shaftliner XP can provide PRODUCT NAME FOLLOWS THE
housing. The panels are increased mold resistance GENERIC DESCRIPTION IN
key components in Cavity versus standard shaftliner PARENTHESES.
Shaftwall Systems and products. As with any
H-Stud Area Separation building material, avoiding
Wall Systems. water exposure during PART 2 PRODUCTS
handling, storage and
TECHNICAL DATA installation, and after 2.01 MATERIALS
installation is complete, is A. Fire and Mold-Resistant
SURFACE BURNING the best way to avoid the Gypsum Shaftliner Board:
CHARACTERISTICS formation of mold or A gypsum core shaftwall
mildew. board with additives to
ASTM E84 enhance fire resistance of
Flame Spread: 15 RECOMMENDATIONS the core and surfaced with
Smoke Developed: 0 a moisture/mold/mildew
Installation of 1" Shaftliner XP resistant paper on front,
WEIGHT Gypsum Panels should be back and long edges; and
1" XP - 3.75 lbs/SF consistent with methods complying with ASTM
described in specific C1396, Type X (Gold
FIRE RESISTANCE RATINGS application details for Bond BRAND Fire-Shield
Fire resistance ratings repre- Cavity Shaftwall Systems, or Shaftliner XP).
sent the results of tests on H-Stud Area Separation Wall 1. Thickness: 1"
assemblies made up of Systems, or other fire-rated 2. Width: 2'
materials authorized by designs shown in National 3. Length: 7' through 14'
National Gypsum in Gypsum Company “Gypsum 4. Edges: Beveled
specific configurations. Construction Guide.” 5. Mold and Mildew
When selecting contruc-
tion designs to meet certain Exposure to excessive or Resistance: Panel score
fire requirements, caution continuous moisture or of 10 when tested in
must be used to ensure that standing water and accordance with
each component of the extreme temperatures should ASTM D3273.
assembly is the one be avoided.
specified in the test.
Further, precaution should To prevent weakening due
be taken that assembly to calcining, 1" Fire-Shield PART 3 EXECUTION
procedures are in Shaftliner panels, like any 3.01 INSTALLATION
accordance with those of gypsum board, should not
the tested assembly. be exposed to temperatures A. General: In accordance
(For copies of specific tests, over 125˚F (52˚C) for with the manufacturer’s
call 1-800-NATIONAL) extended periods of time. recommendations,
National Gypsum
Not to be used in an unlined Company “Gypsum
MOLD AND MILDEW air supply duct.
RESISTANCE Construction Guide.”
Always store Shaftliner XP
Shaftliner XP was designed to Gypsum Panels flat on a
provide extra protection level surface, and support
against mold and mildew. with properly placed risers.
to Growth of Mold on the
Surface of Interior Coatings.

74 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC
Gold Bond® BRAND High Flex® Gypsum Board
DESCRIPTION “Recommended spaced closer together than For convex surfaces, one end
Specifications for the required for typical flat wall of the gypsum board shall
Gold Bond BRAND High Flex Application of Gypsum and ceiling surfaces (see be attached to the framing
Gypsum Board consists of Board,” ASTM C 840, Table 1). 1/4" High Flex with nails or screws. The
a fire-resistive gypsum core “Standard Specifications for Gypsum Board should be gypsum board shall be
encased in heavy natural- Application and Finishing of held in firm contact with progressively pushed into
finish paper on the face Gypsum Board,” and the framing member while contact with the framing
side and strong liner paper GA214, “Recommended fasteners are being driven. members, working from
on the back side. The face Levels of Gypsum Board the fixed end to the free
paper is folded around the For concave surfaces, a stop
Finish.” shall be applied to one end end. The gypsum board
long edges to reinforce shall be held tightly against
and protect the core and Exposure to extreme of the curve to restrain one
temperatures should be end or edge of the board each framing member
the ends are square-cut while fasteners are being
and finished smooth. Long avoided. 1/4" High Flex during installation. Pressure
Gypsum Board is not shall be applied to the driven.
edges of boards are slightly
tapered, allowing joints to recommended where it will unrestrained end or edge of Fasteners should be set with
be reinforced and be exposed to temperatures the gypsum board forcing the heads slightly below
concealed with ProForm exceeding 125˚F. the field of the gypsum the surface of the gypsum
Joint Tape and Joint Installing 1/4" High Flex board into firm contact board in a dimple formed
Treatment Compounds. Gypsum Board over an with the framing. Gypsum by the hammer or power
insulating blanket, installed board shall be fastened by screwdriver. Care should
1/4" High Flex Gypsum Board working from the be taken to avoid breaking
is specifically designed for continuously across the face
of the framing members, is “stopped” end or edge. The the face paper of the
radius construction such as gypsum board shall be held gypsum board. Improperly
curved walls, archways not recommended. Blankets
should be recessed and tightly against the framing driven nails or screws
and stairways. It can be while fasteners are being should be removed.
used for both concave and flanges attached to the sides
of the studs or joists. driven.
convex surfaces. 1/4" High
Flex is typically applied in For best painting results, all Table 1
double layers. surfaces, including joint MINIMUM BENDING RADII FOR 1/4" HIGH FLEX GYPSUM BOARD
1/4" High Flex Gypsum Board compound, should be
is a lightweight, cost- clean, dust-free and not Lengthwise Widthwise
efficient material that glossy. To improve fastener Bend Max. Stud Bend Max. Stud
readily accepts a wide and joint concealment, a Application Radii Spacing Radii Spacing
range of decorative coat of a quality latex
finishes. primer is recommended to Inside (Concave) Dry 32" 9" o.c. 20" 9" o.c.

09 29 00
equalize the absorption
1/4" High Flex Gypsum Board between surface paper and Outside (Convex) Dry 30" 9" o.c. 15" 8" o.c.
is easily cut for quick joint compound. Inside (Concave) Wet 20" 9" o.c. 10" 6" o.c.
installation, permitting
painting or other 1/4" High Flex Gypsum Board Outside (Convex) Wet 14" 6" o.c. 7" 5" o.c.
decoration and the should be applied first to
installation of metal or ceiling at right angles to Lengthwise denotes long edges perpendicular to the framing
wood trim almost framing members, then to members. Widthwise denotes long edges parallel to the framing
immediately. walls. Boards of maximum members. The values listed in Table 1 were achieved at 65° F and
practical length should be 45% relative humidity. Lower temperatures and lower humidity
The gypsum core is non- used so that an absolute will decrease the flexibility.
combustible. minimum number of end Wetting the board is only required on extremely tight radii, or when
With joints reinforced by joints occur. Board edges temperature and humidity conditions are lower than 65° F and
ProForm BRAND Joint should be brought into 45% relative humidity. When wetting the board, apply 10-15
Compounds, Gold Bond contact with each other but ounces of clean water per side with a paint roller or sprayer.
Gypsum Board forms walls should not be forced into Allow to soak 10-15 minutes before bending.
and ceilings exceptionally place.
resistant to cracks caused 1/4" High Flex Gypsum Board
by structural and thermal is significantly more flexible
changes. in the vertical direction
Expansion and contraction (long edges parallel to the
under normal atmospheric framing) than in the
changes is negligible. horizontal direction. (See
Table 1.)
TECHNICAL DATA Gypsum board joints at
SURFACE BURNING openings should be located
CHARACTERISTICS so that no end joint will
align with edges of openings
ASTM E 84 unless control joints will be
Flame spread: 15 installed at these points. End
Smoke developed: 0
joints should be staggered,
WEIGHT and joints on opposite sides
1/4" High Flex - .95 lbs/SF of a partition should not
occur on the same stud.
RECOMMENDATIONS 1/4" High Flex Gypsum Board
is typically installed in
Installation of Gold Bond BRAND double layer construction.
gypsum board should be To prevent flat spots,
consistent with methods framing members should be
described in GA216
NATIONAL GYPSUM BOARD PRODUCTS 75
 SPECIFICATIONS
THE FOLLOWING PARAGRAPHS ARE
FOR INSERTION INTO SECTIONS
OF GENERIC SPECIFICATIONS OR
GENERIC/PROPRIETARY
SPECIFICATIONS COVERING
GYPSUM BOARD PRODUCTS.
THE NATIONAL GYPSUM
PRODUCT NAME FOLLOWS THE
GENERIC DESCRIPTION IN
PARENTHESES.
PART 2 PRODUCTS
2.01 MATERIALS
A. Flexible Gypsum Board:
A gypsum core wall
board with additives to
enhance flexibility
surfaced with paper on
front, back and long
edges and complying
with ASTM C 1396.
(High Flex BRAND
Gypsum Board).
1. Thickness: 1/4"
2. Width: 4'
3. Length: 8' through 12'
4. Edges: Slightly tapered

PART 3 EXECUTION
3.01 INSTALLATION
A. General: In accordance
with the manufacturer’s
recommendations,
National Gypsum
Company “Gypsum
Construction Guide.”

76 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC
Gold Bond® BRAND High Strength Ceiling Board
DESCRIPTION RECOMMENDATIONS
Gold Bond BRAND High Installation of Gold Bond BRAND
Strength Ceiling Board is a Gypsum Board should be
specialty gypsum board with consistent with methods
increased uniformity and described in, GA216,
integrity of its gypsum core, “Recommended
making its sag resistance Specifications for the
equivalent to 5/8" type X Application of Gypsum
gypsum board. Board,” ASTM C 840,
1/2" High Strength Ceiling “Standard Specification for
Board is specifically Application and Finishing of
designed for ceilings where Gypsum Board.”
framing members are spaced Not recommended in areas of
up to 24" o.c. and a water- continuous high humidity
based texture will be used. such as saunas, steam
1/2" High Strength Ceiling rooms, gang shower rooms,
Board is available and indoor pool enclosures.
nationwide as a stocked Prime with sealing latex
item at all National Gypsum primer and allow to dry
plants. thoroughly. Apply insulation
and polyethylene vapor
Excellent working character- barrier (if used) before
istics, improved score and installing ceiling board.
snap properties reduce the Insulation not to exceed 2.2
need for rasping. lbs./square foot (10.7 kg/m2).
Excellent sag resistance. Adequate ventilation
Witnessed test results show required.
overall sag on tested 1/2" High Strength Ceiling
assembly to be equivalent to Board must be stored off the
5/8" type X gypsum board. ground and under cover.
Test report available upon Sufficient risers must be
request. used to ensure support for
Eliminates need for two board the entire length of the

09 29 00
sizes on the job. Scrap from gypsum board to prevent
ceiling is reduced since this sagging.
material also can be used on Not to be exposed to Gypsum Association GA-214, SS-L-30D type III,
the walls. temperatures exceeding Recommended Specification Grade R, Class 1. (Gold
125˚F (52˚C) for extended for Levels of Gypsum Board Bond BRAND High Strength
TECHNICAL DATA periods of time. Finish, should be referred to Ceiling Board).
Installing gypsum board over in order to determine the 1. Thickness: 1/2"
In independent tests, High an insulating blanket, level of finishing needed to
ensure a surface properly 2. Width: 4'
Strength Ceiling Board installed continuously across
exhibited an average sag of the face of the framing prepared to accept the 3. Length: 6' through 16'
only .033 (approx. 1/32") members, is not desired decoration. 4. Edge: Tapered
on joists spaced 24" on recommended. Blankets
center with a spray texture should be recessed and SPECIFICATIONS PART 3 EXECUTION
applied. This test was flanges attached to the sides
conducted over one month of the studs or joists. 3.01 INSTALLATION
THE FOLLOWING PARAGRAPHS ARE
at temperatures between DECORATION FOR INSERTION INTO SECTIONS A. General: In accordance
66˚-79˚F (19˚C-26˚C) and OF GENERIC SPECIFICATIONS OR with the manufacturer’s
relative humidities between For best painting results, all recommendations,
surfaces, including joint GENERIC/PROPRIETARY
30%-60%. (Reference: PSI SPECIFICATIONS COVERING National Gypsum
report #722600-R71 March compound, should be clean, Company “Gypsum
dust-free and not glossy. To GYPSUM BOARD PRODUCTS.
25, 1991) THE NATIONAL GYPSUM Construction Guide.”
improve fastener and joint
Under the strict ASTM C-473 concealment, a coat of a PRODUCT NAME FOLLOWS THE
Physical Testing for quality primer is GENERIC DESCRIPTION IN
Humidified Deflection, recommended to equalize PARENTHESES.
Gold Bond BRAND 1/2" the porosities between
High Strength Ceiling surface paper and joint PART 2 PRODUCTS
Board exhibited sag- compound. Drywall primer
resistant properties equal to 2.01 MATERIALS
is a product specially
5/8" type X gypsum board. formulated for this purpose. A. Gypsum Ceiling Board:
A gypsum core ceiling
The selection of a paint to give board with additives to
SURFACE BURNING the specified or desired
CHARACTERISTICS enhance the sag
finished characteristics is the resistance of the core
ASTM E 84 responsibility of the and surfaced with paper
Flame spread index: 15 architect or contractor. on front, back, and long
Smoke developed: 0 Gypsum board that is to have a edges, complying with
wallcovering applied to it ASTM C 1396 and
WEIGHT should be prepared and Federal specification
1/2" Hi Strength - 1.8 lbs/SF primed as described for
painting.
NATIONAL GYPSUM BOARD PRODUCTS 77
Gold Bond® BRAND Hi-Abuse XP® Gypsum Board
DESCRIPTION

Gold Bond® BRAND Hi-Abuse XP® Gypsum Board panels consist

of a mold and fire resistant type x gypsum core encased in
heavy mooth abrasion resistant, moisture, mold/mildew-
resistant, 100% recycled purple paper on the face side and
heavy mold/mildew-resistant liner paper on the back side. Hi-
Abuse XP Gypsum Board is designed to provide extra
protection against mold and mildew compared to standard
gypsum board products. The panels feature a specifically
formulated core to provide greater resistance to surface
indentation and impact than fiber-reinforced gypsum panels.
Long edges of the panels are tapered. Tapered edges allow
joints to be treated in the normal manner. For optimum mold
and mildew resistance, National Gypsum recommends
ProForm BRAND XP Ready Mix, or Sta-Smooth/Sta-Smooth Lite
setting compounds.

TECHNICAL DATA

Surface Abrasion Test

ASTM – D 4977 (Modified)
5/8" 5/8" Gypsum Board
Hi-Abuse XP Type X
Mean Depth Abrasion 0.009 in. 0.576 in. Walls and ceilings in school corridors and cafeterias are ideal
Performance Classification Level 3 Does Not Qualify applications for Gold Bond® BRAND Hi-Abuse XP® Gypsum Board.
Procedure Summary – A sample is laid flat and subjected to 50 abrasion cycles of a wire brush
with additional 25 lbs. weight. The depth of abrasion in three consecutive samples is measured and
reported as a mean depth of abrasion in inches. This test measures the ability of a panel to withstand
surface scuffs and abrasions.

Surface Abrasion Test

ASTM-D 4977 (Modified)
Depth of Abrastion (in.)

5/8" Hi-Abuse XP 5/8" Gypsum Board, Type X

Surface Indentation Resistance

Single Drop Soft Body Impact Test Modified ASTM – D 5420 (Gardner Impact)
Modified ASTM – E 695 (Modified)
5/8" 5/8" Gypsum Board
5/8" 5/8" Gypsum Board
Hi-Abuse XP Type X Hi-Abuse XP Type X
Mean Depth of indentation 0.132 in. 0.230 in.
Ft.-Lbs. required to penetrate 210 120
Performance Classification Level 1 Does Not Qualify
Performance Classification Level 2 Level 1
Procedure Summary – A sample is laid flat and impacted by a 5/8" hemispherical rod raised to
Procedure Summary – This test is conducted with a leather bag loaded with steel pellets to a height that provides 72 in.-lbs. of impact energy. The depth of the indentation is measured from
weight of 60 lbs. The bag is suspended by a rope and dropped at an angular distance until three board samples and reported as a mean depth of indentation in inches. This test measures the
specimen is impacted. ability for a panel to resist dents.

Single Drop Soft Body Test Surface Indentation Test

ASTM -E 695 (Modified) ASTM-D 5420
300 0.400
Depth of Indentation (in.)

0.350
250
Impact Force in ft.lbs.

0.300
210
200 0.230
0.250

150 0.200
120
0.150 0.132
100
0.100
50
0.050

0 0.000
5/8" Hi-Abuse XP 5/8" Gypsum Board, Type X 5/8" Hi-Abuse XP 5/8" Gypsum Board, Type X

78 NATIONAL GYPSUM BOARD PRODUCTS

SURFACE BURNING RECOMMENDATIONS 09 29 00/NGC
CHARACTERISTICS
ASTM E 84 Installation of Hi-Abuse XP
Flame spread (Face): 15 Gypsum Board should be
Smoke developed: 0 consistent with methods Minimum bending radii for
described in the standards 5/8" Hi-Abuse XP Gypsum
WEIGHT references noted. For best Board is 20'-0" applied
1/2" Hi-Abuse XP - 2.4 lbs/SF performance, use vertical lengthwise perpendicular to
5/8" Type X Hi-Abuse - 2.8 lbs/SF application. framing spaced not greater
than 12" on center.
GridMarX®
FIRE RESISTANCE RATINGS Lightweight, cost-efficient
Hi-Abuse® BRAND XP Gypsum
Fire resistance ratings represent Board comes standard with material that readily accepts
the results of tests on assem- GridMarX® guide marks a wide range of decorative
blies made up of specific printed on the paper surface. finishes.
materials in a specific con- These guide marks align with The gypsum core will not
figuration. When selecting standard building dimen- support combustion or
construction designs to meet sions and help to quickly transmit temperatures great-
certain fire resistance re- identify fastener lines for stud
quirements, caution must be ly in excess of 212˚F (100˚C)
and joist framing. Using until completely calcined, a
used to ensure that each GridMarX, accurate cuts can
component of the assembly be made without having to slow process.
is the one specified in the draw lines. The use of Expansion and contraction
test. Further, precaution GridMarX also provides under normal atmospheric
should be taken that assem- quick identification and changes are negligible.
bly procedures are in accor- uniform nail/screw patterns.
dance with those of the Hi-Abuse XP 5/8" Fire-Shield
tested assembly. (For copies GridMarX guide marks run the panels may be used where
of specific tests, call machine direction of the Type X gypsum panels are
1-800-NATIONAL.) board at five points in 4" specified in fire-rated wall
increments. Marks run along and floor-ceiling assemblies
the edge in both tapers and (i.e. UL, U300, U400, V400
MOLD AND MILDEW and at 16", 24" and 32" in
RESISTANCE the field of the board. The and L500 series.)
Hi-Abuse® BRAND XP Gypsum marks cover easily with no Exposure to excessive or
Board has been designed to bleed-through using stand- continuous moisture and
provide extra protection ard products. extreme temperatures should
against mold and mildew Vertical Application - In a be avoided. Hi-Abuse XP
compared to standard vertical application, Gypsum Board is not recom-
gypsum board products. mended where it will be
When tested by an GridMarX serves as a

09 29 00
independent lab per ASTM guide mark to help identify exposed to temperatures
D3273 (“Standard Test the exact location of framing exceeding 125˚F (52˚C) for
Method for Resistance to members behind the gypsum extended periods of time.
Growth of Mold On the board, eliminating the need
Surface of Interior Coatings in for field-applied vertical Hi-Abuse XP Gypsum Board
an Environmental Chamber”), lines. shall not be used where
Hi-Abuse XP Gypsum Board there will be direct exposure
achieved a score of 10, the Horizontal Application - In a to water or continuous high
best possible score for this horizontal application, humidity conditions, such as
test. GridMarX serves as a found in tub and shower
reference mark to help enclosures, saunas, steam
The use of Hi-Abuse XP identify the location of
Gypsum Board in actual framing members behind the rooms and gang showers. If
installations may not the area is to be exposed to
produce the same results as gypsum board. (If framing
member is located 2" to the water or continuous high
were achieved in controlled, humidity, National
laboratory conditions. No right of the GridMarX at the
material can be considered top edge of the board, it will Gypsum’s PermaBase®
“mold proof,” nor is it be located 2" to the right BRAND Cement Board should
certain any material will down the face of the board.) be used.
resist mold or mildew Provides greater resistance Hi-Abuse XP Gypsum Board
indefinitely. When used in to surface abuse, indentation must be stored off the
conjunction with good
design, handling and and impact than fiber-rein- ground and under cover.
construction practices, Hi- forced gypsum panels. Sufficient risers must
Abuse XP Gypsum Board Hi-Abuse XP smooth face be used to ensure support
can provide increased mold paper is highly resistant to for the entire length of the
resistance versus standard scuffing when sanding gypsum board to prevent
gypsum board products. As gypsum board joints and sagging.
with any building material, fasteners providing a
avoiding water exposure superior surface for deco-
during handling, storage and
installation, and after ration.
installation is complete, is Hi-Abuse XP Gypsum Board is
the best way to avoid the easily scored and snapped
formation of mold or for quick installation. Open-
mildew. ings and outlet boxes are
cut out in same manner as
regular gypsum board.

NATIONAL GYPSUM BOARD PRODUCTS 79

 Hi-Abuse XP Gypsum Board SPECIFICATIONS
must be kept dry to mini-
mize the potential for mold THE FOLLOWING PARAGRAPHS ARE
growth. Adequate care FOR INSERTIONS INTO SECTIONS
should be taken while trans- OF GENERIC SPECIFICATIONS OR
porting, storing, applying GENERIC/PROPRIETARY SPECIFI-
and maintaining gypsum CATIONS COVERING GYPSUM
board. For additional BOARD PRODUCTS. THE
information, refer to the NATIONAL GYPSUM PRODUCT
Gypsum Association pub- NAME FOLLOWS THE GENERIC
lication, “Guidelines for DESCRIPTION IN PARENTHESES.
the Prevention of Mold
Growth on Gypsum Board”
(GA-238-03), which PART 2 PRODUCTS
is available at www. 2.01 MATERIALS
gypsum.org under the A.Fire, Abuse and Mold
“Download Free Gypsum Resistant Gypsum Board: A
Association Publications” gypsum core wall panel
section. with additives to enhance
fire resistance, surface
DECORATION indentation resistance and
For best painting results, all sur- impact resistance of the
faces, including joint com- core and surfaced with abra-
pound, should be clean, sion, moisture/mold/mildew
dust-free and not glossy. To resistant paper on front,
improve fastener and joint back and long edges; and
concealment, a coat of a complying with ASTM
quality drywall primer is re- C 1396 Type X (Hi-Abuse
BRAND XP Fire-Shield
commended to equalize the
porosities between surface Gypsum Board).
and joint compound. 1. Thickness: 5/8"
2. Width: 4'
The selection of a paint to give 3. Length: 8' through 12'
the specified or desired 4. Edges: Tapered
finished characteristics is the 5. Surface Abrasion Resis-
responsibility of the architect tance: Not greater than
or contractor. 0.009 depth when tested
Hi-Abuse XP Gypsum Board at 50 cycles in accord-
that is to have a wall ance with ASTM D 4977,
covering applied to it should modified.
be prepared and primed as 6. Indentation Resistance:
described for painting. Not greater than 0.132"
depth when tested at an
Gypsum Association GA-214, impact load of 72 in.-lbs.
“Recommended Specifica- In accordance with ASTM
tions for Levels of Gypsum D 5420.
Board Finish,” should be re- 7. Impact/Penetration Resist-
ferred to in order to deter- ance: Not less than 210
mine the level of finishing ft.-lbs. required to penetrate
needed to ensure a surface when tested in accordance
properly prepared to accept with ASTM E 695,
the desired decoration. modified.
8. Mold/Mildew Resistance:
Panel score of 10 when
tested in accordance with
ASTM D 3273.

PART 3 EXECUTION
3.01 INSTALLATION
A. General: In accordance
with the manufacturer’s
recommendations,
National Gypsum Company
“Gypsum Construction
Guide.”

80 NATIONAL GYPSUM BOARD PRODUCTS

Gold Bond® BRAND Hi-Impact XP® Gypsum Board 09 29 00/NGC

DESCRIPTION
Gold Bond® BRAND Hi-Impact XP® Gypsum Board panels consist
of a mold, moisture and fire resistant type X gypsum core
encased in heavy, smooth, abrasion-resistant, mold/mildew-
resistant, 100% recycled purple paper on the face side and
heavy mold/mildew resistant liner paper on the back side. A
fiberglass mesh is embedded in the core, close to the back of
the board to provide additional impact/penetration resistance.
Hi-Impact XP Gypsum Board features a specially formulated
core to provide fire resistance ratings when used in tested
systems in addition to providing extra protection against mold
and mildew compared to standard gypsum board products.
Long edges of panels are tapered. Tapered edges allow joints
to be treated in the normal manner. For optimum mold and
mildew resistance, National Gypsum recommends ProForm
BRAND XP Ready Mix, or Sta-Smooth/Sta-Smooth Lite
compounds.

TECHNICAL DATA
Surface Abrasion
ASTM – D 4977 (Modified)
5/8" Hi-Impact XP 5/8" Gypsum Board
with Fiberglass Scrim Type X
Mean Depth Abrasion 0.009 in. 0.576 in.
Performance Classification Level 3 Does Not Qualify Prison walls have to be strong. And, with GOLD BOND® BRAND
Procedure Summary – A sample is laid flat and subjected to 50 abrasion cycles of a wire brush
Hi-Impact XP® Gypsum Board, strong walls can be installed as
with additional 25 lbs. weight. The depth of abrasion in three consecutive samples is measured and easily as regular gypsum board.
reported as a mean depth of abrasion in inches. This test measures the ability of a panel to withstand
surface scuffs and abrasions.

Surface Abrasion
ASTM – D 4977(Modified)
Depth of Abrasion (in.)

09 29 00
5/8" Hi-Impact XP 5/8" Gypsum Board, Type X
with Fiberglass Scrim

Surface Indentation Test

Single Drop Soft Body Impact Test ASTM – D 5420 (Gardner Impact)
ASTM – E 695 (Modified)
5/8" Hi-Impact XP 5/8" Gypsum Board
5/8" Hi-Impact 5/8" Gypsum Board with Fiberglass Scrim Type X
with Fiberglass Scrim Type X
Mean Depth of indentation 0.114 in. 0.230 in.
Ft.-Lbs. required to penetrate >540* 120
Performance Classification Level 1 Does Not Qualify
Performance Classification Level 3 Level 1
Procedure Summary – A sample is laid flat and impacted by a 5/8" hemispherical rod raised to
Procedure Summary – This test is conducted with a leather bag loaded with steel pellets to a height that provides 72 in.-lbs. of impact energy. The depth of the indentation is measured from three
weight of 120 lbs. The bag is suspended by a rope and dropped at an angular distance until specimen
is impacted.* In the test the framing collapsed without failure to the Hi-Impact panels. board samples and reported as a mean depth of indentation in inches. This test measures the ability
for a panel to resist dents.

Single Drop Soft Body Test Surface Indentation Test

ASTM-E 695 (Modified) ASTM – D 5420
600 0.400
> 540 *
Depth of Indentation (in.)
Impact Force in ft.-lbs.

500 0.350
0.300
400
0.250 0.230
300 0.200

200 0.150
0.114
120
0.100
100
0.050
0 0.000
5/8" Hi-Impact XP 5/8" Gypsum Board, Type X 5/8" Hi-Impact XP 5/8" Gypsum Board, Type X
with Fiberglass Scrim with Fiberglass Scrim

NATIONAL GYPSUM BOARD PRODUCTS 81

 Hard Body Impact - ASTM C 1629 specified in the test. Further at 16", 24" and 32" in the
precaution should be field of the board. The marks
5/8" Hi-Impact XP 5/8" Gypsum Board taken specified in the test. cover easily with no bleed-
with Fiberglass Scrim Type X Further precaution should be through using standard
Ft.-lbs. to penetrate into cavity >160 35 taken that assembly products.
Performance Classification Level 3 Does Not Qualify procedures are in accordance
with those of the tested Vertical Application - In a
Procedure Summary – A 2' x 2' board sample is mounted to a 3-5/8", 20 gauge steel frame and
assembly. (For copies of vertical application,
runners using drywall screws. The sample is impacted with a ram mounted on a pendulum which is GridMarX serves as a guide
faced with a 2-3/4" steel cylinder dropped from a fixed height. Weights are added to increase the specific tests, call 1-800-
impacting energy. The maximum impact force that the sample can withstand without penetration NATIONAL.) mark to help identify the
through the sample and into the stud cavity is reported in foot-pounds. This test measures the ability exact location of framing
to withstand the impact of a hard object such as a hammer or heel of a boot. FIRE ENDURANCE members behind the gypsum
1-Hour Rating: Hi-Impact XP board, eliminating the need
Hard Body Impact for field-applied vertical
180 Gypsum Board screw
>160 attached vertically to both lines.
Impact Force in ft.-lbs.

160
sides of 20 gauge 3-5/8" studs Horizontal Application - In a
140
spaced16" o.c. with 1-1/4" horizontal application,
120 long, type S screws spaced 8" GridMarX serves as a
100 o.c. along edges and 12" o.c. reference mark to help
80 in the field of the board. identify the location of
60 Gypsum board joints framing members behind the
40
staggered. UL U465 gypsum board. (If framing
35
2-Hour Rating: Constructed member is located 2" to the
20
with a base layer of right of the GridMarX at the
0 top edge of the board, it will
5/8" Hi-Impact XP 5/8" Gypsum Board, Type X Hi-Impact XP Gypsum Board
with Fiberglass Scrim with an additional layer be located 2" to the right
of 5/8" Fire-Shield Gypsum down the face of the board.)
Water Absorption Board Type X screw attach- Hi-Impact XP Gypsum Board can
ASTM C 473 ed vertically to both sides of be used as a tile backer board
5/8" High-Impact XP 5/8" Gypsum Board 20 gauge 3-5/8" studs in dry areas and areas with
with Fiberglass Scrim Type X spaced 16" o.c. with joints limited water exposures such
Percentage of Weight Gained 4% 47% staggered between face and as toilet/sink areas and areas
Procedure Summary – Three dry board samples were cut and weighed. Each sample was then base layer. Base layer above tile in tubs and showers
submerged in a 3-inch water bath for two hours. The samples were removed, wiped and weighed attached with 1-1/4" long
again. The weight gained is calculated and reported as a percentage. The higher the percentage the type S screws spaced 8" Hi-Impact XP Gypsum Board
more water the panel absorbed.
o.c. along edges and 12" should not be used as a backer
o.c. in the field of the board. board directly behind tile in
Water Absorption tub and shower areas.
ASTM C 473 Outer layer attached with
50%
Less is Better 2-1/2" long type S screws Hi-Impact XP should not be used
45% 47%
spaced 8" o.c. in the field in areas subject to constant
and along vertical edges and and/or excessive moisture and
% of Weight Gain

40%
to the floor and ceiling high humidity such as gang
35%
runners. UL U411 showers, saunas, steam rooms
30%
For additional UL Design and swimming pool enclo-
25%
Listings, please reference sures. PermaBase BRAND
20% cement board is recommended
the UL Directory.
15% for these areas.
10%
5% 4% RECOMMENDATIONS Hi-Impact XP Gypsum Board can
0
be used on the interior side
5/8" Hi-Impact XP 5/8" Gypsum Board, Type X Installation of 5/8" Hi-Impact of exterior walls in hot, hu-
with Fiberglass Scrim XP Fire-Shield Type X mid climates such as the
Gypsum Board should be Southern Atlantic and Gulf
consistent with methods Coast areas.
SURFACE BURNING laboratory conditions. No described in Applicable
CHARACTERISTICS material can be considered Standards with one Hi-Impact XP Gypsum Board
“mold proof,” nor is it certain exception - for best results, features a type X core to
ASTM E 84 provide additional fire
(Face) any material will resist mold cutting and scoring of
Flame spread: 15 or mildew indefinitely. When Hi-Impact XP should be from resistance when used in
Smoke developed: 0 used in conjunction with tested systems.
good design, handling and the back side of the board.
WEIGHT construction practices, Hi- Hi-Impact XP Gypsum Board is
GridMarX® easily cut for quick installa-
5/8" Hi-Impact XP - 2.8 lbs/SF Impact XP Gypsum Board tion, permitting painting or
can provide increased mold Hi-Impact XP Gypsum Board
resistance versus standard comes standard with other decoration and the
MOLD AND MILDEW installation of most metal
RESISTANCE gypsum board products. As GridMarX® guide marks
with any building material, printed on the paper surface. or wood trim almost
Hi-Impact® XP Gypsum Board has avoiding water exposure These guide marks align with immediately.
been designed to provide extra during handling, storage and standard building dimensions Minimum bending radii for 5/8"
protection against mold and installation, and after and help to quickly identify Hi-Impact XP Gypsum Board is
mildew compared to standard installation is complete, is the fastener lines for stud and 20'-0" applied lengthwise
gypsum board products. When best way to avoid the joist framing. Using GridMarX, perpendicular to framing
tested by an independent lab formation of mold or mildew. spaced not greater than 12"
per ASTM D3273 (“Standard accurate cuts can be made
FIRE RESISTANCE RATINGS without having to draw lines. on center.
Test Method for Resistance to
Growth of Mold On the Fire resistance ratings represent The use of GridMarX also The gypsum core will not
Surface of Interior Coatings in the results of tests on assem- provides quick identification support combustion or trans-
an Environmental Chamber”), blies made up of specific and uniform nail/screw mit temperatures greatly in
Hi-Impact XP Gypsum Board configuration. When patterns. excess of 212˚F (100˚C)
achieved a score of 10, the best selecting construction GridMarX guide marks run the until completely calcined,
possible score for this test. designs to meet certain fire machine direction of the a slow process.
The use of Hi-Impact XP resistance requirements, board at five points in 4"
Gypsum Board in actual caution must be used to increments. Marks run along
installations may not ensure that each component the edge in both tapers and
produce the same results as of the assembly is the one at 16", 24" and 32" in the
were achieved in controlled, field of the board. The marks
82 NATIONAL GYPSUM BOARD PRODUCTS
Exposure to excessive or The selection of a paint to give 09 29 00/NGC
continuous moisture and the specified or desired
extreme temperatures should finished characteristics is the
be avoided. responsibility of the architect 5. Surface Abrasion Resis-
Listed impact/penetration or contractor. tance: Not greater than
ratings apply to walls con- Hi-Impact XP Gypsum Board 0.009" depth when
structed with Hi-Impact XP that is to have a wall tested at 50 cycles in
Gypsum Board applied with covering applied to it should accordance with ASTM
long edges parallel to and be prepared and primed as D 4977, Modified.
centered over minimum 20 described for painting. 6. Indentation Resistance:
gauge framing members Not greater than 0.114"
spaced a maximum of 16" Gypsum Association GA-214, depth when tested at
o.c. “Recommended Specifica- an impact load of 72
tion for Levels of Gypsum in.-lbs. in accordance
Hi-Impact XP Gypsum Board Board Finish,” should be
must be stored off the with ASTM D 5420.
referred to in order to deter- 7. Impact/Penetration
ground and under cover. mine the level of finishing
Sufficient risers must be Resistance: Not less than
needed to ensure a surface 720 ft.-lbs. required to
used to ensure support for properly prepared to accept
the entire length of the penetrate when tested in
the desired decoration. accordance with ASTM
gypsum board to prevent
sagging. E 695, Modified.
SPECIFICATIONS 8. Mold/Mildew
Hi-Impact XP Gypsum Board Resistance: Panel score
must be kept dry to mini- THE FOLLOWING PARAGRAPHS ARE of 10 when tested in
mize the potential for mold FOR INSERTION INTO SECTIONS accordance with ASTM
growth. Adequate care OF GENERIC SPECIFICATIONS FOR D 3273.
should be taken while trans- GENERIC/PROPRIETARY SPECIFI-
porting, storing, applying CATIONS COVERING GYPSUM
and maintaining gypsum PART 3 EXECUTION
BOARD PRODUCTS. THE
board. For additional NATIONAL GYPSUM PRODUCT 3.01 INSTALLATION
information, refer to the NAME FOLLOWS THE GENERIC
Gypsum Association pub- A. General: In accordance
DESCRIPTION IN PARENTHESES. with the manufacturer’s
lication, “Guidelines for
the Prevention of Mold recommendations,
Growth on Gypsum Board” PART 2 PRODUCTS National Gypsum
(GA-238-03), which Company “Gypsum
2.01 MATERIALS Construction Guide.”
is available at www.
gypsum.org under the A. Fire, Impact/Penetration
and Mold-Resistant Gypsum

09 29 00
“Download Free Gypsum
Association Publications” Board: A gypsum core wall
section. panel with additives to
enhance the fire and
DECORATION resistance, and mold/mildew
resistance of the core; surfaced
For best painting results, all with abrasion/moisture/mold/
surfaces, including joint mildew resistant paper on the
compound, should be clean, front, back and long edges
dust-free and not glossy. To with a fiberglass mesh
improve fastener and joint embedded in the board to
concealment, a coat of high enhance impact/penetration
quality latex primer is resistance and complying with
recommended to equalize ASTM C 1396, Type X.
the absorption between sur- (Gold Bond BRAND Hi-Impact
face paper and joint com- XP Fire-Shield Gypsum Board).
pound. Drywall primer is
specially formulated for this 1. Thickness: 5/8"
purpose. 2. Width: 4'
3. Length: 8' through 12'
4. Edges: Tapered

NATIONAL GYPSUM BOARD PRODUCTS 83

GOLD BOND® BRAND SoundBreak™ Gypsum Board

DESCRIPTION SoundBreak Gypsum Board

can be cut by scoring
Gold Bond® BRAND deeply from both sides of
SoundBreak™ Gypsum the board before snapping,
Board is an acoustically or with the use of a hand
enhanced gypsum board or reciprocating saw.
used in the construction of
high rated STC wall TECHNICAL DATA
assemblies. This 5/8" thick
gypsum board consists of a
layer of viscoelastic SURFACE BURNING
damping polymer CHARACTERISTICS
sandwiched between two ASTM E 84
pieces of enhanced high Flame spread: 15
density mold resistant Smoke developed: 0
gypsum board, providing
constrained layer damping. WEIGHT
For speed of installations, SoundBreak - 2.7 lbs/SF
GridMarX® guide marks are
printed on the paper FIRE RESISTANCE RATINGS
surface. As an option, SoundBreak
Long edges of the panels are Gypsum Board may be
tapered. Tapered edges used as an additional layer
allow joints to be on one or both sides of fire-
reinforced with ProForm® rated wall assemblies (i.e.,
BRAND Joint Tape and U300, W300, U400, W400
concealed with ProForm® and V400 series designs).
BRAND Ready Mix, Easy SoundBreak Gypsum Board
Finish® BRAND Ready Mix or cannot be used as a
ProForm® BRAND Sta- substitute for 5/8" Type X
Smooth® Joint Compounds. gypsum board in a fire-
For optimum mold and related assembly. Mold and Moisture
mildew performance, Resistant Face
SoundBreak Gypsum Board Paper
National Gypsum shall be attached in
recommends ProForm® accordance with
BRAND XP® Ready Mix. manufacturer’s
Use of SoundBreak Gypsum recommendations. When Viscoelastic
Polymer
Board results in wall SoundBreak Gypsum Board
partitions with high rated is installed between the
STC values that are thinner framing and the UL/ULC
than traditionally built high Classified gypsum board,
rated STC wall partitions, the UL/ULC Classified
providing increased usable gypsum board layer(s)
floor space. required for the design
Mold and
Superior sound damping, cost- is/are to be installed as Moisture Resistant
efficient material that is indicated in the design as Enhanced Back Paper
easily finished and to fastener type and High Density
spacing, except that the Mold Resistant Core
decorated in the same
manner as regular gypsum required fastener length
board. shall be increased by a
minimum of 5/8" (16 mm). For additional information go to
All SoundBreak Gypsum
Board designs were tested For U300, W300, U400, www.SoundBreak.info.
by an independent third- W400 and V400 series
party acoustical laboratory designs, outer layer treated
using the full scale ASTM with joint compound and
E90 test procedure. paper tape as specified in **MOLD AND MILDEW When tested by an
the design. RESISTANCE independent lab per ASTM
SoundBreak Gypsum Board is D3273 (“Standard Test
installed like traditional For additional information go SoundBreak Gypsum Board
to UL/ULC Online Method for Resistance to
gypsum board offering a was designed to provide Growth of Mold on the
more reliable and less Certifications Directories, extra protection against Surface of Interior Coatings
complicated solution than Product Category Code mold and mildew in an Environmental
alternative methods CLBV.R25426 – Wall and compared to standard Chamber”), SoundBreak
Partition Facings and gypsum board products. Gypsum Board achieved a
requiring clips and/or
channels. Accessories. score of 10, the best
possible score for this test.

84 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC
RECOMMENDATIONS

Installation of SoundBreak SoundBreak Gypsum Board

Gypsum Board should be must be stored off the ground SPECIFICATIONS
consistent with methods and under cover. Sufficient
described in the standards risers must be used to ensure
support for the entire length PART 2 PRODUCTS
and references noted.
of the gypsum board to THE FOLLOWING PARAGRAPHS ARE
Stagger SoundBreak Gypsum
Board joints from one side of prevent sagging. FOR INSERTION INTO SECTIONS OF
GENERIC SPECIFICATIONS OR
the wall to another. SoundBreak Gypsum Board
GENERIC/PROPRIETARY
Allow a 1/4" gap along all must be kept dry to minimize
SPECIFICATIONS COVERING
perimeter edges and the potential for mold
GYPSUM BOARD PRODUCTS. THE
completely seal 1/4" gap with growth. Adequate care
should be taken while NATIONAL GYPSUM PRODUCT
acoustical sealant or caulk. NAME FOLLOWS THE GENERIC
transporting, storing, applying
Refrain from wall penetrations DESCRIPTION IN PARENTHESES.
and maintaining SoundBreak
when possible. Gypsum Board. For 2.01 MATERIALS
Limit necessary wall additional information, refer A. Acoustically Enhanced Mold
penetrations to one per stud to the Gypsum Association and Mildew Resistant
cavity. publication, “Guidelines for Gypsum Board: A gypsum
Seal all penetrations with the Prevention of Mold core wall panel with a
acoustical sealant and/or Growth on Gypsum Board” constrained viscoelastic
putty pads. (GA-238-03), which is polymer center layer; surfaced
available at with moisture/mold/mildew
The use of SoundBreak Gypsum www.gypsum.org under the
Board in actual installations resistant paper on front, back
“Download Free Gypsum and long edges and
may not produce the same Association Publications”
results as were achieved in complying with ASTM C
section. 1396 (Gold Bond® BRAND
controlled, laboratory
conditions. SoundBreak Gypsum Board)
Use an acoustical sealant that is DECORATION 1. Thickness: 5/8"
applied per ASTM C919, For best painting results, all 2. Width: 4'
such as Grabber Acoustical surfaces, including joint 3. Length: 8' , 9' , 10' or 12'
Sealant GSC, STI SpecSeal compound, should be clean, 4. Edges: Tapered
Smoke N Sound Caulk, BOSS dust-free and not glossy. To
824 Acoustical Sound Sealant improve fastener and joint 5. Mold and Mildew
or equivalent. concealment, a coat of Resistance: Panel Score

09 29 00
Use a putty pad that has been quality drywall primer is of 10 when tested in
tested per ASTM E90, such as recommended to equalize
the porosities between Accordance with ASTM
STI SpecSeal SSP Putty Pads
or BOSS 818 Fire-Rated Putty surface paper and joint D 3273
Pads or equivalent. compound. PART 3 EXECUTION
Exposure to excessive or The selection of a paint to give 3.01 INSTALLATION
continuous moisture and the specified or desired
finished characteristics is the A. General: In accordance
extreme temperatures should with the manufacturer’s
be avoided. SoundBreak responsibility of the architect
or contractor. recommendations,
Gypsum Board is not National Gypsum
recommended where it will SoundBreak Gypsum Board that Company “Gypsum
be exposed to temperatures is to have a wall covering Construction Guide.”
exceeding 125˚ (52˚C) for applied should be prepared
extended periods of time. and primed as described for
SoundBreak Gypsum Board is painting.
for use in wall assemblies. Gypsum Association GA-214,
Installing SoundBreak Gypsum Recommended Specification
Board panels over an for Levels of Gypsum Board
insulating blanket, installed Finish, should be referred to
continuously across the face in order to determine the
of the framing members, is level of finishing required to
not recommended. Blankets ensure a properly prepared
should be recessed and surface that accepts the
flanges attached to the sides desired decoration.
of the studs.

NATIONAL GYPSUM WALLBOARD PRODUCTS 85

Gridstone® BRAND Ceiling Panels
RECOMMENDATIONS
DESCRIPTION TECHNICAL DATA
Gridstone ceiling panels are
Gridstone® BRAND prefinished A. Specification Compliance designed to be mounted in
ceiling panels have a non- standard 15/16" exposed
Gridstone panels conform to ASTM C 1396 Type X Class I. tee grid systems or
combustible, Fire-Shield G
gypsum core. The 2-mil B. Light Reflectance environmental type grids
white, stipple-textured for severe conditions, with
LRI (75% or greater) grids either 2' x 2' or 2' x
vinyl laminate combines
high light reflectance with C. Sound Attenuation 4'. Grid installation should
easy cleanability. (Per ASTM E1414) be conducted according to
manufacturer's specifi-
Gridstone panels can be used cation.
for interior and exterior Type Thickness Construction CAC NGC Report #
ceiling applications. Each panel must be supported
Gridstone 1/2" FSW-G Continuous 46dB 6098001 on all four (4) edges.
Gridstone Ceiling Panels (12.7 mm)
install easily in standard 2' Cross ventilation must be
x 2' and 2' x 4' exposed D. Abrasion provided in unheated or
grid systems. Ceiling panels enclosed space above
Wet: (Gardner Scrub Tester) 2000 oscillations with no film ceiling panels.
have a rigid gypsum core break-through and only minor erosions.
which provides extra General: Install panels in lay-
resistance to sagging and Dry: (Taber Abrasion Test with CS-17 Wheel) 500 cycles with no in suspension systems with
warping. break-through to the substrate. edges concealed by flanges
A noncombustible gypsum E. Surface Burning Characteristics of suspension members.
core ensures fire safety with (Per ASTM E 84) Cut boards to fit tightly at
1 1/2- and 2-hour fire borders and penetrations so
rating achievable Flame Smoke that cut edges are
depending on installation. Type Spread Developed Class Test concealed by trim pieces
and escutcheons.
The sturdy white vinyl Gridstone 5 0 A WHI 694-0700.7
laminate eliminates Cleaning: Common dirt and
additional finishing. F. Weight stains on the vinyl surface
can be removed with mild
As little as 1" of material can 1/2" FSW-G - 2.18 lbs/SF soap or detergent in
be cut from Gridstone G. Fire Rating lukewarm water. Use a
panels with practically light, scrubbing action with
none of the crumbling (Per ASTM E 119)
a cloth, sponge or soft
common with mineral fiber brush.
panels. Nominal
Type Thickness Size Design* Rating If the suitability of any
For exterior application, cleaning agent is unknown,
protect grid panels from Gridstone 1/2" FSW-G 2' x 2' UL G222 2 hr.
check its effect on the
direct exposure to weather, (12.7 mm) (610 mm x 610 mm) FM FC-299 Gridstone panel surface in
water and continuous high a hidden area or on a scrap
humidity. Under no 1/2" FSW-G 2' x 4' UL G259 1 1/2 hr. piece before attempting to
circumstances should remove a field stain.
water be in contact with (12.7 mm) (610 mm x 1219 mm) FM FC-300
the back of the panels. Gridstone Ceiling Panels are
*See Quick Selector, page 25, for fire rated assembly details. not recommended for use
Overlaid insulation may cause in areas exposed to
excessive panel deflection extreme or continuous
and is not recommended moisture such as found in
where high humidity is saunas, steam rooms, gang
likely to occur. shower rooms or indoor
Extreme lighting conditions pool enclosures, per ASTM
may distort texture C840 17.3.1.1.
appearance. DECORATION
The use of strong organic Gridstone Brand Ceiling
solvents (such as ketones), Panels are factory-finished
harsh abrasive cleansers or decorative products which
steel wool are not do not require painting.
recommended. These However, if desired,
materials may cause Gridstone can be painted
dulling, discoloration, with the following two
softening and other products:
permanent damage to the
vinyl surface. 1. Two coats of an alkyd or
latex enamel.
USDA Acceptance: Gridstone
panels are accepted by the 2. Oil primer with finish
USDA for use in food coat of oil or latex paint.
service and food 3. Two coats of latex paint.
processing areas. Vinyl laminate on face
of 2' x 2' Gridstone
panel is directional.
Install with all factory
edges parallel (same
direction).
86 NATIONAL GYPSUM BOARD PRODUCTS
 GRIDSTONE® BRAND CLEANROOM CEILING PANELS
DESCRIPTION TECHNICAL DATA SPECIFICATIONS
Reference Gridstone technical THE FOLLOWING PARAGRAPHS
Gridstone BRAND CleanRoom data on page 86. ARE FOR INSERTION INTO SECTIONS
Ceiling Panels are
OF GENERIC SPECIFICATIONS OR
sealed on the face, back
GENERIC/PROPRIETARY
and long edges with a 2 RECOMMENDATIONS SPECIFICATIONS COVERING GYPSUM
mil rigid vinyl film. The
exposed edges are factory BOARD PRODUCTS. THE NATIONAL
Gridstone CleanRoom Ceiling GYPSUM PRODUCTS NAME
sealed with a durable Panels are designed to be FOLLOWS THE GENERIC
PACKAGING coating providing a used in a gasket seal DESCRIPTION IN PARENTHESES.
2' x 2' – 4 pcs./bundle, 16 sq. completely sealed panel. suspended grid system
ft., 80 bundles/Unit Gridstone CleanRoom panels using hold down clips.
Catalog Code – GB5044 are for use in systems Recommended use of Gordon PART 2
2' x 4' – 4 pcs./bundle, 32 sq. designed for areas requiring DS-20 gasket Seal System 2.02 MATERIALS
ft., 40 bundles/Unit high levels of air cleanliness or equivalent gasket sealed A. Fire-Resistant Sealed
Catalog Code – GB5045 for airborne particulate grid systems designed for Vinyl Laminated Gypsum
All bundles are double- levels such as clean rooms clean room applications. Grid Board: A gypsum
wrapped with long corner and clean zones. Grid installation should be core lay-in ceiling panel
protectors. Designed for clean room conducted according to with additives to enhance
use. Approved for use in manufacturer's sag and fire resistance of
systems, Class 100,000, specification. the core. Panels are
SPECIFICATIONS Class 10,000, Class Each panel must be supported sealed on face, back and
1,000, Class 100 per on all four (4) edges. long edges with a 2-mil
THE FOLLOWING PARAGRAPHS ARE Federal Standard 209E Cross ventilation must be rigid vinyl film and
FOR INSERTION INTO SECTIONS OF “Airborne Particulate provided in unheated or exposed edges are factory
GENERIC SPECIFICATIONS OR Cleanliness Classes in enclosed space above sealed with a durable
GENERIC/PROPRIETARY Clean Rooms and Clean coating providing a
ceiling panels.
SPECIFICATIONS COVERING Zones.” completely sealed panel;
GYPSUM BOARD PRODUCTS. THE General: Install panels in and complying with
Fire-resistant. A non- lay-in suspension systems
NATIONAL GYPSUM PRODUCT combustible gypsum ASTM C 1396, type X;
NAME FOLLOWS THE GENERIC with edges concealed by Class 1; E 1264, type XX,
core ensures fire safety flanges of suspension
DESCRIPTION IN PARENTHESES. with 1 1/2 and 2-hour Patterns E, G.
members. Cut panels to fit
PART 2 fire rating achievable tightly at borders and Federal Standard 209E

09 29 00
2.02 MATERIALS depending on installation. penetrations so that cut “Airborne Particulate
A. Fire Resistant Vinyl Sag-resistant. Gridstone edges are concealed by trim Cleanliness Classes in
Laminated Gypsum Grid CleanRoom panels’ rigid pieces and escutcheons. Clean Rooms and Clean
Board: A gypsum core gypsum core prevents Zones.” (Gridstone BRAND
If panel cuts are required, CleanRoom Ceiling
lay-in ceiling board with sagging and warping exposed core should be
additives to enhance problems and is backed Panels).
sealed to maintain
sag and fire resistance of by a 15-year limited performance of the system. 1. Thickness: 1/2"
the core; surfaced with warranty. 2. Width and length:
paper on the front and Cleaning: Common dirt and
Do not install panels in stains on the vinyl surface 2' x 2'
back and finished on areas exposed to
the front with a 2 mil, can be removed with mild 2' x 4'
continuous high humidity soap or detergent in
white, stipple textured such as saunas, steam
vinyl laminate; and lukewarm water. Use a light
rooms, gang showers, and scrubbing action with a PART 3
complying with ASTM indoor pools per ASTM
C 1396, type X; Class 1; cloth, sponge or soft brush. 3.03 INSTALLATION
C840, 17.3.1.1.
E 1264, type XX, If the suitability of any A. Install panels in lay-in
patterns E, G. (Gridstone Overlaid insulation may cleaning agent is unknown,
cause excessive panels suspension systems with
Brand Ceiling Panel). check its effect on the edges concealed by
deflection and is not Gridstone CleanRoom
1. Thickness: 1/2" recommended where flanges of suspension
panel surface in a hidden members. Cut panels to
2. Width and Length: high humidity is likely to area or on a scrap piece
2' x 2' occur. fit tightly at borders and
before attempting to remove penetrations so that cut
2' x 4' Extreme lighting a field stain. edges are concealed by
conditions may distort Vinyl laminate on face of 2' x trim pieces and
PART 3 texture appearance. 2' Gridstone CleanRoom escutcheons.
3.03 INSTALLATION The use of strong organic panel is directional. Install
A. Install boards in lay-in solvents (such as ketones), with all factory edges
suspension systems with harsh abrasive cleansers or parallel (same direction).
edges concealed by steel wool are not
flanges of suspension recommended. PACKAGING
members. Cut panels These materials may 2' x 2' – 4 pcs./bundle, 16 sq.
to fit tightly at borders cause dulling, discoloration, ft., 80 bundles/Unit
and penetrations so that softening and other Catalog Code – GB5040
cut edges are concealed permanent damage to the 2' x 4' – 4 pcs./bundle, 32 sq.
by trim pieces and vinyl surface. ft., 40 bundles/Unit
escutcheons. Gridstone CleanRoom Catalog Code – GB5030
panels are USDA accepted All bundles are double-
for use in food service and wrapped with long corner
food processing areas. protectors.

NATIONAL GYPSUM BOARD PRODUCTS 87

 Gridstone® BRAND Hi-Strength Ceiling Panels
DESCRIPTION TECHNICAL DATA DECORATION
Gridstone Hi-Strength Ceiling
Gridstone® BRAND Hi-Strength panels are factory-finished
SURFACE BURNING decorative products which
prefinished ceiling panels CHARACTERISTICS
have a non-combustible do not require painting.
ASTM E 84 However, if desired,
high strength gypsum core
formulated with increased Flame Spread: 5 Gridstone can be painted
uniformity and integrity Smoke Developed: 0 with the following products:
which increases its sag WEIGHT 1. Two coats of alkyd or latex
resistance. enamel.
5/16" Hi-Strength - 1.24 lbs/SF
Gridstone Hi-Strength panels 2. Oil primer with finish coat
can be used for interior and SOUND ATTENUATION of oil or latex paint.
exterior ceiling applications ASTM E 1414 Test Method
in protected, well-ventilated 3. Two coats of latex paint.
spaces that receive Ceiling Attenuation Class
PACKAGING
intermittent exposure to (CAC)-41 dB 2' x 2' – 6 pcs./bundle, 24 sq.
moisture. LIGHT REFLECTANCE ft., 80 bundles/Unit
Lightweight. Gridstone LR 1 (75% or greater) Catalog Code – GB5020
Hi-Strength 5/16" panels 2' x 4' – 6 pcs./bundle, 48 sq.
are 40% lighter in weight RECOMMENDATIONS ft., 40 bundles/Unit
than standard gypsum Catalog Code – GB5010
ceiling panels. All bundles are double-
Quick, dry installation. Gridstone Hi-Strength ceiling wrapped with long corner
Gridstone Hi-Strength panels are designed to be protectors.
Ceiling panels score and mounted in standard 15/16"
snap clean and install exposed tee grid systems
or environmental type SPECIFICATIONS
easily in standard
exposed grid systems. grids for severe conditions,
with grids either 2' x 2' THE FOLLOWING PARAGRAPHS ARE
Pre-decorated. The sturdy or 2' x 4'. Grid installation FOR INSERTION INTO SECTIONS OF
white vinyl laminate should be conducted GENERIC SPECIFICATIONS OR
eliminates additional according to manufacturer's GENERIC/PROPRIETARY SPECIFICATIONS
finishing. specification. COVERING GYPSUM BOARD
Do not install panels in PRODUCTS. THE NATIONAL GYPSUM
Each panel must be supported PRODUCT NAME FOLLOWS THE GENERIC
areas exposed to on all four (4) edges.
continuous high humidity DESCRIPTION IN PARENTHESES.
such as saunas, steam Cross ventilation must be
rooms, gang showers, and provided in unheated or PART 2
indoor pools per ASTM enclosed space above
ceiling panels. 2.02 MATERIALS
C840, 17.3.1.1.
General: Install panels in lay- A. Vinyl laminated Gypsum
For exterior application, Grid board: A gypsum
protect grid panels from in suspension systems with
edges concealed by flanges core lay-in ceiling panel
direct exposure to with additives to enhance
weather, water and of suspension members. Cut
panels to fit tightly at sag resistance of the
continuous high core; surfaced with paper
humidity. Under no borders and penetrations so
that cut edges are on the front and back and
circumstances should finished on the front with
water be in contact with concealed by trim pieces
and escutcheons. a 2 mil, white, stipple
the back of the panels. textured vinyl laminate;
Overlaid insulation may Cleaning: Common dirt and and complying with
cause excessive panel stains on the vinyl surface ASTM C 1396, Class 1,
deflection and is not can be removed with mild E 1264 Type XX, Patterns
recommended. These soap or detergent in E, G (Gridstone BRAND Hi-
materials may cause lukewarm water. Use a light Strength Ceiling Panels)
dulling, discoloration, scrubbing action with a
cloth, sponge or soft brush. 1. Thickness: 5/16"
softening and other
permanent damage to the If the suitability of any 2. Width and length:
vinyl surface. cleaning agent is unknown, 2' x 2'
Gridstone Hi-Strength check its effect on the 2' x 4'
panels are not listed in Gridstone Hi-Strength panel
fire-rated assemblies. surface in a hidden area PART 3
before attempting to remove 3.03 INSTALLATION
USDA Acceptance: Gridstone a field stain.
Hi-Strength panels are A. Install panels in lay-in
accepted by the USDA for NOTE: Vinyl laminate on suspension systems with
use in food service and food face of 2' x 2' Gridstone edges concealed by
processing areas. Hi-Strength panel is flanges of suspension
directional. Install with all members. Cut panels to
factory edges parallel (same fit tightly at borders and
direction). penetrations so that cut
edges are concealed by
trim pieces and escutcheons.

88 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC
Gold Bond® BRAND Foil Back Gypsum Board
DESCRIPTION LIMITATIONS TECHNICAL DATA Boards of maximum
1. Not recommended for practical length should be
Gold Bond® Foil Back Gypsum use where exposure to SURFACE BURNING used so that an absolute
Board consist of a fire- moisture and high outside CHARACTERISTICS minimum number of end
resistive gypsum core temperature is extreme and joints occur. Board edges
(ASTM E 84) should be brought into
encased in heavy natural- continuous. Under these
finish paper on the face side conditions, a qualified Flame spread: 15 contact with each other but
and strong liner paper on the mechanical engineer Smoke developed: 0 should not be forced into
backside to which aluminum should determine location place.
WEIGHT
foil is laminated. The ends of the vapor retarder. Gypsum board joints at
are square cut and finished 1/2" Regular - 1.6 lbs/SF openings should be located
2. Not to be used as a base for
smooth. ceramic or other tile or as a 5/8" Type X - 2.2 lbs/SF so that no end joint will
BASIC USES base layer for prefinished align with edges of openings
vinyl wall boards in double- unless control joints will be
Foil Back Gypsum Board can be FIRE RESISTANCE RATINGS installed at these points.
used for exterior walls and layer assemblies. Also, not
to be used as a base for Foil Back Gypsum Board has End joints should be
ceilings in new construction not been used in fire staggered, and joints on
and remodeling. The adhesively applied vinyl or
other highly water-vapor- resistance tests. Fire opposite sides of a partition
aluminum foil, laminated to resistance ratings represent should not occur on the
the back surface, is a vapor resistant wall coverings.
the results of tests on same stud.
retarder to keep interior 3. To prevent objectionable
sag in ceilings, weight of assemblies made up of Gypsum board should be
moisture within the building specific materials in a
at a suitable comfort level. For overlaid unsupported held in firm contact with
insulation should not exceed: specific configuration. the framing member while
use with furred masonry, When selecting
wood or steel framing, Gold 1.3 lb./sq. ft. for 1/2" thick fasteners are being driven.
boards with frame spacing construction designs to Fastening should proceed
Bond Foil Back Gypsum meet certain fire resistance
Board is effective for single- 24" o.c.; 2.2 lb./sq. ft. for from center portion of the
boards with frame spacing requirements, caution must gypsum board toward the
layer applications and as a be used to ensure that each
base layer in double-layer 16" o.c. Boards 3/8" thick edges and ends. Fasteners
must not be overlaid with component of the assembly should be set with the heads
applications where a vapor is the one specified in the
retarder of 1.0 perm or less is unsupported insulation. slightly below the surface
Unheated attic spaces should test. Further, precaution of the gypsum board in a
required. should be taken that
be properly ventilated. dimple formed by the
ADVANTAGES assembly procedures are in hammer or power
1. In tests conducted according 4. Foil Back Gypsum Board is accordance with that of the screwdriver. Care should

09 29 00
to ASTM Test Procedure E 96 not recommended for use tested assembly. (For be taken to avoid breaking
(desiccant method), 1/2" Foil in hot, humid, climates such copies of specific tests, the face paper of the
Back Gypsum Board showed as the Southern Atlantic and call 1-800-NATIONAL or gypsum board. Improperly
a performance of 0.06 perm Gulf Coast areas. 1-800-628-4662.) driven nails or screws shall
compared to 34 perm for MATERIALS be removed.
1/2" regular gypsum board RECOMMENDATIONS For best painting results, all
and 28 perm for 1/2" gypsum Manufactured boards with interior surfaces, including
board with two coats of flat gypsum core, paper-encased
with aluminum foil Examine and inspect materials joint compound, should be
latex paint. to which gypsum board is clean, dust-free and not
laminated backing.
2. In-place cost of Foil Back to be applied. Remedy all glossy. To improve fastener
Gypsum Board installation is SIZES AND TYPES defects prior to installation and joint concealment, a
lower per thousand sq. ft. Thickness Width Length of gypsum board. Any prime coat of drywall
than a similar installation for 1/2" 4' 6' to 16' defects in the finished primer is recommended to
regular gypsum board and 5/8" 4' 6' to 16' installation due to equalize the porosities
polyethylene-film retarder Edges: Square, tapered or misaligned framing or between surface paper and
installed separately. Sta-Smooth. other cause will be the joint compound.
3. Easy-to-handle Foil Back responsibility of the work See page 63, Environmental
Gypsum Board is adaptable to APPLICABLE STANDARDS performed under that Conditions and Limitations.
virtually all exterior wall and ASTM C 1396 section of the specification
ceiling construction: wood and such defects shall be
frame, furred masonry. remedied under that
secton of the specification
Gypsum board should be
applied first to ceiling at
right angles to framing
members, then to walls.

NATIONAL GYPSUM BOARD PRODUCTS 89

 GYPSUM SYSTEMS
Nonload-Bearing Steel Frame Partitions
DESCRIPTION
Steel framed drywall partitions and the steel studs acting as are waterproofed.
are comprised of steel floor a composite section to 5. To prevent weakening
and ceiling tracks, steel provide a maximum due to calcining, gypsum
studs and Gold Bond deflection of L/120, L/240, board should not be
Gypsum Board which is L/360 exposed to temperatures
attached with self-drilling (L = partition height in over 125˚F for extended
drywall screws. Metal inches) with a horizontal periods of time.
products are to meet or load of 5 psf, 7.5 psf, and
exceed all applicable 10 psf of partition surface. 6. Gypsum board joints on
ASTM standards. single layer, or the face
Increased rigidity may be layer on two layer
Gypsum board may be obtained by placing applications, shall not
applied horizontally or stiffener channels through occur within 12" of the
vertically in single or the steel stud cut-outs, by corners of door frames
double layers. In double using two layer application unless control joints are
layer construction, the face, of gypsum board or by installed at the corners.
or finish layer, may be decreasing stud spacing.
Durasan panels adhesively 7. For limitations regarding
Standard 25 and 20 gauge selection of doors and
applied to the base layer. studs, recommended for
For specific fire and sound doorframes, refer to table
interior partitions, have on page 92.
ratings for this system, see height limits as shown in
test data on pages 11 Tables 1 and 2. Gypsum 8. Where reference is made
through 26. board must be attached to to nominal gauges, 25
full height on both sides of gauge relates to a
ADVANTAGES minimum base steel of
studs with Type S Bugle
1. Openings provided Head Drywall Screws .0179", and 20 gauge to
throughout the length of (Type S-12 for 20 gauge .0329".
the steel studs permit the studs) spaced not more
easy horizontal routing of than 12" o.c. on all studs
water, gas and electrical when framing is 24" o.c.
conduit. These openings and 16" o.c. if framing is
may also be used to install 16" o.c. or less. Screw
C.R. Channel stiffeners lengths must be not less
where increased rigidity is than 3/8" greater than the
required. Interruption of the total thickness of the
floor or ceiling track allows gypsum board being
the vertical installation of fastened.
larger utilities.
Light steel 20 gauge studs are
2. Fire resistance: 1-, 2-, 3- designed for exterior,
and 4-hour fire ratings have nonload-bearing curtain
been assigned to these wall systems, but are also
systems (see pages 11-26). used for interior partitions
3. Sound resistance: where to provide more ridigity or
a superior Sound greater heights than can be
Transmission Class is obtained with Standard 25
required, it can be gauge studs.
achieved through the use
of several variations with LIMITATIONS
this system. 1. Maximum stud spacing for
single layer application of
TECHNICAL DATA 1/2" and 5/8" gypsum
board is 24" o.c. If 3/8"
PARTITION HEIGHTS gypsum board is used, it
must be applied in two
Light Gauge Steel Studs are layers, with the second
designed to frame nonload- layer adhesively applied;
bearing partitions which 24" o.c. stud spacing may
are limited in height by be used.
deflection resulting from
extraneous horizontal 2. Where long, continuous
forces. For any given runs of this wall system are
horizontal load, the amount employed, control joints
of deflection increases as must be provided every 30'
the height of the partition or less.
increases. 3. Where structural movement
Tables 1 and 2 on the next may impose direct loads on
page show maximum these systems, isolation
partition heights based on details are required.
specific design criteria. The 4. Partitions should not be
height limits shown are used where frequently
based on the gypsum board exposed to excessive
moisture unless all surfaces

90 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC

Table 1 Table 2

25 GAUGE STUDS/PARTITION LIMITING HEIGHTS 20 GAUGE STUDS/PARTITION LIMITING HEIGHTS

Stud Stud Deflection Lateral Pressure Stud Stud Deflection Lateral Pressure
5 psf 7.5 psf 10 psf 5 psf 7.5 psf 10 psf
Depth Spacing Limit (240 Pa) (360 Pa) (480 Pa) Depth Spacing Limit (240 Pa) (360 Pa) (480 Pa)
1-5/8 in. 12 in. L/120 11-2 (3400) 9-9 (2970) 8-10 (2690) 1-5/8 in. 12 in. L/120 13-0 (3960) 11-4 (3450) 10-4 (3150)
(41.3mm) (305mm) L/240 8-10 (2690) (41.3mm) (305mm) L/240 10-4 (3150) 9-0 (2740)
L/360 L/360 9-0 (2740)
16 in. L/120 10-7 (3230) 8-10 (2690) 8-4 (2540) 16 in. L/120 12-1 (3680) 10-7 (3230) 9-8 (2950)
(406mm) L/240 8-4 (2540) (406mm) L/240 9-8 (2950) 8-5 (2570)
L/360 L/360 8-5 (2570)
24 in. L/120 9-9 (2970) 8-0 (2440) 24 in. L/120 11-0 (3350) 9-7 (2920) 8-9 (2670)
(610mm) L/240 7-11 (2410) (610mm) L/240 8-9 (2670) 7-8 (2340)
L/360 L/360 7-8 (2340)
2-1/2 in. 12 in. L/120 15-1 (4600) 12-4 (3760) 10-9 (3280) 2-1/2 in. 12 in. L/120 17-9 (5410) 15-6 (4720) 13-11 (4240)
(63.5mm) (305mm) L/240 11-11 (3630) 10-5 (3180) 9-6 (2900) (63.5mm) (305mm) L/240 13-11 (4240) 12-1 (3680) 10-11 (3300)
L/360 10-5 (3180) 9-1 (2770) L/360 12-1 (3680) 10-6(3200) 9-5 (2870)

16 in. L/120 13-3 (4040) 10-10 (3300) 9-5 (2570) 16 in. L/120 16-5 (5000) 14-4 (4370) 12-10 (3910)
(406mm) L/240 11-3 (3430) 9-10 (3000) 8-11 (2720) (406mm) L/240 12-10 (3910) 11-2 (3400) 10-0 (3050)
L/360 9-10 (3000) 8-7 (2620) L/360 11-2 (3400) 9-8 (2950) 8-8 (2640)

24 in. L/120 11-10 (3610) 9-8 (2950) 8-5 (2570) 24 in. L/120 14-10 (4520) 13-0 (3960) 11-7 (3530)
(610mm) L/240 10-7 (3230) 9-3 (2820) 8-5 (2570) (610mm) L/240 11-7 (3530) 10-0 (3050) 8-11 (2720)
L/360 9-3 (2820) 8-1 (2460) L/360 10-0 (3050) 8-7 (2620) 7-8 (2340)

3-1/2 in. 12 in. L/120 17-8 (5380) 14-3 (4340) 12-5 (3780) 3-1/2 in. 12 in. L/120 22-6 (6860) 19-8 (5990) 17-10 (5440)
(88.9mm) (305mm) L/240 15-4 (4670) 13-3 (4040) 12-0 (3660) (88.9mm) (305mm) L/240 17-10 (5440) 15-6 (4720) 14-1 (4290)
L/360 13-3 (4040) 11-7 (3530) 10-5 (3180) L/360 15-6 (4720) 13-7 (4140) 12-4 (3760)

09 29 00
l6 in. L/120 15-4 (4670) 12-5 (3780) 10-9 (3280) 16 in. L/120 20-8 (6300) 18-1 (5510) 16-5 (5000)
* (406mm) L/240 14-4 (4370) 12-5 (3780) 10-9 (3280) * (406mm) L/240 16-5 (5000) 14-3 (4340) 12-11 (3940)
L/360 12-4 (3760) 10-10 (3300) 9-9 (2970) L/360 14-3 (4340) 12-6 (3810) 11-4 (3450)

24 in. L/120 13-9 (4190) 11-0 (3350) 9-5 (2870) 24 in. L/120 18-6 (5640) 16-2 (5840) 14-9 (4500)
(610mm) L/240 13-5 (4090) 11-0 (3350) 9-5 (2870) (610mm) L/240 14-9 (4500) 12-9 (3890) 11-7 (3530)
L/360 11-7 (3530) 10-1 (3070) 9-1 (2770) L/360 12-9 (3890) 11-2 (3400) 10-1 (3070)

4 in. 12 in. L/120 19-6 (5940) 15-9 (4800) 13-8 (4170) 4 in. 12 in. L/120 25-1 (7650) 21-11 (6680) 19-11(6070)
(101.6mm) (305mm) L/240 16-5 (5000) 14-4 (4370) 13-0 (3960) (101.6mm) (305mm) L/240 19-11 (6070) 17-4 (5280) 15-8 (4780)
L/360 14-4 (4370) 12-6 (3810) 11-4 (3450) L/360 17-4 (5280) 15-0 (4570) 13-7 (4140)

16 in. L/120 17-2 (5230) 13-10 (4220) 11-11(3630) 16 in. L/120 23-1 (7040) 20-2 (6150) 18-4 (5590)
(406mm) L/240 15-4 (4670) 13-4 (4060) 11-11(3630) (406mm) L/240 18-4 (5590) 15-11 (4850) 14-5 (4390)
L/360 13-4 (4060) 11-8 (3560) 10-6 (3200) L/360 15-11 (4850) 13-9 (4190) 12-6 (3810)

24 in. L/120 15-1 (4600) 12-1 (3680) 10-5 (3180) 24 in. L/120 20-9 (6320) 18-1 (5510) 16-5 (5000)
(610mm) L/240 14-2 (4320) 12-1 (3680) 10-5 (3180) (610mm) L/240 16-5 (5000) 14-3 (4340) 12-10 (3910)
L/360 12-4 (3760) 10-9 (3280) 9-9 (2970) L/360 14-3 (4340) 12-4 (3760) 11-2 (3400)

6 in. 12 in. L/120 22-10 (6960) 18-7 (5660) 16-2 (4930) 6 in. 12 in. L/120 33-9 (10290) 29-6 (8990) 26-9 (8150)
(152.4mm) (305mm) L/240 22-1 (6730) 18-7 (5660) 16-2 (4930) (152.4mm) (305mm) L/240 26-9 (8150) 23-5 (7140) 21-3 (6480)
L/360 19-4 (5890) 16-9 (5110) 15-0 (4570) L/360 23-5 (7140) 20-6 (6250) 18-7 (5660)

16 in. L/120 19-9 (6020) 16-2 (4930) 14-0 (4270) 16 in. L/120 30-10 (9400) 27-0 (8230) 24-6 (7470)
(406mm) L/240 19-9 (6020) 16-2 (4930) 14-0 (4270) (406mm) L/240 24-6 (7470) 21-4 (6500) 19-5 (5920)
L/360 17-11 (5460) 15-7 (4750) 3-10 (4220) L/360 21-4 (6500) 18-9 (5720) 17-0 (5180)

24 in. L/120 16-9 (5110) 13-5 (4090) 11-5 (3480) 24 in. L/120 27-2 (8280) 23-10 (7260) 19-1 (5820)
(610mm) L/240 16-9 (5110) 13-5 (4090) 11-5 (3480) (610mm) L/240 21-7 (6580) 18-10 (5740) 17-3 (5260)
L/360 16-9 (5110) 13-5 (4090) 11-5 (3480) L/360 18-10 (5740) 16-7 (5050) 15-0 (4570)

Note: Limiting height tables adapted with permission from ASTM C 754. Copyright ASTM.
Tables based on tests conducted with gypsum board attached with screws
12" o.c. to framing.

*Applicable for 3 5/8" stud depth.

NATIONAL GYPSUM BOARD PRODUCTS 91

 SINGLE LAYER CONSTRUCTION
STEEL TRACK
FASTEN JAMB STUDS TO TRACK
TOP AND BOTTOM CHASE WALL

TRACK - CUT AND

BENT DOWN

1/2" GYPSUM
BOARD OR
STUD TRACK
12" 2 SCREWS
PER STUD
(ALTERNATE)

16' MAX. HEIGHT

C.R. CHANNEL
STIFFENERS
FRICTION FIT 3 DRYWALL
(OPTIONAL) SCREWS
PER STUD
48"
MAX.
TAPE AND JOINT
COMPOUND

STEEL DOOR FACE GYPSUM BOARD (APPLIED

FRAME IN NORMAL MANNER)
JAMB
ANCHORS
20" MAX. WIDTH
PER ASTM C754

FRAMING REQUIREMENTS AT DOORS

(Type of Door Frame) (Special Details) Partition Height Limits*
Jamb Steel Studs Knock Knock Bracing Requires Stud Size
Door Min. Down Down Fixed Over Mechanical 1 5/8" 2 1/2" 3 5/8" 4" 6"
Weight Base Steel, In. Alum. Steel Steel Headers Closure (41.3mm) (63.5mm) (92.1mm) (102mm) (152mm)
Up to 0.0179 x x x NA** 10'(3048mm) 14'(4267mm) 15'(4572mm) 14'(4267mm)
50 lbs. 0.0179 x x x x 10'(3048mm) 12'(3657mm) 16'(4876mm) 17'(5181mm) 16'(4876mm)
(23 kg) 0.0329 x x x x – 16'(4876mm) 21'(6400mm) 22'(6705mm) 22'(6705mm)
0.0179 x x x – 10'(3048mm) 14'(4267mm) 15'(4572mm) 14'(4267mm)
0.0179 x x x 10'(3048mm) 12'(3657mm) 14'(4267mm) 15'(4572mm) 14'(4267mm)
0.0179 x x x 12'(3657mm) 14'(4267mm) 16'(4876mm) 17'(5181mm) 16'(4876mm)
50 lbs.
(23 kg) to 0.0329 x 10'(3048mm) 14'(4267mm) 15'(4572mm) 15'(4572mm)
80 lbs. 0.0329 x x x 12'(3657mm) 16'(4876mm) 17'(5181mm) 17'(5181mm)
(36 kg) 0.0329 x x x 12'(3657mm) 16'(4876mm) 17'(5181mm) 17'(5181mm)
0.0329 dbl. web to web x 16'(4876mm) 21'(6400mm) 22'(6705mm) 22'(6705mm)
0.0329 dbl. web to web x x 16'(4876mm) 21'(6400mm) 22'(6705mm) 22'(6705mm)
80 lbs. 0.0179 x x x 12'(3657mm) 14'(4267mm) 15'(4572mm) 14'(4267mm)
(36 kg) to
120 lbs. 0.0329 x x x x 12'(3657mm) 16'(4876mm) 17'(5181mm) 17'(5181mm)
(54 kg) 0.0329 dbl. web to web x x 16'(4876mm) 21'(6400mm) 22'(6705mm) 22'(6705mm)
* For a specific partition having a door opening compare above partition height limits with height tables on page 88. The lower height table governs.
** NA – Not Allowed.

92 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC
Drywall Metal Framing*

25 & 20 GAUGE STUDS FURRING CHANNEL

”C” shaped metal studs fabricated Used as cross furring members
from galvanized steel. 20 gauge for attachment of gypsum board
studs are for curtainwall con- or lath on ceiling or furred
struction or more rigid partitions. masonry walls.

25 & 20 GAUGE TRACK RESILIENT FURRING CHANNEL

Fastened at floor and ceiling to Used as cross furring members
support the steel studs. Track for attachment of gypsum board
is channel-shaped and fab- and improves sound isolation on
ricated from galvanized steel. ceilings and partitions.

09 29 00
Z FURRING CHANNEL FLOOR & CEILING RUNNER
Generally used on the inside of 2" x 2" 20 GAUGE
exterior masonry walls to support Used as a utility floor and ceiling
rigid foam insulation and to runner. Also used in vertical
provide a fastening surface for shaftwall inside corner
gypsum board. application.

COLD ROLLED CHANNEL L RUNNER

Used in suspended ceilings and Perforated – Ceiling or floor
as stiffeners in stud partitions. support for 2" solid lath and
plaster partition.
Plain – Ceiling support for 2"
solid gypsum board partition
using 1" shaftliner.

*Metal products are not manufactured by National Gypsum Company

NATIONAL GYPSUM BOARD PRODUCTS 93

Accessories*
GYPSUM BOARD ARCH CORNERBEAD
CORNERBEAD Can be used straight for exterior
Used to reinforce exterior corners or flanges, or may be
gypsum board corners. For use snipped and bent to form arches.
with all gypsum board
thicknesses, single or double
layer application.

J GYPSUM BOARD CASING E-Z STRIP® EXPANSION JOINT

Provides a finished edge at door Designed for drywall or veneer
and window jambs by slipping plaster systems. A vinyl
over edge. Is face nailed and extrusion used as an expansion
exposed surface finished with or control joint for ceilings or
joint treatment. partitions.

J GYPSUM BOARD CASING .093 ZINC CONTROL JOINT

(Reveal Trim) Designed as an expansion or
Used at door, window, inside control joint for ceiling and
corners when facing must be partition areas for both drywall
isolated from abutting elements. or veneer plaster systems.
Requires no joint treatment finish.

L GYPSUM BOARD CASING

Used as a finished edge at door
and window jambs. Is face nailed
and exposed surface finished
with joint treatment.

*Accessories are not manufactured by National Gypsum Company

94 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC

DETAILS

3 5/8" STEEL STUD

LOCATE AT ABUTTING WALL
AND ATTACH THRU GYPSUM
STUD SPLICE BOARD TO STUD IN
ABUTTING WALL

16" LENGTH OF
TRACK
STUDS BUTTED

4 PAN HEAD
SCREWS EACH
SIDE

CORNERBEAD – TYPICAL 5/8" GYPSUM BOARD – NUMBER OF

LAYERS DETERMINED BY PARTITION TYPE

CORNER DETAIL
09250E
Scale 3" = 1'-0"

STEEL STUD

STEEL STUD

09 29 00
TAPE AND JOINT TAPE AND JOINT
COMPOUND COMPOUND

GYPSUM
BOARD
ALTERNATE PARTITION
PARTITION INTERSECTION INTERSECTION
09250F 09250G
Scale: 3" = 1'-0" Scale: 3" = 1'-0"

E-Z STRIP VINYL

EXPANSION JOINT

VENEER PLASTER OR
JOINT COMPOUND ADHESIVE

KAL-KORE OR
GYPSUM BOARD

STEEL
STUD

CASING

CAULKING MASONRY WALLS

OR COLUMN

JOINT WHERE WALL FRAMING CHANGES

09250CC
Scale: 3" = 1'-0"

NATIONAL GYPSUM BOARD PRODUCTS 95

 FURRING CHANNEL CLIP
CEILING TRACK FURRING CHANNEL
DRYWALL
CASING
CAULK
1 1/2" C.R.
CHANNEL

TOGGLE BOLT
OR MOLLY DRYWALL
CASING

STEEL STUD
FURRING TYPE S
TAPE AND CHANNEL DRYWALL
JOINT SCREW
COMPOUND
STEEL STUD TRACK
ATTACHMENT TO CONCRETE SLAB
09250H STEEL STUD ATTACHMENT TO
Scale: 3" = 1'-0" FURRED CEILING
09250J
Scale: 3" = 1'-0"
ATTACHMENT TO
SUSPENDED CEILING E-Z STRIP
CONTROL JOINT
09250I
STEEL STUD
Scale: 3" = 1'-0"

JAMB STUD
TRACK
SEALANT

WOOD TRIM

DOOR HEAD DETAIL - WOOD WALL CONTROL JOINT

09250K 09250M
Scale: 3" = 1'-0" Scale: 3" = 1'-0"

DOOR JAMB DETAIL - WOOD

09250N
1/2" E-Z STRIP VINYL
Scale: 3" = 1'-0" 5/8" FIRE-SHIELD GAP EXPANSION JOINT
STEEL STUD

JAMB ANCHOR CLIP

5/8" GAP 1 5/8" DRYWALL
STEEL STUD SCREWS
24" O.C.

METAL FRAME

TRACK
2 1/2" STEEL STUDS 5/8" FIRE-SHIELD STRIPS

DOOR HEAD DETAIL - METAL ONE HOUR FIRE RATED CONTROL JOINT DETAIL
09250L Based on Warnock Hersey Report No. WHI-651-0318.1
Scale: 3" = 1'-0" and Factory Mutual Design No. W 1B-1 hr.
DOOR JAMB DETAIL - METAL 09250P
09250O Scale: 3" = 1'-0"
Scale: 3" = 1'-0"
STEEL
STUD TAPE AND JOINT
COMPOUND
GYPSUM DRYWALL CORNERBEAD
BOARD

STEEL
STUD
WOOD BASE

RESILIENT
COVE BASE

FLOOR TRACK
BASE DETAIL PARTITION END DETAIL BUTT JOINT DETAIL
09250Q
09250R 09250S
Scale: 3" = 1'-0"
Scale: 3" = 1'-0" Scale: 3" = 1'-0"

96 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC

RECOMMENDATIONS SPECIFICATIONS

1. FRAMING THE FOLLOWING PARAGRAPHS ARE FOR INSERTION INTO SECTIONS OF

Align floor and ceiling tracks to ensure plumb partition. GENERIC SPECIFICATIONS COVERING METAL FRAMING PRODUCTS.
Secure track with suitable fasteners at a maximum of 24" VERIFY DESCRIPTIONS OF METAL FRAMING PRODUCTS WITH
o.c. Position studs in track on 16" or 24" centers by MANUFACTURER.
rotating into place for a friction fit. Steel studs shall be PART 2 PRODUCTS
installed with all flanges pointed in the same direction.
Secure studs located adjacent to door and window frames, 2.02 MATERIALS
partition intersections and corners with 3/8" Pan Head A. METAL FRAMING
Type S Screws driven through both flanges of studs and 1. Studs: 1 5/8", 1 1/2", 3 5/8", 4" and 6" C shaped studs,
tracks or by using a stud clincher. weighing 312 lbs., 370 lbs., 448 lbs., 472 lbs., and 607
2. SINGLE LAYER OR FIRST PLY lbs. per 1000 lin. ft. with min. base steel of 0.0179",
Cut gypsum board to allow for a 1/8" to 1/4" gap between galvanized, and complying with ASTM C 645.
gypsum board and floor to prevent potential wicking. 2. Track: 1 5/8", 2 1/2", 3 5/8", 4" and 6" U shaped track
Apply gypsum board with the length parallel or at right angles with 1" legs, weighing 244 lbs., 303 lbs., 378 lbs., 404
to the studs. Center abutting ends or edges over the stud lbs. and 539 lbs. per 1000 lin. ft. with min. base metal of
flanges. 0.0179", galvanized and complying with ASTM C 645.
For metal framing, screws shall be Type S, of a length to 3. 1 5/8", 2 1/2", 3 5/8", 4" and 6" U shaped track with 1
provide not less than 3/8" penetration into framing and 1/4" legs, weighing 278 lbs., 337 lbs., 412 lbs., 438 lbs.
shall be spaced 24" o.c. max. If no adhesive is used, and 572 lbs. per 1000 lin. ft. with min. base metal of
standard fastener spacings shall prevail. 0.0179", galvanized and complying with ASTM C 645.
For non-fire-rated construction, locate all attaching screws 4. Studs: 2 1/2", 3 5/8", 4" and 6" C shaped studs. Studs
12" o.c. when framing is 24" o.c. and 16" o.c. when weighing 679 lbs., 817 lbs., 867 lbs. and 1105 lbs. per
framing is 16" o.c. or less. For fire-rated construction, 1000 lin. ft. with min. base metal of 0.0329", galvanized
vertical application, space screws 12" o.c. in the field and and complying with ASTM C 645.
8" o.c. along the vertical abutting edges unless otherwise 5. Track: 2 1/2", 3 5/8", 4" and 6" U shaped track with
specified. Attach the gypsum board to Steel Studs with 1.177" legs, weighing 604 lbs., 740 lbs., 785 lbs. and
Type S Drywall Screws using an electric, drywall 1027 lbs. per 1000 lin. ft. with min. base metal of
screwdriver with a #2 Phillips bit. For vertical gypsum 0.0329", galvanized and complying with ASTM C 645.
board application with studs 24" o.c., erect the gypsum 6. Z Furring Channels: 1", 1 1/2" and 2" Z shaped channels,

09 29 00
board on one side of the partition, screw attaching to open weighing 201 lbs., 236 lbs. and 268 lbs. per 1000 lin. ft.
end of stud flange first at vertical gypsum board joints. with min. base steel of 0.0179", galvanized and
Complete the gypsum board application to the entire side complying with ASTM C 645.
of the partition in this manner. For the opposite side, cut
the first gypsum board 2' wide so that joints will be 7. Floor & Ceiling Runner: L shaped runner weighing 545
staggered. Fasten this and succeeding gypsum boards to all lbs. per 1000 lin. ft. with min. base steel of 0.0329",
studs on this side. When partition face is complete, return galvanized.
to the first side and complete screw attachment of gypsum PART 3 EXECUTION
board to all intermediate studs. 3.01 INSTALLATION
Make door and window framing openings of such size that A. General: In accordance with ASTM C 754, the
when the gypsum board is secured to the studs, it will fit manufacturer’s recommendations and National Gypsum
snugly into the steel frames. Company “Gypsum Construction Guide.”
3. FACE LAYER
Mechanical attachment of face layer for fire or sound rated
constructions shall be made in accordance with the
specifications for the system selected. When the face ply is
attached with mechanical fasteners and with no adhesive
between plies, the maximum spacing and minimum
penetration recommended for screws should be the same
as for single ply application.

NATIONAL GYPSUM BOARD PRODUCTS 97

 INSTALLATION

SHELF BRACKET SHELF BRACKET

BETWEEN STUDS 1" X 3" X 12" WOOD BLOCKS LAMINATE OR
SCREW ATTACHED TO BACK OF GYPSUM
GYPSUM BOARD BOARD BETWEEN STUDS

GYPSUM BOARD
SHELF
BRACKET
STEEL STUD SHELF
STEEL
STUD BRACKET
2 1/2" #14 4" MIN. BEARING
WOOD SCREWS 6" MIN. (1" MIN.
SEE CHART BELOW BRACKET
MIN. 12" LONG FOR SHELF BRACKET WIDTH)
WOOD FILLER ALLOWABLE LOADS
BLOCK CUT FOR
SNUG FIT INSIDE
STUD SHELF BRACKET BEARING 1 1/2" #10 WOOD SCREWS
(1" MIN. BRACKET WIDTH)

EXTRA HEAVY LOADS 3 5/8" STEEL STUDS. 24" O.C.

SHELF BRACKET BETWEEN STUDS
Allowable Load With Wood Blocks 16 GAUGE STEEL STUD OR U S-12 SCREWS. 16" O.C.
CHANNEL TO FLOOR
Wood Block with 1/2" (12.7 mm) gypsum board 40 ft. lbs. per bracket (54 N-M)
Wood Block with 5/8" (15.9 mm) gypsum board 70 ft. lbs. per bracket (95 N-M)
Allowable Load With Sheet Metal (.0239)
0.12 L MIN.
.0239 sheet metal substituted 40 ft. lbs. per bracket (54 N-M)
for wood with 1/2" (12.7 mm) gypsum board
.0239 sheet metal substituted 50 ft. lbs. per bracket (68 N-M)
L
for wood with 5/8" (15.9 mm) gypsum board
(PARTITION
HEIGHTS) 6" MIN. 0.12 L MIN.

SHELF BRACKET
Allowable Load 1/4" DIA. BOLT NUT
Wood Block 80 ft. lbs. per bracket (108 N-M) – 2' o.c. (610 mm) & WASHER
40 ft. lbs. per bracket (54 N-M) – 4' o.c. (1219 mm)
2 LAYERS 5/8" GYPSUM BOARD BOTH
Without filler blocks using 50 ft. lbs. per bracket (68 N-M) – 2' o.c. (610 mm) SIDES (SCREWS 12" O.C. BOTH SIDES)
min. #10 sheet metal screws 25 ft. lbs. per bracket (34 N-M) – 4' o.c. (1219 mm)
into screw stud ALLOWABLE LOAD 700 ft. lbs. per bracket.

GYPSUM BOARD FASTENERS

Allowable Load
FLUSH-TO-WALL ATTACHMENTS Type 1/2" (12.7 mm) 5/8" (15.9 mm)
Fastener Size Gypsum Board Gypsum Board
Hollow 1/8" (3.2 mm) dia. SHORT 50 lbs.(23 kg) —
STEEL ANGLE Wall 3/16" (4.8 mm) dia. SHORT 65 lbs.(29 kg) —
OUTSTANDING LEG Screw 1/4" (6.4 mm), 5/16" (7.9 mm) 65 lbs.(29 kg) —
1" WIDE MAX. Anchors 3/8" (9.4 mm) dia. SHORT — 90 lbs.(41 kg)
3/16" (4.8 mm) dia. LONG — 95 lbs.(43 kg)
1/4" (6.4 mm), 5/16" (7.9 mm),
3/8" (9.4 mm) dia. LONG
Common 1/8" (3.2 mm) dia. 30 lbs.(14 kg) 90 lbs.(41 kg)
Toggle 3/16" (4.76 mm) dia. 60 lbs.(27 kg) 120 lbs.(54 kg)
Bolts 1/4" (6.4 mm), 5/16" (7.9 mm), 80 lbs.(36 kg) 120 lbs.(54 kg)
3/8" (9.4 mm) dia.

GYPSUM BOARD FASTENERS HOLLOW WALL COMMON

SCREW ANCHOR TOGGLE BOLT

98 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC
Steel Frame Ceilings/Furring Channels or Studs
DESCRIPTION RECOMMENDATIONS DETAILS

There are three types of steel DIRECT ATTACHMENT SPLICE JOINT FOR STUDS
furring members for the 1. Space and position furring
screw attachment of channels in accordance
gypsum board ceilings. with manufacturer
1. Furring Channels recommendation. Wire tie 4 PAN HEAD SCREWS
Resilient Furring Channels, EACH SIDE
2. Resilient Furring Channels
Steel Studs or Furring
3. Steel Studs Channels as shown on
All three are suitable for page 100.
fastening to the lower 2. Apply gypsum board with
chord of steel joists or to its long dimension at right
carrying channels in angles to the channels.
suspended ceiling 16" LENGTH
Locate gypsum board butt OF TRACK
constructions. Furring joints over the center of the
Channels are secured with furring channels. Attach
clips or tie wires. Resilient gypsum board with 1" self-
Furring Channels shall be drilling drywall screws 12" FURRING CHANNEL SPLICE JOINT
secured with wire ties. Steel o.c. located not less than
Studs shall be attached 3/8" nor more than 1/2"
with tie wires as shown on from edges.
page 99. Gold Bond
Gypsum Board shall be SUSPENDED 6" MIN.
applied using gypsum 1. Install 1 1/2" channels 4'
drywall screws spaced not o.c. with No. 8 ga. hanger
greater than 12" o.c. wire spaced a maximum of
RECOMMENDATIONS 4' o.c. along carrying
channels. Attach Furring
These furring systems, when Channels spaced not more
employed with normal than 24" o.c. perpendicular
steel joist construction and TIE WIRES
to 1 1/2" C.R. Channels
gypsum board, constitute with double strand of
non-combustible saddle tied No. 16 ga.

09 29 00
construction and, in galvanized tie wire, or 1
addition, fire resistance 1/2" Furring Channel Clips.
ratings are achieved as SPECIFICATIONS
indicated on page 25. 2. Apply gypsum board with
its long dimension at right See CSI Metal Framing
LIMITATIONS angles to the Furring Specifications on page 97.
Lighting and other fixtures Channels. Locate gypsum
shall be supported by board butt joints over the
framing; do not use gypsum center of Furring Channels.
board to support them. Attach gypsum board with
For large expanses of these 1" self-drilling drywall
ceiling systems with screws 12" o.c. in the field
perimeter relief, control of the board 8" or 12" o.c.
joints must be located a at butt joints, located not
maximum of 50' o.c. in less than 3/8" or more than
either direction; without 1/2" from edges.
perimeter relief, 30' o.c.
maximum in either
direction.

NATIONAL GYPSUM BOARD PRODUCTS 99

 INSTALLATION

BAR JOIST
SADDLE TIE WITH DOUBLE STRAND
FURRING NO. 16 GA. GALV. TIE WIRE
CHANNEL

RESILIENT FURRING STEEL STUD SHORT LENGTH

CHANNEL OF TRACK

TIE WIRE
GYPSUM BOARD
(FASTEN WITH TYPE S
DRYWALL SCREWS 12" O.C. MAX.)

FURRING CHANNELS STEEL STUDS IN CEILING SYSTEM

HANGER SPACING
1 1/2" CHANNELS FURRING
4'0" C-TO-C MAX
4'0" C-TO-C MAX CHANNEL

FURRING
CHANNEL

MAX FURRING CHANNEL

GYPSUM BOARD SPACING 24" C-TO-C
MAIN RUNNER

FURRING CHANNEL DETAILS SADDLE TIE

HANGER WIRE,
1 1/2" CHANNEL PEICE 16" 1 1/2" CHANNEL
FURRING CHANNEL CLIP,
LONG-NESTED (TWO WIRE
OR WIRE TIE
TIES EACH SIDE)

FURRING CHANNEL

KAL-KORE OR GYPSUM VENEER PLASTER OR JOINT

3" MAX VINYL “E-Z STRIP” JOINT COMPOUND
BOARD
CONTROL JOINT PARALLEL TO FURRING CHANNELS

FURRING CHANNEL CLIP

HANGER WIRE SHORT PIECE OF
OR WIRE TIE
FURRING CHANNEL
LOOSE WIRE TIES
INVERTED FOR SPLICE
1 1/2" CHANNEL

FURRING
CHANNEL

KAL-KORE OR GYPSUM VENEER PLASTER OR JOINT

BOARD VINYL
“E-Z STRIP” COMPOUND
JOINT
CONTROL JOINT PERPENDICULAR TO FURRING CHANNELS

100 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC
Wood Frame Walls and Ceilings/Single Layer Construction

DESCRIPTION FLOATING ANGLE 5/8" gypsum board or 1/2" spacing limitations as

METHOD High Strength Ceiling above. With screws,
Floating angle method of Board on ceilings will nominal 1" x 2" furring may
gypsum board application minimize sagging. During be used. Spacing of the
eliminates the use of the cold weather the use of framing members to
perimeter nails at interior polyethylene film as a receive furring must not
corners and where ceilings ceiling vapor retarder is exceed 24" o.c.
STANDARD APPLICATION and walls meet. This not recommended unless 4. In single ply installation, all
Standard application (single method reduces the stress ceiling insulation is ends and edges of gypsum
nailing) Regular Gold Bond and strain on the board if installed prior to board should occur over
Gypsum Board is usually framing settles. application of gypsum framing members or other
applied directly to wood Reference ASTM C 840, board. solid backing except where
framing members. Ceilings Section 9. LIMITATIONS treated joints occur at right
are applied first, then ADHESIVE NAIL-ON 1. 1/4" Gold Bond Gypsum angles to framing or furring
sidewalls. Boards should be METHOD Board should be applied members.
accurately cut and joints only to existing surfaces 5. Hold the gypsum board
abutted but not forced Apply drywall adhesive to
face of studs or joists in and should not be applied firmly against the framing
together. Horizontal directly to framing while fastening with nails
application, long edges at continuous beads.
Reference ASTM C 840 members, except when or screws. Start at the
right angles to nailing used with other thicknesses center and work toward
members, is preferred for it Section 10.
in double layer systems each end and edge,
minimizes joints and FIRE RESISTANCE RATINGS tested for specific purposes. spacing the fasteners as
strengthens the wall or Where fire ratings are Existing walls and ceilings recommended for each
ceiling. Nails shall be required, refer to pages should be sound, flat, level type of application.
spaced not to exceed 7" on 12, 13, 22, and 23. For and without void spaces.
ceilings, or 8" on sidewalls, 6. Lighting and other fixtures
complete construction 1/4" thick gypsum board shall be supported by
a minimum of 3/8" and a details consult the specific should be applied with a
maximum of 1/2" from framing; do not use gypsum
test report. combination of mechanical board to support them.
edges and ends of gypsum fasteners, nails or screws,
board. Gypsum board nails 7. Gypsum board ceilings to
and adhesive that will bond be decorated with water-
or annular ring nails, such to the substrate surface
as the GWB-54 illustrated thinned spray texture shall
covering. Nails or screws be 1/2" or 5/8" thick and
above, are recommended. should penetrate framing
For a description of the SCREW APPLICATION applied perpendicular to
Screw application is often spaced not over 24" o.c.

09 29 00
various types of Gold Bond the framing. Framing shall
preferred as the screw Adhesive should be applied not exceed 16" o.c. for 1/2"
Gypsum Boards, refer to between framing members
pages 58 through 89. holds the gypsum board regular gypsum board and
tight against the framing to bond the gypsum board 24" o.c. for 1/2" High
DOUBLE NAILING when applied as to the substrate. Strength Ceiling Board and
Double nailing is an alternate recommended. Type W 2. 3/8" Gold Bond Gypsum 5/8" gypsum board.
method of attachment 1 1/4" Drywall Screws are Board should not be used 8. Gypsum board ceilings to
devised to minimize nail- driven with an electric on nailing members over receive a spray texture
pops. This system requires screw gun equipped with 16" o.c. When applied to finish must be primed with
doubling up on the field adjustable screw depth ceilings, the gypsum board a sealing latex primer and
nails. The total quantity of control and a #2 Phillips must be applied with the allowed to dry before
nails used does not double, bit. If framing is spaced up paper bound edges at right spraying. This is to
however, since maximum to 16" o.c., screws are angles to the nailing mem- minimize sagging of the
nail spacing is increased to spaced 12" o.c. max on bers and shall not be used gypsum board and
12" o.c. and conventional ceilings and 16" o.c. max to support insulation. 1/2" discoloration problems.
nailing is used on the on walls. If framing is or 5/8" Gypsum Board
perimeter. Application is spaced 24" o.c., screw should not be used on The use of water-based spray
accomplished by first single spacing must not exceed nailing members over 24" textures may cause un-
nailing the field of the 12" o.c. Minimum screw o.c. When applied to primed gypsum board to
board, starting at the center penetration shall be 5/8" for ceilings with the nailing sag when any one or more
and working toward ends wood studs. members exceeding 16" of the following conditions
and edges. Another nail is o.c., the gypsum board exist:
then driven in close RECOMMENDATIONS must be applied with the 1. Unventilated buildings.
proximity (2" to 2 1/2") to Cut gypsum board to allow for paper bound edges at right
a 1/8" to 1/4" gap between 2. Use of vapor retarders
each of the first nails. The angles to the nailing under certain conditions.
first series of nails are then gypsum board and floor to members.
struck again to ensure the prevent potential wicking. 3. Periods of prolonged high
3. If gypsum board ceiling humidity due to either
board is drawn tightly to 1/2" or 5/8" gypsum board boards are nailed to cross
the nailing member. single layer application is weather conditions or
furring, these members closed building units (poor
recommended for interior shall have a minimum
finishing of all buildings drying conditions).
cross section of 2" x 2"
with wood frame (nominal) with same 4. Inadequate framing support
construction. The use of (can occur where framing
changes direction).
5. Improper type or thickness
of gypsum board.

NATIONAL GYPSUM BOARD PRODUCTS 101

 RECOMMENDATIONS

SINGLE LAYER GYPSUM Type W spaced not to with 7/16" wide crown 5. ADHESIVE APPLICATION
BOARD APPLICATION (also exceed 12" o.c. on ceilings, with legs having divergent TO FRAMING
Base Layer of Double Layer) 16" o.c. on sidewalls where points. Legs shall be not A. Apply gypsum board
1. NAILS studs are 16" o.c. and 12" less than 1" long for 3/8" adhesive to the wood
o.c. on sidewalls where base board, 1 1/8" long for framing with a caulking
Nails shall be GWB-54 or studs are spaced 24" o.c. 1/2" base board or 1 1/4"
cooler type located 3/8" gun.
Screws for attaching long for 5/8" base board.
min. to 1/2" max. from gypsum board to gypsum
edges and ends of board. 4. CORNERBEADS
board shall be Type G
Nails shall be a max. of 7" spaced as required. Cornerbead shall be nailed
o.c. on ceilings and a max. with gypsum board nails
of 8" o.c. on walls, except 3. STAPLES spaced no greater than 9"
for “Double Nailing” Base layer gypsum board may apart on each flange of the
Procedure. be applied with power- bead with the nails
2. SCREWS driven staples spaced 7" opposite. In lieu of nailing,
o.c. on ceilings; 8" o.c. on cornerbead may be crimp
Drywall screws for attaching sidewalls. Staples shall be applied 6" o.c. with a
gypsum board to wood U.S. Standard 16 gauge special tool.
framing shall be 1 1/4", galvanized wire staples

INSTALLATION

FLOATING INTERIOR was improperly driven,

ANGLES remove it. If properly
To minimize fastener popping driven, reseat just below
in areas adjacent to wall the board face. Remove
and ceiling intersections, any loose material over
the floating angle method reseated nail before treat-
should be used for either ing nail heads with joint
single or double layer compound and
application of gypsum redecorating.
board to wood framing. ADHESIVE NAIL-ON
This method is applicable APPLICATION
where single nailing, The adhesive nail-on system
double nailing or screw for application of gypsum
attachment is used. board to wood framing
Gypsum board should be members strengthens the
applied to ceiling first. wall and minimizes the
FLOATING ANGLES SCREW APPLICATION REPAIRING NAIL-POPS possibility of nail-popping.
No nails in shaded area. Fast, positive, fewer Nail-pops are caused by It reduces the number of
heads to treat. lumber shrinkage after nails in the field, provides
board application; loose for intimate contact and a
gypsum board; improperly continuous bond between
aligned, twisted or bowed the gypsum board and
framing; or improper wood framing. All surfaces
nailing. that come in contact with
the adhesive should be dry,
Pops appearing before/during free of dirt, grease, oil or
decoration should be other foreign materials.
repaired immediately.
Those which occur after SCREW APPLICATION
one or more month’s Drywall screws attach gypsum
heating are usually caused board to wood or steel
by lumber shrinkage and framing or to other gypsum
should not be repaired until boards. They pull the board
after heating season. To tightly to the supports,
repair, renail about 1 1/2" minimizing surface defects
from the popped nail along due to loose boards. When
the framing while applying properly driven, they make
sufficient pressure adjacent a uniform depression free
DOUBLE NAILING ADHESIVE/NAIL-ON to the nail to bring board in of ragged edges and fuzz.
Minimizes nail-pop. Ideal for prefinished boards. firm contact with the
framing. If the popped nail

102 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC

TECHNICAL DATA

FASTENER SELECTOR FOR WOOD FRAMING

Nail Type Length Gypsum Board Type Thickness
GWB-54 [Annular Ring 1/4" 1 1/4" (31.8 mm) Regular or Foil-back 3/8" (9.4 mm),
(6.4 mm) head, 098 Dia. shank] 1 3/8" (34.9 mm) gypsum board. 1/2" (12.7 mm)
Gypsum Board Nail (Coated Nail length should Regular, Foil-back or Fire-Shield 1/4" (6.4), 3/8" (9.4 mm)
cooler, flat head, diamond point) be sufficient (type X) gypsum board. 1/2" (12.7 mm),
for 7/8" (22.2 mm) penetration 5/8" (15.9 mm),
into the framing member. 1" (25.4 mm)

Where a certain degree of fire resistance is required for gypsum board assemblies and construction, nails of same
or larger length, shank diameter, and head bearing area as those described in the fire test report must be used.
Screws Type W 1 1/4" (31.8 mm) Regular or Foil-back. 3/8" (9.4 mm), 1/2" (12.7 mm),
5/8" (15.9 mm)
Staples US Std. 16 gauge 1" long (25.4 mm) Only in first 3/8" (9.4 mm)
7/16" (11.1) crown with 1 1/8" (28.6 mm) layer of multi- 1/2" (12.7 mm)
divergent points 1 1/4" (31.8 mm) layer application. 5/8" (15.9 mm)

DETAILS

Maximum Framing Spacing CEILING DETAIL JOIST

OUTSIDE CORNER PLATE
For Single-Layer Gypsum Board
PLATE CORNERBEAD
Gypsum Board Gypsum Board Maximum
Thickness Orientation Framing Spacing
to Framing

09 29 00
Ceilings:
3/8" (9.5 mm)A PerpendicularB 16" (406 mm) o.c.
1/2" (12.7 mm) ParallelB 16" (406 mm) o.c.
1/2" (12.7 mm) PerpendicularB 24" (610 mm) o.c.
5/8" (15.9 mm) Parallel 16" (406 mm) o.c.
5/8" (15.9 mm) Perpendicular 24" (610 mm) o.c.

Walls:
STUD PLATE INSIDE CORNER
3/8" (9.5 mm) Perpendicular 16" (406 mm) o.c.
or Parallel
1/2" (12.7 mm) Perpendicular 24" (610 mm) o.c. SPECIFICATIONS
or Parallel
5/8" (15.9 mm) Perpendicular 24" (610 mm) o.c.
or Parallel See CSI 3-Part format Generic/Proprietary Specifications on page
120.
A
Shall not support thermal insulation
B
On ceilings to receive hand or spray-applied water-based
texture material either 1/2" (12.7 mm) gypsum ceiling
board (ASTM C 1396/C 1396M) shall be applied
perpendicular to framing; other gypsum board products
shall be applied perpendicular to framing and board
thickness shall be increased from 3/8" (9.5 mm) to
1/2" (12.7 mm) for 16" (406 mm) o.c. framing and from
1/2" (12.7 mm) to 5/8" (15.9 mm) for 24" (610 mm) o.c.
framing.

NATIONAL GYPSUM BOARD PRODUCTS 103

 Wood Frame Walls and Ceilings/Double Layer Construction

DESCRIPTION INSTALLATION
The Gold Bond double layer
system consists of a face 4. Adhesive Application, Cut gypsum board to allow for
layer of gypsum board job- Prefinished Gypsum Board a 1/8" to 1/4" gap between
laminated to a base layer of a. Pre-bow board by storing gypsum board and floor to
gypsum board, or gypsum overnight in such a position prevent potential wicking.
sound deadening board that the ends of each board In double layer construction
applied with power driven curve away from the base use any of the following
screws or staples, or nailed layer when put in vertical appropriate laminating
to the framing in the mounting position. adhesives: (1) Sta-Smooth
conventional manner. b. Apply ready-mix or Sta- Compound or Sta-Smooth
Smooth joint compound in Lite for fast hardening;
nominal 5" ribbons of four (2) All-Purpose Joint
DETAILS 1/4" x 1/4" beads located Compound for spreading
around the perimeter and on the back surface of the
OUTSIDE CORNER center of the boards finish layer boards: (3)
CEILING DETAIL JOIST drywall adhesive meeting
(approximate coverage for
PLATE CORNERBEAD PLATE ASTM C 557.
ready-mix is 9-10 gal./1000
sq.ft and Sta-Smooth is 50- Base layer is applied on
60 lbs./1000 sq.ft.). An ceilings, then sidewalls,
alternative is 2" diameter secured with 1 1/4" Type
daubs 1/2" thick, 16" o.c. W Screws 12" o.c. on
(approximate coverage for ceilings, 16" o.c. on walls;
ready-mix is 5 1/2"-6 nails located 7" o.c. on
gal./1000 sq.ft. and Sta- ceilings; 8" o.c. on
Smooth is 30 - 35 lbs./1000 sidewalls; staples 5" o.c. on
sq.ft.). ceilings and 6" o.c. on
c. Temporarily brace, as sidewalls.
required, to ensure proper Finish layer is temporarily
contact and edge alignment nailed or braced until
of boards. adhesive dries. On walls,
5. Mechanical Application of prefinished boards, applied
STUD PLATE INSIDE CORNER Face Layer vertically, can be pre-
bowed, nailed just top and
Mechanical attachment of bottom.
RECOMMENDATIONS face layer for fire or sound
rated constructions shall be RECOMMENDATIONS
made in accordance with 1. Double layer gypsum board
DOUBLE LAYER 3. Adhesive Application, the specifications for the application over wood
GYPSUM BOARD Regular Gypsum Board system selected. framing is recommended
1. Base layer The finish layer shall be For non-rated construction, for the ultimate in wall
The first layer may be positioned on the wall or nails used in wood framing surfacing and in areas
specified the same as single ceiling within 10 minutes to supplement adhesive where increased fire
layer application except (unless otherwise specified shall be type GWB, of a protection and better sound
that fasteners shall be above) and held in place length to provide 7/8" insulation are desired
driven flush with the board with sufficient temporary minimum penetration into between rooms. (For test
surface and joints will not (nails) (Type G Drywall framing and shall be results see pages 13-14 of
be treated. Base layer must Screws) (bracing) to ensure spaced 16" o.c. max. this guide.) Custom built
not be secured to framing adequate contact and Screws used in wood homes, commercial
with clips. alignment of the gypsum framing shall be Type W, of buildings and party walls
boards. When the bond a length to provide between apartments would
2. Adhesive Application of has developed (usually minimum 5/8" penetration be considered appropriate
Face Layer, General 24 hours) the temporary into the framing and shall areas for double layer
a. All joints shall fall at least (fasteners) (bracing) shall be be spaced 24" o.c. max. application.
10" from parallel joints in removed. Resulting holes If no adhesive is used,
the base layer. Adhesive shall be filled flush to the standard fastener spacings
shall be: (select one) surface with Joint shall prevail.
b. ProForm all-purpose ready Compound and the joints
mix joint compound or shall be finished.
Sta-Smooth setting type Cornerbead shall be
compound applied with a applied at all exterior SPECIFICATIONS
notched spreader to the angles.
back side of the finish See CSI 3-Part format
layer. Generic/Proprietary
c. Adhesive is applied with a Specifications on
caulking gun. Align board page 120.
edges. Reference ASTM
C 840, section 9.

104 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC

2. Laminating is an excellent
way to apply Durasan, the FINISH LAYER TAPERED EDGE
CEILING JOISTS
vinyl-surfaced gypsum GYPSUM BOARD
board. This method
eliminates any
visible attachment.
3. Sta-Smooth Compound
or Sta-Smooth Lite is
recommended for
laminating as well as for
joint treatment where fast
hardening is required.
LIMITATIONS
BASE LAYER
1. Joints of succeeding layers GYPSUM BOARD
must not fall at the same
location. For greatest
strength, it is recom-
mended that the boards of LAMINATING
each layer be staggered so ADHESIVE
that joints of each layer are
at least 10" apart.
2. During cold weather,
maintain a room
temperature of not less 2 X 4 WOOD
than 40˚F during FRAMING
mechanical attachment of WOOD
gypsum board, and
between 50˚F and 70˚F
for 48 hours before
lamination, joint treatment, PROFORM JOINT TREATMENT
BASE
texturing and decoration, (ALL JOINTS AND CORNERS)
and continuously thereafter
until completely dry.

09 29 00
SOUND TRANSMISSION CLASS 45 SOUND TRANSMISSION CLASS 58
FIRE RESISTANCE RATING 1 HR. FIRE RESISTANCE RATING 2 HRS.

1/2" FIRE-SHIELD C GYPSUM BOARD 2 LAYERS 5/8" FIRE-SHIELD GYPSUM BOARD

1/4" GYPSUM BOARD

3 1/2" MINERAL WOOL
OR GLASS FIBER
2 X 4, 16" O.C.

4D NAILS 12" O.C.

2 X 4 PLATE

JOINT COMPOUND CAULKING

CAULKING

NATIONAL GYPSUM BOARD PRODUCTS 105

 Resilient Furring Channel Construction

DESCRIPTION RECOMMENDATIONS

Resilient Furring Channels are 3. The point of intersection INSTALLATION (RESILIENT Where channel ends overlap
fabricated of galvanized between the wall and floor FURRING CHANNELS ON between joists, wood
steel with expanded metal shall be caulked prior to ONE SIDE OF PARTITION) blocking may be used to
legs that provide resiliency application of baseboard to Wood framing shall be take Type W Drywall
to reduce sound obtain the best sound erected in accordance with Screws driven through both
transmission through wood isolation. conventional procedure, channels through both
framed wall and ceiling 4. On wood studs fasten studs (16" o.c.) (24" o.c.). A flanges, or Type S Pan
assemblies. channel through alternate 1/2" x 3" shim strip of Head Screws may be used
STANDARD APPLICATION flanges at each stud using gypsum board shall be to fasten channel ends
1 1/4" GWB-54 Nails or nailed to the base plate together.
Resilient Channels have
punched holes spaced 1" Type W Drywall Screws. continuously on the APPLICATION OF GYPSUM
o.c. in the leg flanges to Fasten both flanges at resilient side of the BOARD
facilitate fastening to channel ends. partition. An additional
strip of gypsum board or a Attach gypsum board to
framing members spaced 5. Resilient Furring Channels Resilient Furring Channels
either 16" or 24" o.c. The should be fastened to wood Resilient Furring Channel
should be used at the with 1" Type S Drywall
12' long channels are joists with one Type W Screws 12" o.c. and to
applied perpendicular to Drywall Screw at each joist ceiling line. Resilient
Furring Channels shall be framing through filler strips
the framing members and in alternate flanges. with drywall screws 12"
spaced not more than 24" Channel ends may fall on located horizontally, 24"
o.c. max., and be secured o.c. that penetrate framing
o.c. Gypsum board is then or between joists but must 5/8" minimum.
attached to the Resilient be fastened to prevent any through alternating flanges
sliding movement which at each stud with 1 1/4" Note: Screws used to attach
Channels with power gypsum board to resilient
driven, Type S Drywall could create squeaking GWB-54 Nails or Type W
noises. When channel ends Drywall Screws. Abutting furring channels shall not
Screws spaced contact wood framing.
12" o.c. fall between joists, overlap channel ends shall be
approximately 1 1/2" and located over studs, shall be
RECOMMENDATIONS screw-attach through both gapped and shall be
1. Construction, as shown in the legs into a wood block held fastened through both
detail below, is recommend- above the channels, or flanges.
ed to achieve sound and fire- overlap approximately 6" INSTALLATION (RESILIENT
rating as shown on pages and fasten both channels FURRING CHANNELS ON
11-26. near ends with 3/8" Type S CEILINGS)
2. A 3" wide strip of 1/2" thick Pan Head Screws.
Wood framing shall be
gypsum board should be LIMITATIONS erected in accordance with
used at the floor line to conventional procedure,
assure a solid base for 1. Spacing of Resilient Furring
Channels should not joists (16" o.c.) (24" o.c.)
attaching the gypsum board Resilient Furring Channels
and the base. An additional exceed 24" o.c. nor span
more than 24". shall be installed
strip of gypsum board or a perpendicular to joists,
Resilient Furring Channel 2. Use only 1/2" or 5/8" spaced 24" o.c. and a
should be used at the gypsum board with this maximum of 6" from the
ceiling line. system. ceiling-wall line with Type
W Screws through alternate
flanges at each joist.
Where channel ends overlap
DETAIL at a joist, Type W Drywall
Screws must be driven
through both channels
5/8" FIRE-SHIELD
through both flanges into
GYPSUM BOARD
joist.

2 X 4 STUD
SPECIFICATIONS
3 1/2" MINERAL WOOL OR
GLASS FIBER FOR STC 50
See CSI 3-Part format Generic/Proprietary Specifications on
page 120.
1/2" RESILIENT
FURRING CHANNEL
5/8" FIRE-SHIELD
GYPSUM BOARD

TYPICAL SECTION

106 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC

INSTALLATION

1" DRYWALL SCREWS DRYWALL SCREWS

2 x 4 PLATE

2 x 4 STUDS

3 1/2" MINERAL
WOOL OR
GLASS FIBER

RESILIENT
SPLICE ON JOIST FURRING
1 1/4" Type W Screws CHANNEL
24" O.C.

2 x 4 PLATE
TAPE JOINT
TREATMENT
3" x 1/2" THICK STRIP
GYPSUM BOARD FILLER
6"

09 29 00
SPLICE BETWEEN JOISTS
3/8" Type S Pan Head Screws

NOM. 1 X 4 BLOCK

SPLICE BETWEEN JOISTS, ALT.

1 1/4" Type W Screws

NATIONAL GYPSUM BOARD PRODUCTS 107

 Gypsum Board Over Masonry
DESCRIPTION

A. Z FURRING CHANNEL application, install wood 2. Power driven fasteners 5. Since the use of foam
1. Application of Foam. furring strips (nominal 2" should be used to secure plastic insulation is
Z Furring Channel is used wide x 1/32" greater than furring to monolithic regulated by many building
to secure rigid insulation the foam thickness) concrete. Regular concrete codes, consultation with
and gypsum board to horizontally along the wall- nails can be used for local building authorities is
masonry walls. Insulation ceiling and wall-floor fastening to unit masonry. If recommended before
thickness (1", 1 1/2", 2") angles, where horizontal block is old, test nailing installation.
determines depth of Z gypsum board joints will should be done in advance Since unprotected foam
furring web. The channel is fall, and around door and to determine optimum size insulation may represent a
applied vertically and window openings. For and type of nail. fire hazard, it should be
fastened to the masonry vertical gypsum board 3. During cold weather, room covered promptly and
wall through the short (3/4") application, furring strips temperature between 50˚F completely with gypsum
flange with suitable are required at the and 70˚F must be board.
masonry fasteners 24" o.c. horizontal wall-ceiling and maintained uniformly
maximum. Application is wall-floor lines and around during application and
progressive. After fastening door and window until adhesive is thoroughly
each Z Furring Channel, a openings. dry or premises are
24" wide floor-to-ceiling- Masonry surface must be dry, occupied. Provide
high insulation board is fit clean and free of dust, dirt, adequate ventilation.
between the wall and the form release agents, oil, 4. Gypsum board is not
wide (1 1/4") flange. grease or water soluble recommended in areas
2. Application of Gypsum materials. Treat painted where it will be exposed to
Board. Erect Gold Bond masonry as recommended excessive moisture or
Gypsum Board either for laminating to painted continued high humidity.
vertically or horizontally to surfaces. Apply adhesive to
the Z Furring Channels. the foam insulation in 3/8"
Gypsum board edges or dia. beads continuously
ends that run parallel to the around the perimeter and
channels shall be centered through the field in the long DETAILS
and abutted over channels. direction with the beads
Fasten gypsum board with spaced 16" o.c. Contact
1" Type S Drywall Screws adhesive manufacturer for
spaced 12" o.c. When compatibility with foam. 1 1/4 "
gypsum board erection is Apply the foam boards
complete, finish all joints horizontally to the wall
and screw heads in with a sliding motion and
accordance with ProForm hand press entire board to
Joint Finishing System. ensure full contact of
Prefinished gypsum board adhesive and wall surface.
may be laminated vertically 2. Application of Gypsum
to the channels with screws 1", 11/2", 2"
Board. ProForm All-
at top and bottom. Purpose Joint Compounds
Limitations may be used. (Do not use
Power driven fasteners should water base compounds for
be used to secure furring laminating prefinished
only when wall is boards to foam.)
monolithic concrete. Permanent nails or screws 3
/4
"
Regular concrete nails can 12" o.c. are required to
be used for fastening to unit fasten gypsum board to
masonry. If block is old, wood furring. Gypsum Z FURRING
test nailing should be done board must be installed a
in advance to determine minimum of 1/8" from the
optimum size and type floor. Use temporary nails
of nail. or bracing as necessary to
hold gypsum board boards SPECIFICATIONS
B. LAMINATION in firm contact to the foam
1. Application of Foam. until adhesive has dried or
Insulation may be urethane set. See CSI 3-Part format Generic/Proprietary Specifications on
foam or extruded page 120.
polystyrene. Expanded Limitations
bead polystyrene is not 1. Nails or screws used for
recommended. For attachment of gypsum
horizontal gypsum board board to furring strips must
not penetrate through the
furring.

108 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC

RECOMMENDATIONS

Z FURRING 4. Continue in this manner, LAMINATION 4. Cut gypsum board to allow

1. Begin application of with Z furring 24" o.c. to 1. Masonry or monolithic for 1/8" to 1/4" clearance
Z furring members by end of wall. Locate last Z concrete shall be above between board and floor to
positioning first piece so that web is located a grade, dry, free of dust, prevent potential wicking.
vertically at a corner. distance equal to insulation loose particles, oil, grease 5. Install gypsum board by
Locate the piece on the thickness from adjoining or other foreign material. hand pressing each board
wall adjacent to the wall wall. Cut last insulation tight to the wall making
board to fit remaining 2. Joint compound used as
being insulated first. adhesive shall be mixed to certain that all daubs are in
space. positive contact with the
2. Insulation thickness a consistency thick enough
determines distance of 5. At exterior corner, attach to allow a 2" daub to stick board.
Z furring web from wall the Z through its wide to the underside of a broad 6. Support boards at each
being insulated. At the flange, with narrow flange knife held parallel to the corner to keep them from
appropriate distance, and extending beyond the floor. slipping to the floor by use
with wide flange pointing corner. Begin with a of a concrete nail driven
narrow strip of floor-to- 3. Apply 2" to 2 1/2" diameter
toward applicator, secure daubs of adhesive 1/2" through a small block of
Z furring with appropriate ceiling insulation, wider nominal 1" lumber.
than insulation thickness thick, 16" o.c. in both
fasteners through short directions to the masonry 7. Butt boards to each
flange. (Note to Specifier: but not exceeding 3".
Continue application of wall. The adhesive layout previously positioned
Power driven fasteners are must provide for a row of board to ensure flush joints.
not recommended for use furring and insulation
progressively as described daubs located a maximum 8. If necessary to hold boards
with masonry block.) of 2" from board ends, and
above. straight, plumb and in
3. Install 24" wide floor-to- care must be exercised to proper alignment, drive
ceiling insulation board, 6. At windows, doors and trim center daubs on vertical
areas, use wood nailers masonry nails through
pressed snugly against web joints. No more adhesive small wood blocks and into
of first Z. Install next Z with (nom. 2" wide x insulation shall be applied to the wall
thickness plus 1/32"). Use masonry at high points
wide flange overlapping than will be covered with only. After adhesive is dry
edge of first insulation the nailers also at wall-floor board in 15 minutes.
angles to support trim and (24 - 48 hours) remove
board. Fasten to wall Approximate coverage for temporary nails.
through narrow flange. provide backing for base. joint compound (powder)
7. Apply gypsum board with used as an adhesive is 30- 9. Fill all holes and treat joints
1" Type S Screws through 35 lbs./1000 sq. ft. with tape and joint

09 29 00
flanges of Z furring, 12" o.c. compound.

INSTALLATION

Z FURRING CHANNEL HORIZONTAL INSTALLATION DAUB METHOD USING

WITH DRYWALL ADHESIVE JOINT COMPOUND

NATIONAL GYPSUM BOARD PRODUCTS 109

 Solid Laminated Partitions
DESCRIPTION DETAILS

Laminated Partitions have C. Economical. The laminated

been developed for use partition offers a substantial GYPSUM BOARD CORNERBEAD
where sturdy, nonload- saving in installation time
bearing walls are desired. and subsequently in labor 12d NAIL/12" O.C.
The total thickness is costs over other types of
1" FIRE-SHIELD SHAFTLINER
nominal 2". 1" Fire-Shield solid partitions. The 1"
Shaftliner is used between gypsum core is quickly and
face layers of gypsum easily installed and the
board. large sheets of gypsum
PHYSICAL PROPERTIES board provide a dry finish
surface in minimum time.
A. Fire Resistance. Fire
endurance ratings have LIMITATIONS
been established by the The laminated partition is TAPE AND JOINT
COMPOUND
following tests: adapted to any type of
FM WP 671 - 1 HOUR: building for nonload-
1" FIRE-SHIELD SHAFTLINER
1/2" Regular Gypsum face bearing partitions not
boards and ProForm Brand exceeding 12' in height. GYPSUM BOARD

Sta-Smooth joint Further limitations to height

compound* as laminating are based on the partition CORNER WALL DETAIL
compound. length in the table below. 09250U

UL U505 - 2 HOUR: *Required for fire rating. Scale: 3" = 1'-0"

5/8" Type X Fire-Shield

face boards and ProForm
Brand Sta-Smooth joint
compound* as laminating
compound. 1" FIRE-SHIELD
SHAFTLINER
UL U525 - 2 HOUR:
1/2" Fire-Shield Type C
GYPSUM BOARD
face board and ProForm
Brand Sta-Smooth JOINT
COMPOUND
compound* as laminating ADHESIVE
compound.
UL U529 - 2 HOUR: BASE
1/2" Fire-Shield Type C FLOOR LINE L FLOOR
face boards and ProForm RUNNER
Brand Sta-Smooth joint
compound* as laminating
compound. VERTICAL SECTION USING
METAL FLOOR RUNNER
B. Sound Isolation. An STC 09250T
rating of 34 has been Scale: 3" = 1'-0"
achieved in tests con-
ducted in accordance
with ASTM E 90.

CAULKING
1/4"

1" FIRE-SHIELD SHAFTLINER

TECHNICAL DATA

Maximum Partition Length

Ceiling Height Between Restraints
L RUNNER
12' (3658 mm) 14' (4267 mm)
11' (3353 mm) 20' (6096 mm) CASING BEAD
10' (3048 mm) Over 20' (6096 mm)
ANCHORAGE TO CONCRETE
CEILINGS, WALLS OR COLUMNS
09250V
Scale: 3" = 1'-0"

110 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC

RECOMMENDATIONS

1. Secure floor runner to floor board joints 12" from the

STEEL JAMB STRAP AND ANCHOR
CLIP ASSEMBLY with approved fasteners 24" Shaftliner joints and 24"
o.c. Ceiling runner shall be from joints on each side of
secured in an appropriate the wall.
manner to the ceiling Face boards are then screwed,
construction. The L runner 12" o.c. to the top and
shall be used as both floor bottom runners with 1 7/8"
and ceiling runners in Fire- Type S screws and are
Rated construction. secured to the Shaftliner
2. The 1" Fire-Shield with 1 5/8" Type S Drywall
GYPSUM BOARD
Shaftliner, cut 1/4" shorter Screws spaced 24" o.c.
than wall height, shall be horizontally and vertically
CLIPS NAILED TO SHAFTLINER installed vertically and shall to include screws along
(4d nails bent over)
be fastened to the floor and the vertical edges of each
JAMB DETAIL ceiling runners with two board.
09250X 1 5/8" Type S Drywall Gypsum board joints shall be
Scale: 3" = 1'-0" Screws, each located 2" reinforced with paper tape
from each edge of the and finished with joint
Shaftliner boards. compound.
3. Sta-Smooth Compound 4. Door frames shall be
1" FIRE-SHIELD SHAFTLINER shall be applied evenly vertical, plumb and true,
with a notched spreader and shall be securely
WOOD CASING
(with 1/4" x 1/4" notches, anchored to floor and
1 1/2" o.c.) to the back side ceilings as shown on
GYPSUM BOARD
STOP of the 4' wide, ceiling the plans.
height gypsum board face
boards. Install the boards 5. Completed partition shall
vertically to both sides of be straight and plumb.
the Shaftliner. Stagger

09 29 00
DOOR SPECIFICATIONS
JOINT COMPOUND ADHESIVE
See CSI 3-Part format Generic/Proprietary Specifications on
page 120.
WOOD JAMB DETAIL
09250W
Scale: 3" = 1'-0"

NATIONAL GYPSUM BOARD PRODUCTS 111

 ProForm® BRAND Joint Treatment

DESCRIPTION 3. To laminate gypsum board ProForm BRAND XP Joint than conventional

to an existing surface such Compound - A pre-mixed compounds, Lite pulls and
as old plaster, masonry, or all-purpose joint sands easier and reduces
National Gypsum Company a gypsum board or backer compound formulated for shrinkage by up to 20%.
produces Joint Treatment board base. additional mold resistance. Available in 4.5 gal. pails
Compounds and a Can be used with XP or 3.5 gal. and 4.5 gal.
complete line of ProForm BRAND All Purpose
Joint Compound – A Gypsum Board to construct cartons. West Coast only:
reinforcing tapes for the wall or ceiling systems 3.59 gal. cartons.
proper finishing of gypsum pre-mixed compound that
may be used directly from with enhanced resistance ProForm BRAND Ultra Joint
board joints. To ensure to mold. Available in 61.7
best results, only National the container. It is designed Compound - A lightweight
for tape application, lb. pails and 50 lb. cartons. joint compound designed
Gypsum products should
be used together in fastener spotting, and the ProForm BRAND Multi-Use to be used for finishing
construction systems. complete joint finishing of Joint Compound – A multi- gypsum board, spotting
Mixing with other brands is gypsum board. It contains use ready-mix joint fasteners and finishing
not recommended. sufficient binder to secure compound designed for all cornerbead. ProForm Ultra
the reinforcing tape and phases of drywall finishing: is approximately 50%
All National Gypsum Joint develops its strength and taping, fasteners, finishing, lighter than conventional
Compounds are formulated hardness by drying. There texturing, trims and ready mix and
without asbestos and are two types: regular is for cornerbead. Available in approximately 30% lighter
therefore comply with use with hand tools, and 3.5 gal. or 4.5 gal. cartons than other lightweight
Consumer Product Safety machine grade, a thinner or 4.5 gal. pails. West products. Ultra provides a
Standards. version, used in Coast only: 46 lb. cartons. superior finish with less
JOINT COMPOUNDS mechanical tool ProForm BRAND Lite Joint pocking and excellent
application. It can also be Compound – A lightweight sanding characteristics and
Joint treatment compounds used to repair cracks in
have three basic uses: joint compound designed is the lowest shrinkage
plaster walls and for to be used for finishing ready mix on the market
1. To embed the joint tape skimming and texturing. (10-14%). Available in 4.5
and to finish over the tape, gypsum board joints,
Available in 61.7 lb. pails spotting fasteners, finishing gal. pails or 3.5 gal. and
the cornerbead and nail or or 50 lb. and 61.7 lb. 4.5 gal. cartons.
screw heads. cornerbead and texturing.
cartons. West Coast only: ProForm Lite is designed to
2. To texture gypsum board 47 lb. cartons. Southwest make your job easier.
surfaces. only: 48 lb. cartons. Approximately 30% lighter

112 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC

ProForm BRAND Taping Joint Storage, Ready-Mix LIMITATIONS ProForm BRAND Multi-Flex
Compound - A ready-mix Storage life varies with Sta-Smooth should not be Tape Bead – A
joint compound designed climactic conditions, up to applied over moist combination of joint tape
to enhance bond when 6 months under good surfaces or surfaces and metal strips laminated
embedding joint tape or conditions. Store subject to moisture. to form an outside or
when applying tape-on compound away from Remove all grease, dirt inside corner for gypsum
corner bead and extreme cold or heat to and form oils from the board. It is particularly
accessories. Taping avoid accelerated aging. concrete prior to recommended for inside
compound is also an Regularly check application of the Sta- corners on cathedral
excellent product to production dates and Smooth. Grind all ceilings, kneewalls,
enhance bond when rotate inventory on a first- projections from the stairways, or any outside
laminating gypsum board. in, first-out plan. concrete. Available in or inside corner less or
Available in 46 lb. If Ready-Mix freezes, allow following types: 20, 45, greater than 90˚F. It is
cartons. material to thaw at room 90, 210. (Numbers applied with the metal
ProForm BRAND Topping temperature for a least 24 designate setting or side to the face of the
Joint Compound – hours. When thawed, turn hardening times in gypsum board and is
Designed specially as a the container upside-down minutes.) Available in embedded into the joint
finish used over joint for at least 15 minutes. 25 lb. bags. compound, 100 ft. per
compound. It is not Turn pail right side up, ProForm BRAND Sta-Smooth roll.
recommended for remove lid, and Lite Joint Compound – A ProForm BRAND Fiberglass
embedding paper tape or immediately remix with an lightweight setting Mesh Tape – A 1.9" wide,
the first coat over electric drill. Ready-Mix compound offering the self-adhering fiberglass
cornerbeads. It exhibits should be lump free and advantages of a hardening tape for use with Sta-
easy working and ready to use within 1 compound, but also Smooth compounds. 300'
spreading characteristics minute. Discard all Ready- sandable. Available in per roll. Not
and is suitable for floating Mix that does not remix to set times of 5, 20, 45, 90, recommended for use with
or finishing taped joints, a lump free consistency. 210 minutes in 18 lb. drying type compounds.
spotting nail or screw bags. Varying weather conditions
Stacking can impact both the
heads and the finish coats ProForm BRAND Sta-Smooth
over cornerbead. Its Ready-Mix pails or cartons HS Joint Compound (High quality and appearance of
excellent sanding qualities should not be stacked Strength) – Developed for taped drywall joints.
make it preferred as a more than two pallets in use in the manufactured Relative humidity, plus
finishing compound. height. housing industry. A temperature, will affect the

09 29 00
Topping Compound can ProForm BRAND Sta-Smooth hardening or setting working characteristics of
also be used for texturing. Joint Compound – A compound which all joint compounds.
Available in 61.7 lb. pails special setting (hardening) develops high early For example, cool wet
or 50 lb. and 61.7 lb. type compound that is not strength. Available in set weather will slow down
cartons. West Coast only: affected by humidity once times of 20, 30, 45, 60 the drying process while
49 lb. cartons. it has set and dried. It was and 90 minutes. Available hot, dry weather hastens
developed for use in the in 25 lb. bags. the drying process.
ProForm BRAND Triple-T Sta-Smooth System to
Compound (Taping, Storage, Setting Compound – Exposure to winds,
reduce joint deformities Storage life varies with breezes or drafts can also
Topping, Texturing) – An such as ridging and
all-purpose, powder climactic conditions. With affect the performance of
beading. Sta-Smooth good indoor storage - up joint compounds. Typical
compound used for compound firmly bonds
embedding tape, for to 12 months, high problems from improper
the tape to the board and humidity - 6 months drying can be cracking,
finishing and for texturing. the Sta-Smooth board
Available in 25 lb. bags. maximum. excessive shrinkage,
edges to each other. Sta- ridging and beading,
ProForm BRAND Texture Smooth compound is banding or bond failure.
Grade Joint Compound – JOINT TAPES
suitable for filling voids Proper precautions at the job
An all-purpose ready- left in above-grade interior ProForm BRAND Joint Tape –
Joint tape conceals and site should always be
mixed material specially concrete. Required for taken to minimize the
formulated for texturing finishing joints on exterior reinforces gypsum board
joints. The tape is buffed adverse effects of weather
walls and ceilings. Use to soffit board. on drying. These
create a variety of textures, on both sides to ensure the
Sta-Smooth compounds are best working qualities and precautions will ultimately
the most typical are Spray recommended for use in solve the application time
Spatter, Spatter bond. A center creasing
poor drying conditions. process allows easy and expense from call
Knockdown, Orange Peel Recoating characteristics backs and rework.
and Skip Trowel. Bonds folding for use at corners.
save trips to jobs. Product Available in 75', 250' and
well with many surfaces exhibits low shrinkage
including gypsum board, 500' rolls.
making it excellent for
gypsum plaster and above pre-filling and quick
grade interior patches.
concrete/masonry.
Available in 61.7 lb. pails
or 50 lb. cartons.

NATIONAL GYPSUM BOARD PRODUCTS 113

 TECHNICAL DATA SPECIFICATIONS
THE FOLLOWING PARAGRAPHS ARE FOR INSERTION INTO SECTIONS OF
COVERAGE TABLE GENERIC SPECIFICATIONS OR GENERIC/PROPRIETARY SPECIFICATIONS
Product Container Approx. Coverage* COVERING GYPSUM BOARD ACCESSORIES. THE NATIONAL GYPSUM
PRODUCT NAME FOLLOWS THE GENERIC DESCRIPTION IN PARENTHESES.
ProForm
All-Purpose 47 lbs. (21.3 kg) carton PART 2 PRODUCTS
48 lbs. (21.8 kg) carton 2.01 ACCESSORIES
50 lbs. (22.7 kg) carton
61.7 lbs. (28 kg) pail, carton 130-140 lbs./1000 A. Joint Treatment:
sq. ft. (59-63 kg/ 1. Tape: 2 1/16" wide paper reinforcing tape (ProForm BRAND
93 sq. m.) Joint Tape).
ProForm XP 61.7 lb. (28 kg) pail 2. Tape: 2" wide paper reinforcing tape with metal strips
50 lb. (22.7 kg) carton laminated along the center crease to form inside and
outside corners (ProForm BRAND Multi-Flex Tape Bead).
ProForm Taping 46 lb. (20.8 kg) carton 3. Tape: 1.9" wide self-adhering fiberglass tape (ProForm
BRAND Fiberglass Mesh Tape).

65-70 lbs./1000 sq. ft. 4. Compound: Drying type pre-mixed compound (ProForm
(33kg/93 sq. m.) BRAND All Purpose Joint Compound, regular grade and
machine grade, ProForm BRAND Topping Joint Compound,
ProForm Topping 49 lbs. (22.2 kg) carton ProForm BRAND Lite Joint Compound, ProForm BRAND Ultra
50 lbs. (22.7 kg) carton Joint Compound and ProForm BRAND XP Joint Compound,
61.7 lbs. (28 kg) pail, carton and ProForm BRAND Taping Joint Compound).
5. Compound: Drying type job mixed compound (ProForm
ProForm Multi-Use 4.5 gal. (17 L) pail, carton BRAND Triple-T Compound).
3.5 gal. (13 L) carton
6. Compound: Setting type job mixed chemical-hardening
compound (ProForm BRAND Sta-Smooth Joint Compound,
ProForm Lite 4.5 gal. (17 L) pail, carton ProForm BRAND Sta-Smooth Lite Joint Compound and
3.5 gal. (13 L) carton 8.2 gal./1000 sq. ft. ProForm BRAND Sta-Smooth HS Joint Compound (High
(33 L/93 sq. m.) Strength).
ProForm Ultra 4.5 gal. (17 L) pail, carton PART 3 EXECUTION
3.5 gal. (13 L) carton
3.01 INSTALLATION
Dry Powder 55-65 lbs./1000
A. General: In accordance with the manufacturer’s
Triple-T Compound 25 lbs. (11 kg) bag sq. ft. (25-29 kg/ recommendations, National Gypsum Company “Gypsum
93 sq. m.) Construction Guide.”
Dry Powder B. Specific: For specific application recommendations using Joint
Setting Types 25 lbs. (11 kg) bag 45-55 lbs./1000 Treatment products refer to submittal sheets. Refer to:
Sta-Smooth sq. ft. (20-25 kg/ ProForm BRAND All Purpose Joint Compound 110778
Sta-Smooth HS 93 sq. m.) ProForm BRAND XP Joint Compound 110965
Sta-Smooth Lite 18 lbs. (8 kg) bag ProForm BRAND Multi-Use Joint Compound 110685
ProForm BRAND Lite Joint Compound 110779
*Material usage increases with above-average use of cornerbeads. ProForm BRAND Topping Joint Compound 110777
ProForm BRAND Sta-Smooth Joint Compound 110626
ProForm BRAND Sta-Smooth Lite Joint Compound 110627
ProForm BRAND Sta-Smooth HS Joint Compound 110628
You may obtain copies of these sheets and all product
submittal sheets directly by calling 1-800-NATIONAL
(1-800-628-4662).

Joint Compound Drying Time Guide Per GA-236

Approximate Drying Times: All Purpose/Lite Ready-Mix Joint Compound
Temperature
R.H. 32˚ 40˚ 50˚ 60˚ 70˚ 80˚ 100˚
0% 38/H 28/H 19/H 13/H 9/H 6/H 3/H
20% 2/D 34/H 23/H 16/H 11/H 8/H 4/H
40% 2.5/D 44/H 29/H 20/H 14/H 10/H 5/H
50% 3/D 2/D 36/H 24/H 17/H 12/H 6/H
60% 3.5/D 2.5/D 42/H 29/H 20/H 13.5/H 8/H
70% 4.5/D 3.5/D 2.25/D 38/H 26/H 19.5/H 10/H
80% 7/D 4.5/D 3.25/D 2.25/D 38/H 27/H 14/H
90% 13/D 9/D 6/D 4.5/D 3/D 49/H 26/H
98% 53/D 37/D 26/D 18/D 12/D 9/D 5/D
Note: R.H. = Relative Humidity D = Days (24 hour period) H = Hours
The chart above is a helpful guide in determining approximate drying times for joint compounds under a variety of
humidity/temperature conditions. Shaded area is below the minimum application temperature requirement of 50˚ F
and is not recommended for the application of joint compound.

114 NATIONAL GYPSUM BOARD PRODUCTS

ProForm® BRAND Texture Products 09 29 00/NGC

DESCRIPTION
ProForm BRAND
Perfect Spray
A decorative texture product
for fast spray application
to interior ceiling surfaces.
Its shredded polystyrene
aggregate gives this texturing
product greater whiteness,
better hide and bold accent.
Recommended for interior
ceilings that are formed of
new or previously painted
gypsum board or monolithic PROFORM BRAND PROFORM BRAND
concrete or plaster. PERFECT SPRAY PERFECT SPRAY
Available coarse, medium, TEXTURE–FINE EM - ORANGE PEEL
and fine (40 lb. bag).
ProForm BRAND
Perfect Spray EM
Perfect Spray EM is a non-
aggregated texture product
used to create a wide range
of wall surfaces.When used
in conjunction with textured
ceilings Perfect Spray EM
can be applied without
overspray affecting the
ceiling previously sprayed
with (aggregated) Perfect
Spray. By adjusting mixture
consistency and/or varying PROFORM BRAND PROFORM BRAND
the atomizing pressure, PERFECT SPRAY PERFECT SPRAY
Perfect Spray EM creates an TEXTURE–MEDIUM EM - SPATTER
almost endless variety of
textures, the most typical of

09 29 00
which are Spray Spatter,
Spatter Knockdown and
Orange Peel. Surfaces
can be finished with a coat
of paint. Perfect Spray EM
(nonaggregated) is specially
formulated for easy mixing
and easy pumping and is
available in 50 lb. bags.
Perfect Spray EM
Texture Application
Texturing can be, depending PROFORM BRAND PROFORM BRAND
on desired pattern, a single- PERFECT SPRAY PERFECT SPRAY
or multiple-coat operation TEXTURE–COARSE EM - SPATTER +
using a spray texture gun fed KNOCKDOWN
by a piston or Moyno-type
pump. An Orange Peel
Finish is achieved with a
high atomizing pressure and
thin mix. A Spatter Finish
uses a low atomizing
pressure and heavy mix.
Other finishes can be
created by combining
methods in two coat
operations or troweling
spatter patterns before fully
dried (Spatter Knockdown).
Caution: Where a vapor
retarder has been installed
above a gypsum board
ceiling, adequate ventilation
must be provided during the
drying period. This
precaution is necessary in
order to minimize the
possibility of gypsum board
sagging due to moisture
absorption.

NATIONAL GYPSUM BOARD PRODUCTS 115

 NOTE: Surfaces must be textures. Mask appropriate CONCRETE:
primed with a sealing areas before spraying and Allow concrete to cure for at
primer. promptly remove overspray least 28 days. Clip
APPLICATION GYPSUM from unprotected surfaces protruding wire ends and
BOARD afterward. Follow the spot with rust-inhibitive
instructions of the spray primer. Remove all form oil,
Surfaces, including joint-treated equipment manufacturer for
areas, must be smooth, grease and dirt, or any loose
adjusting controls and or water-soluble material.
clean and dry. First apply a cleaning. If a second coat is
coat of sealing primer. Grind down any form
desired, allow the first coat ridges, and level any
Allow primer to dry to dry thoroughly.
thoroughly, and maintain remaining unevenness with
adequate drying conditions NOTE: Gypsum board ceiling Sta-Smooth Joint
after application. Primer is to surfaces to be decorated Compound. Apply a coat of
minimize sagging of gypsum with water-thinned spray alkali-resistant, sealing
board and discoloration or texture shall be 1/2" or 5/8" primer over the entire
difference in sheen on thick and applied surface to be textured.
ceiling surface. Add dry perpendicular to the AVAILABILITY: Contact your
texture to water. Use a framing. Framing shall not area National Gypsum sales
piston pump or Moyno-type exceed 16" o.c. for 1/2" representative for texture
pump with a texture gun. Regular Gypsum Board and product availability.
Minimum 3/4" I.D. material 24" o.c. for 1/2" High
hose. A hopper-type gun Strength Ceiling Board and
with adequate air supply is 5/8" gypsum board.
also suitable. Typical
coverage is 8-10 sq. ft. per
lb. for aggregated and 10-30
lb. for nonaggregated

116 NATIONAL GYPSUM BOARD PRODUCTS

 RECOMMENDATIONS 09 29 00/NGC

A. For specific recommendations on use and

application of Drywall Texture products,
refer to Gold Bond submittal sheets as
follows:
ProForm BRAND Perfect Spray 110629
ProForm BRAND Perfect Spray EM 110630
You may obtain copies of these sheets
and all product submittal sheets directly
by calling your local representative
or 1-800-NATIONAL
(1-800-628-4662).

TECHNICAL DATA

COVERAGE TABLE: SPRAY TEXTURES

ProForm Brand Mixing water Typical coverage
Texture Application Aggregate Bag size per bag per bag
Perfect Spray ceilings shredded 40 lbs. 3-4 1/2 gal. 300-400 sq. ft.
polystyrene (18 Kg.) (11.4 - 17.0 L) (9.7 - 12.9 sq. m.)

Perfect Spray EM walls none 50 lbs. 4-5 gal. 500-1,500 sq. ft.
ceilings (23 Kg.) (15.1 - 18.9 L) (16.2 - 48.4 sq. m)
NOTE: Perfect Spray, Perfect Spray EM
Burning Characteristics: Flame Spread–10, Smoke Developed–25.

Materials Estimating & Coverage Guide

ESTIMATING TABLE

09 29 00
Perfect Perfect
Ready Mix* Sta-Smooth Spray Spray EM Joint Tape

Quantity per 1,000 sq. ft. of wallboard 140 lbs. 55 lbs. 120 lbs. 50-100 lbs. 350 ft.

ESTIMATING TABLE
Sq. Ft. of Wallboard Size
Wall/Ceiling 4’x8’ 4’x10’ 4’x12’ Ready Mix*/lbs. Joint Tape/ft. Sta-Smooth/lbs. Nails/ct. Screws/ct.
100 4 3 3 14 35 6 168 90
200 7 5 5 28 70 11 294 150
300 10 8 7 42 105 17 420 240
400 13 10 9 56 140 22 546 300
500 16 13 11 70 175 28 672 300
600 19 15 13 84 210 33 798 456
700 22 18 15 98 245 39 924 528
800 25 20 17 112 280 44 1050 600
900 29 23 19 126 315 50 1218 696
1000 32 25 21 140 350 55 1344 768
1100 35 28 23 154 385 61 1470 840
1200 38 30 25 168 420 66 1596 912
1300 41 33 28 182 455 72 1722 984
1400 44 35 30 196 490 77 1848 1056
1500 47 38 32 210 525 83 1974 1128
*Based on ProForm BRAND All Purpose

NATIONAL GYPSUM BOARD PRODUCTS 117

 Levels of Gypsum Board Finish
The following has been difference between gypsum where the assembly would is recommended that the
excerpted from a consensus board surface paper and generally be concealed, prepared surface be coated
document prepared by the the compound used on or in building service with a drywall primer prior
Association of the Wall and finished joints, angles, corridors, and other areas to the application of final
Ceiling Industries- fastener heads, and not normally open to finishes. See painting/
International (AWCI), accessories and over public view. Accessories wallcovering specification
Ceilings & Interior Systems skim coatings. optional at specifier in this regard.
Construction Association Joint Photographing: The discretion in corridors Typically specified in
(CISCA), Gypsum shadowing of the finished and other areas with appearance areas which
Association (GA), and joint areas through the pedestrian traffic. are to receive heavy- or
Painting and Decorating surface decoration. Some degree of sound and medium-texture (spray or
Contractors of America syn telegraphing. smoke control is provided; hand applied) finishes
(PDCA) as a guide to in some geographic areas before final painting, or
gypsum board finishing. Skim Coat: A thin coat of joint
compound,or a material this level is referred to as where heavy-grade
The members of these “fire-taping.” Where a fire- wallcoverings are to be
international trade manufactured especially for
this purpose, applied over resistance rating is required applied as the final
organizations are dedicated for the gypsum board decoration. This level of
to providing the best the entire surface to fill
imperfections in the joint assembly, details of finish is not recommended
possible job for the most construction shall be in where smooth painted
reasonable cost. By work, smooth the paper
texture, and provide a accordance with reports of surfaces or light to medium
incorporating the fire tests of assemblies that wallcoverings are specified.
appropriate sections of this uniform surface for
decorating. Excess have met the fire-rating LEVEL 4
recommended specification requirement. Tape and
into the project documents, compound is immediately All joints and interior angles
sheared off, leaving a film fastener heads need not be
the architect, general covered with joint shall have tape embedded
contractor, and building of skim coating compound in joint compound and two
completely covering the compound.
owner can better anticipate separate coats of joint
the final appearance of the paper. LEVEL 2 compound applied over all
decorated wall and ceiling Spotting: To cover fastener All joints and interior angles flat joints and one separate
system. heads with joint shall have tape embedded coat of joint compound
This has also been issued by compound. in joint compound and applied over interior
the Gypsum Association as Texture: A decorative wiped with a joint knife angles. Fastener heads and
document GA-214. treatment of gypsum board leaving a thin coating of accessories shall be
surfaces. joint compound over all covered with three separate
SCOPE joints and interior angles. coats of joint compound.
Texturing: Regular or irregular
This recommended patterns typically produced Fastener heads and All joint compound shall
specification describes by applying a mixture of accessories shall be be smooth and free of tool
various levels of finish of joint compound and water, covered with a coat of joint marks and ridges. Note: It
gypsum board surfaces or proprietary texture compound. Surface shall is recommended that the
prior to the application materials including latex be free of excess joint prepared surface be coated
of specific types of base texture paint, to a compound. Tool marks and with a drywall primer prior
final decoration. The gypsum board surface ridges are acceptable. Joint to the application of final
recommended level of previously coated with compound applied over the finishes. See painting/
finish of gypsum board wall primer/sealer. body of the tape at the time wallcovering specification
and ceiling surfaces varies of tape embedment shall be in this regard.
with the final decoration to LEVELS OF FINISH considered a separate coat This level should be specified
be applied and can also be The following levels of finish of joint compound and where flat paints, light
dependent on their location are established as a guide shall satisfy the conditions textures, or wallcoverings
in a structure and the type for specific final of this level. are to be applied.
of illumination striking decoration. The minimum Specified where water-
the surface. Each requirements for each level In critical lighting areas, flat
resistant gypsum backing paints applied over light
recommended level of shall be as described board (ASTM C 1396) is
finish is described with herein. textures tend to reduce
used as a substrate for tile; joint photographing.
typical applications. LEVEL 0 may be specified in Gloss, semi-gloss, and
TERMINOLOGY No taping, finishing, or garages, warehouse storage enamel paints are not
The following definitions accessories required. or other similar areas where recommended over this
are applicable to this surface appearance is not level of finish.
This level of finish may be of primary concern.
document. useful in temporary The weight, texture, and
Accessories: Metal or plastic construction or whenever LEVEL 3 sheen level of wall-
beads, trim, or moulding the final decoration has not All joints and interior angles coverings applied over this
used to protect or conceal been determined. shall have tape embedded level of finish should be
corners, edges, or in joint compound and one carefully evaluated. Joints
abutments of the gypsum LEVEL 1 and fasteners must be
additional coat of joint
board construction. All joints and interior angles compound applied over all adequately concealed if the
Critical Lighting: Strong shall have tape set in joint joints and interior angles. wallcovering material is
sidelighting from windows compound. Surface shall Fastener heads and lightweight, contains
or surface-mounted light be free of excess joint accessories shall be limited pattern, has a gloss
fixtures. syn severe lighting. compound. Tool marks and covered with two separate finish, or any combination
ridges are acceptable. coats of joint compound. of these finishes is present.
Drywall Primer: A paint Unbacked vinyl wall-
material specifically Frequently specified in All joint compound shall
plenum areas above be smooth and free of tool coverings are not
formulated to fill the pores recommended over this
and equalize the suction ceilings, in attics, in areas marks and ridges. Note: It
level of finish.

118 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC

LEVEL 5 possibility of joint photo- Manufacturer An alkali and moisture-

All joints and interior angles graphing and of fasteners Recommendations. resistant primer and a tinted
shall have tape embedded showing through the final The recommendations of enamel undercoat may be
in joint compound and two decoration. individual manufacturers of required under enamel
separate coats of joint COMMENTS gypsum board, joint tapes paints. Consult with the
compound applied over all and compounds, finish paint manufacturer
Critical (Severe) for specific
flat joints and one separate Lighting Areas. accessories, drywall
coat of joint compound primers, wallcoverings, recommendations.
applied over interior Wall and ceiling areas adhesives, texture For wallcoverings: White, self-
angles. Fastener heads and abutting window mullions materials, and paints may sizing, water base,
accessories shall be or skylights, long hallways, vary from what is “universal” (all purpose)
covered with three separate or atriums with large recommended herein and wallcovering primers have
coats of joint compound. A surface areas flooded with as such are not a part of recently been introduced
thin skim coat of joint artificial and/or natural this recommended into the marketplace for use
compound, or a material lighting are a few examples specification. on new gypsum board
manufactured especially for of critical lighting areas. surfaces. These products
Strong sidelighting from DRYWALL PRIMER
this purpose, shall be are claimed to minimize
applied to the entire windows or surface- Applied as a first coat to the damage if wallcoverings
surface. The surface shall mounted light fixtures may entire prepared gypsum are subsequently removed,
be smooth and free of tool reveal even minor surface board surface with brush, bind poor latex paint, allow
marks and ridges. Note: It is imperfections. Light striking roller, or spray, prior to hanging over glossy
recommended that the the surface obliquely, at a decoration. Where final surfaces and existing vinyls,
prepared surface be coated very slight angle, greatly appearance is critical, the hide wall colors, and to be
with a drywall primer prior exaggerates surface application of high quality, water washable.
to the application of finish irregularities. If critical high solids, drywall primer
lighting cannot be avoided, will minimize most TEXTURING
paint. See painting
specification in this regard. the effects can be decorating problems. Texture material is applied by
minimized by skim coating For finish paints: A good brush, roller, spray, or
This level of finish is highly the gypsum board surfaces, trowel, or a combination of
recommended where gloss, quality, white, latex drywall
by decorating the surface primer formulated with these tools, depending on
semi-gloss enamel or with medium to heavy the desired result. Textured
nontextured flat paints are higher binder solids,
textures, or by the use of applied undiluted, is wall surfaces are normally
specified or where severe draperies and blinds which overpainted with the
lighting conditions occur. typically specified for new desired finish; overpainting
soften shadows. In general: gypsum board surfaces of textured ceiling surfaces

09 29 00
This highest quality finish is gloss, semi-gloss, and prior to the application of
the most effective method enamel finishes highlight may not be deemed
texture materials and gloss, necessary where an
to provide a uniform surface defects; textures semi-gloss, and flat latex
surface and minimize the hide minor imperfections. adequate amount of
wall paints. material is applied to
provide sufficient hiding

NATIONAL GYPSUM JOINT TREATMENT PRODUCTS USED TO ACHIEVE THE LEVELS OF FINISH
SETTING TYPES DRYING TYPES
Sta-Smooth Dry Powder Ready-Mix
High All Topping
Strength Lite Regular Triple-T Purpose Compound Lite Multi-Use
Level 1
Tape Embedded • • • • • • •
Level 2
Tape • • • • • • •
Cover • • • • • • • •
Level 3
Tape • • • • • • •
Cover • • • • • • • •
Fill • • • • • •
Primer
Level 4
Tape • • • • • • •
Cover • • • • • • • •
Fill • • • • • •
Finish • • • • • •
Primer
Level 5
Tape • • • • • • •
Cover • • • • • • • •
Fill • • • • • •
Finish • • • • • •
Skim • • • • • •
Primer

NATIONAL GYPSUM BOARD PRODUCTS 119

 A Word About
properties. A drywall primer
may not be required under
certain proprietary texture
Drywall Primer:
materials; consult with the
manufacturer of the texture The guidelines for these levels
materials for specific
recommendations. of finishing were prepared
by AWCI, CISCA, GA and
Tool, Marks and Ridges. A PDCA. The specification
smooth surface may be describes a drywall primer
achieved by lightly sanding or as “a paint material
wiping joint compound with a specifically formulated to
dampened sponge. Care shall fill the pores and equalize
be exercised to ensure that the the suction difference
nap of the gypsum board between gypsum board
facing paper is not raised surface paper and the
during sanding operations. compound used on finished
For additional information on joints, angles, fastener
the finishing of gypsum board
surfaces consult ASTM heads and accessories over
Standard C 840. skim coatings.“

SPECIFICATIONS

SECTION 09 29 00
GYPSUM BOARD
THE FOLLOWING PARAGRAPHS ARE FOR INSERTION INTO SECTIONS OF GENERIC SPECIFICATIONS OR GENERIC/PROPRIETARY SPECIFICATIONS COVERING
GYPSUM BOARD PRODUCTS. THE NATIONAL GYPSUM COMPANY PRODUCT NAME FOLLOWS THE GENERIC DESCRIPTION IN PARENTHESES.

PART 1 GENERAL B. Mold-Resistant Gypsum Board: A gypsum core wall panel

1.02 REFERENCES with additives to enhance the water resistance of the core;
surfaced with moisture/mold/mildew-resistant paper on
A. American Society for Testing and Materials (ASTM): front, back and long edges and complying with ASTM
1. C 840, Specification for Application and Finishing of C 1396 (Gold Bond BRAND XP Gypsum Board).
Gypsum Board. 1. Thickness: 1/2"
2. C 1280, Specification for Application of Gypsum 2. Width: 4'
Sheathing Board. 3. Length: 8, 10' or 12'
3. C 1396, Specification for Gypsum Board 4. Edges: Square or Tapered
5. Mold and Mildew Resistance: Panel score of 10,
4. C 1629, Standard Classification for Abuse-Resistant when tested in accordance with ASTM D 3273
Nondecorated Interior Gypsum Panel Products and
Fiber-Reinforced Cement Panels. C. Fire-Resistant Gypsum Board: A gypsum core wall
board with additives to enhance fire resistance of the
B. Gypsum Association (GA): core and surfaced with paper on front, back, and long
1. GA-214, Recommended Specifications: Levels of edges and complying with ASTM C 1396, Type X.
Gypsum Board Finish. 1. Thickness: 1/2" (Gold Bond BRAND Fire-Shield C
2. GA-216, Application and Finishing of Gypsum Panel Gypsum Board), 5/8" (Gold Bond BRAND Fire-Shield
Products. Gypsum Board), or 5/8" (Gold Bond BRAND Fire-
PART 2 PRODUCTS Shield C Gypsum Board).
2.02 MATERIALS 2. Width: 4'
A. Regular Gypsum Board: A gypsum core wall board 3. Length: 6' through 16'
surfaced with paper on front, back, and long edges and (1/2" Fire-Shield C Gypsum Board,
complying with ASTM C 1396 (Gold Bond BRAND 5/8" Fire-Shield Gypsum Board)
Gypsum Board). Length: 8' through 14'
(5/8" Fire-Shield C Gypsum Board)
1. Thickness: 1/4", 3/8" or 1/2"
4. Edges: Square, Tapered, or Beveled Taper (Sta-
2. Width: 4' Smooth Edge)
3. Length: 6' through 16'
4. Edges: Square, Tapered, or Beveled Taper (Sta-
Smooth Edge)

120 NATIONAL GYPSUM BOARD PRODUCTS

 09 29 00/NGC

D. Fire-Resistant Mold-Resistant Gypsum Board: A G. Gypsum Ceiling Board: A gypsum core ceiling board with
gypsum core wall panel with additives to enhance the additives to enhance the sag resistance of the core and
fire resistance of the core and the water resistance of surfaced with paper on front, back, and long edges; and
the core; surfaced with a moisture/mold/mildew complying with ASTM C 1396 (High Strength BRAND
resistant paper on the front, back and long edges and Ceiling Board).
complying with ASTM C 1396, Type X. 1. Thickness: 1/2"
1. Thickness: 1/2" (Gold Bond BRAND XP Fire-Shield C 2. Width: 4'
Gypsum Board) 5/8" (Gold Bond BRAND XP Fire- 3. Length: 6' through 16'
Shield Gypsum Board) 4. Edges: Square, Tapered, or Beveled Taper (Sta-Smooth
2. Width: 4' Edge)
3. Length: 8', 10' or 12' H. Gypsum Sheathing Board: A gypsum core sheathing
4. Edges: Square or Tapered board with additives to enhance the water resistance of
5. Mold and Mildew Resistance: panel score of 10, the core; surfaced with water repellent paper on front,
when tested in accordance with ASTM D 3273 back, and long edges; and complying with ASTM C 1396.
E. Fire-Resistant Abuse-Resistant Mold-Resistant Gypsum 1. Regular Board, 4' by 8' or 9' or 10': 1/2" thick with
Board: A gypsum core wall panel with additives to square edge (Gold Bond BRAND Jumbo Gypsum
enhance the fire resistance, surface indentation resistance Sheathing).
and impact resistance of the core and surfaced with
abrasion, moisture/mold/mildew- resistant paper on the 2. Fire-Rated Board (Type X): 5/8" thick by 4' wide by 8'
front, back and long edges and complying with ASTM or 9' or 10' long with additives in the core to enhance
C 1396, Type X. fire resistance (Gold Bond BRAND Fire-Shield Jumbo
(Hi-Abuse BRAND XP Fire-Shield Gypsum Board) Gypsum Sheathing).
1. Thickness: 5/8" I. Fire-Resistant Gypsum Shaftliner Board: A gypsum core
2. Width: 4' shaftwall board with additives to enhance fire resistance
3. Length: 8' through 12' of the core and surfaced with water repellent paper on
4. Edges: Tapered front, back, and long edges and complying with ASTM
5. Surface Abrasion Resistance: Not greater than C 1396, Type X (Gold Bond BRAND Fire-Shield Shaftliner).
0.009" depth when tested at 50 cycles in 1. Thickness: 1"
accordance with ASTM D 4977, Modified. 2. Width: 2
6. Indentation Resistance: Not greater than 0.132" depth 3. Length: 7' through 14'
when tested at an impact load of 72 in.-lbs. in 4. Edges: Beveled
accordance with ASTM D 5420. J. Fire and Mold-Resistant Gypsum Shaftliner Board: A

09 29 00
7. Impact/Penetration Resistance: Not less than 210 gypsum core shaftwall board with additives to enhance
ft.-lbs. when tested in accordance with ASTM E 695, fire resistance of the core and surfaced with a
modified. moisture/mold/mildew resistant paper on front, back,
8. Mold and Mildew Resistance: Panel score of 10, when and long edges; and complying with ASTM C 1396,
tested in accordance with ASTM D 3273. Type X (Gold Bond BRAND Fire-Shield Shaftliner XP).
F. Fire-Resistant Impact/Penetration-Resistant Mold-Resistant 1. Thickness:1"
Gypsum Board: A gypsum core wall panel with additives 2. Width: 2'
to enhance the fire resistance, water resistance, surface 3. Length: 7' through 14'
indentation resistance and impact resistance of the core; 4. Edges: Beveled
surfaced with abrasion, moisture/mold/mildew-resistant 5. Mold and Mildew Resistance: Panel score of 10,
paper on the front, back and long edges with a fiberglass when tested in accordance with ASTM D 3273
mesh embedded in the board to enhance
impact/penetration resistance and complying with ASTM K. Exterior Gypsum Soffit Board: A gypsum core soffit board
C 1396, Type X. with additives to enhance the sag resistance of the core;
(Hi-Impact BRAND XP Fire-Shield Gypsum Board) surfaced with water repellent paper on front, back, and
long edges; and complying with ASTM
1. Thickness: 5/8" C 1396 (Gold Bond BRAND Exterior Soffit Board).
2. Width: 4'
3. Length: 8' through 12' 1. Thickness: 1/2"
4. Edges: Tapered 2. Width: 4'
5. Surface Abrasion Resistance: Not greater than 0.009" 3. Length: 8' through 12'
depth when tested at 50 cycles in accordance with 4. Edges: Beveled Taper (Sta-Smooth Edge)
ASTM D 4977, Modified. L. Fire-Resistant Exterior Gypsum Soffit Board: A gypsum
6. Indentation Resistance: Not greater than 0.114" depth core soffit board with additives to enhance the fire
when tested at an impact load of 72 in-lbs. in resistance and the sag resistance of the core; surfaced
accordance with ASTM D 5420. with water repellent paper on front, back, and long edges;
7. Impact/Penetration Resistance: Not less than 720 and complying with ASTM C 1396, Type X (Gold Bond
ft.-lbs. when tested in accordance with ASTM E 695, BRAND Fire-Shield Exterior Soffit Board).
modified. 1. Thickness: 5/8"
8. Mold and Mildew Resistance: Panel score of 10, when 2. Width: 4'
tested in accordance with ASTM D 3273. 3. Length: 8' through 12'
4. Edges: Beveled Taper (Sta-Smooth Edge)

NATIONAL GYPSUM BOARD PRODUCTS 121

 M. Flexible Gypsum Board: A gypsum core wall panel 4. Compound: Drying type pre-mixed compound
with additives to enhance flexibility surfaced with (ProForm BRAND Multi-Use Joint Compound,
paper on front, back and long edges and complying ProForm BRAND All Purpose Joint Compound, regular
with ASTM C 1396 (High Flex BRAND Gypsum grade and machine grade, ProForm BRAND Lite Joint
Board). Compound, ProForm BRAND Ultra Joint Compound,
1. Thickness: 1/4" ProForm BRAND XP Joint Compound and ProForm
BRAND Taping Joint Compound).
2. Width: 4'
3. Length: 8' through 12' 5. Compound: Drying type job mixed vinyl base
4. Edges: Slightly Tapered compound (ProForm BRAND Triple-T Compound).
N. Fire-Resistant Vinyl laminated Gypsum Grid Board: A 6. Compound: Drying type vinyl base topping
gypsum core lay-in ceiling panel with additives to compound, pre-mixed (ProForm BRAND Topping
enhance the sag and fire resistance of the core; Joint Compound).
surfaced with paper on the front and back and finished 7. Compound: Setting type job mixed chemical-
on the front with a 2-mil, white, stipple textured vinyl hardening compound (ProForm BRAND Sta-Smooth
laminate; and complying with ASTM C 1396, Joint Compound, ProForm BRAND Sta-Smooth Lite
Type X, Class 1; E 1264 Type XX, patterns E, G Joint Compound, and ProForm BRAND Sta-Smooth
(Gridstone BRAND Ceiling Panel). HS Joint Compound).
1. Thickness: 1/2" R. Textured Coatings:
2. Width and Length: 2' x 2' and 2' x 4'
3. Edges: Square 1. Ceiling Coating: Compound of minerals and clays
for mixing with a mineral or polystyrene aggregate
O. Fire-Resistant Sealed Vinyl Laminated Gypsum Grid and water (ProForm Brand Perfect Spray Texture.)
Board: A gypsum core lay-in ceiling panel with
additives to enhance the sag and fire resistance of the 2. Wall Coating: Compound of minerals and clays for
core and sealed on face, back and long edges with a mixing with water (ProForm BRAND Perfect Spray EM
2-mil rigid vinyl film, exposed edges are factory sealed Texture).
with a durable coating providing a completely sealed PART 3 EXECUTION
panel; and complying with ASTM C 1396, Type X, 3.01 INSTALLATION
Class 1, E 1264, Type XX, patterns E, G (Gridstone A. General: In accordance with ASTM C 840 and
BRAND CleanRoom Ceiling Panel).
manufacturer’s recommendations, “National Gypsum
1. Thickness: 1/2" Construction Guide.“
2. Width and Length: 2' x 2' and 2' x 4'
3. Edges: Square
P. Vinyl Laminated Gypsum Grid Board: A gypsum core
lay-in ceiling panel with additives to enhance the sag
resistance of the core; surfaced with paper on the front
and back and finished on the front with a 2-mil, white,
stipple textured vinyl laminate; and complying with
ASTM C 1396, Class 1, E 1264, Type XX,
patterns E, G (Gridstone BRAND Hi-Strength Ceiling
Panel).
1. Thickness: 5/16"
2. Width and Length: 2' x 2' and 2' x 4'
3. Edges: Square
Q. Joint Treatment:
1. Tape: 2 1/16" wide paper reinforcing tape (ProForm
BRAND Joint Tape).
2. Tape: 2" wide paper reinforcing tape with metal
strips laminated along the center crease to form
inside and outside corners (ProForm BRAND Multi-
Flex Tape Bead).
3. Tape: 2" wide self-adhering fiberglass tape (ProForm
BRAND Fiberglass MeshTape).

For additional information

Phone 1-800-NATIONAL
(1-800-628-4662)
®

122 NATIONAL GYPSUM BOARD PRODUCTS

12TH EDITION 09 21 16.23/NGC

Cavity Shaftwall
Systems

09 21 16.23

123
CAVITY SHAFTWALL SYSTEMS
DESCRIPTION TECHNICAL DATA

Gypsum drywall shaft and 5/8" Fire-Shield FUNCTION AND UTILITY Sound Transmission. STC
construction has become Gypsum Board face panels. Loading Performance. ratings of 40 to 51 have
the preferred alternative to 1/2" XP Fire-Shield C or 5/8" Although the cavity been achieved in tests
traditional masonry shafts. XP Fire-Shield Gypsum shaftwall systems are non- conducted in accordance
One-inch Shaftliner board Board face panels may be load-bearing, this System with ASTM E 90. Refer
was developed as a utilized for extra protection has been designed and to pages 19 and 20.
lightweight, easy-to-install against mold and mildew. tested to withstand positive
replacement for masonry in The framing includes LIMITATIONS
and negative air pressure 1. Nonload-bearing.
the interior core of I-Studs, C-T Studs and C-H forces exerted by high-
buildings for shaftwalls, studs with integral speed, high-rise elevators. 2. The cavity shaftwall systems
stairwells, other vertical tabs/flange which hold the should not be used where
chases and mechanical panels in place and J Track Fire Resistance. The cavity exposed to constant
enclosures. Shaftliner for runners at top and shaftwall systems have dampness or conditions
board is also used as a bottom, as well as vertically been fire tested and have under which free water can
component of 2" solid at partition ends and to achieved fire resistance be formed.
partitions, and area frame openings. ratings of 1 and 2 hours. All
components are 3. This System should not be
separation walls with a The Cavity Shaftwall Systems exposed to temperatures
layer of 1/2" Regular or noncombustible. Refer
were developed to enclose to pages 19 and 20. over 125˚ F for extended
Fire-Shield Gypsum Board elevator shafts and other periods of time.
attached to each side. vertical chases in buildings 25 GA (.020" minimum steel
where it is advantageous to thickness) J Track exceeded 4. Where reference is made to
Historically, heavy masonry nominal gauges, 25 gauge
weighing 20 to 45 lbs. per erect these walls from one 2,000,000 lateral load
side only and where fire oscillation cycles in a test relates to minimum base
square foot was used for steel of .020" and 20 gauge
shaftwall construction. resistance and resistance to conducted to duplicate the
air pressures are required. positive and negative to .0329".
With the use of Shaftliner,
shaftwall assemblies weigh pressures created as
National Gypsum Company elevator cabs rise and
in at a remarkably low 10 Cavity Shaftwall Systems
to 13 lbs. per square foot. descend in a shaft.
may be constructed with
The benefits of gypsum C-T, C-H or I-Stud shaftwall I-STUD SECTION PROPERTIES ABOUT X-X AXIS
drywall shaft systems go far framing.
beyond the difference in A= Section Area, in.2
Lightweight. Cavity Shaftwall Y= Distance from neutral axis to extreme steel fiber, in.
weight alone. The core Systems are very lightweight
wall of a shaft can be I = Moment of Inertia, in.4
compared to conventional S= Section Modulus, in.3
installed from the exterior shaftwalls, weighing
of the shaft and requires approximately 10 lbs. per Section properties based on steel without galvanizing.
no scaffolding. Erection sq. ft. of wall when finished
is speedy and clean. with two layers Min.
Shaftliner also provides of 1/2" Fire-Shield C Stud Size Base Steel A Y I S
excellent sound control Gypsum Board.
and can achieve the fire 2 1/2" (63.5 mm) 0.020" 0.133 1.366 0.151 0.110
ratings necessary for today’s Economical. Shafts can be 2 1/2" (63.5 mm) 0.0329" 0.253 1.262 0.288 0.228
building construction. Best quickly enclosed with 4" (102 mm) 0.020" 0.163 2.152 0.421 0.196
of all, gypsum shaftwall shaftwall framing and 4" (102 mm) 0.0329" 0.307 2.016 0.822 0.408
systems are more Shaftliner under most 6" (152 mm) 0.0329" 0.342 3.020 1.860 0.616
economical than masonry conditions in which
installers can work, well Above properties are in accordance with AISI “Specifications For the Design of
shaft construction. Cold-Formed Steel Structural Members.”
below temperature
National Gypsum produces limitations for finish gypsum
Shaftliner board with green board applications. 1/2" FIRE-
moisture-resistant paper or CAVITY SHAFTWALL SYSTEM SHIELD C
purple moisture/mold/ Practical. The 1" Shaftliner U497-2 Hour
is faced with light green GYPSUM
mildew resistant paper on (fire-tested both sides) BOARD
both sides with a beveled moisture-resistant paper and
edge configuration allowing Shaftliner XP is faced with
for simple installation into purple moisture/mold/
the Shaftwall System mildew resistant paper for
framing. protection against weather
during installation.
Cavity Shaftwall systems are a J TRACK
nonload-bearing drywall
partition made up of two I-Stud Code Report
basic components, gypsum References: I-STUD, C-T or C-H
board and metal framing. ICC ES, Inc. Legacy
Gypsum board includes 1" Report 89-35.01
Fire-Shield Shaftliner or 1" ICC ES, Inc. Legacy
Fire-Shield Shaftliner XP 1" FIRE-SHIELD
Report 9525B SHAFTLINER
panels, 1/2" Fire-Shield C
ICBO ES, ER-3579

Note: In addition to National Gypsum systems, 1/2" Fire-Shield C,

5/8" Fire-Shield and 1" Fire-Shield Shaftliner panels are
listed in Dietrich Industries ICC ES Legacy Report J TRACK CAULK WHERE
NER-506, Shaftwall and Stairwell Fire-Resistive (C-T stud) REQUIRED
Assemblies.
124 CAVITY SHAFTWALL SYSTEMS
 09 21 16.23 /NGC
VIEW A-A

1" FIRE-SHIELD
SHAFTLINER
U498 2 HOUR
STAIRWELL
CONSTRUCTION

U499 1 HOUR
SHAFTWALL

J TRACK .020", .0329"

(3" LEG .0329" ONLY) I-STUD .020", .0329"

ALLOWABLE WALL HEIGHTS FOR 1-HOUR FIRE-RATED I-STUD ASSEMBLIES

Stud Stud Min. Steel Sustained Air Pressure Load PSF
Size Spacing Thickness Allowable
in. (mm) in. O.C. (mm) in. Deflection 5 7.5 10 15
2 1/2" 24" 0.020 L/120 13'- 4" (4060 mm) 11'- 7" (3531 mm) 10'- 1" (3073 mm) 8'- 3" (2515 mm)
(63.5 mm) (610 mm) L/240 10'- 7" (3226 mm) 9'- 3" (2819 mm) 8'- 5" (2565 mm) 7'- 4" (2235 mm)
L/360 9'- 3" (2819 mm) 8'- 1" (2464 mm) 7'- 4" (2235 mm) 6'- 5" (1956 mm)
2 1/2" 24" 0.0329 L/120 15'- 2" (4623 mm) 13'- 3" (4039 mm) 12'- 1" (3683 mm) 10'- 7" (3226 mm)
(63.5 mm) (610 mm) L/240 12'- 1" (3683 mm) 10'- 7" (3226 mm) 9'- 7" (2921 mm) 8'- 4" (2540 mm)
L/360 10'- 7" (3226 mm) 9' - 2" (2794 mm) 8'- 4" (2540 mm) 7'- 4" (2235 mm)
4" 24" 0.020 L/120 17'- 11" (5461 mm) 14'- 10" (4521 mm) 12'- 10" (3912 mm) 9'- 9" (2972 mm)
(102 mm) (610 mm) L/240 14'- 3" (4343 mm) 12'- 5" (3785 mm) 11'- 4" (3454 mm) 9'- 5" (2870 mm)
L/360 12'- 5" (3785 mm) 10'- 10" (3302 mm) 9'- 5" (2870 mm) 8'- 3" (2515 mm)
4" 24" 0.0329 L/120 20'- 0" (6096 mm) 18'- 2" (5537 mm) 16'- 6" (5029 mm) 14'- 3" (4343 mm)
(102 mm) (610 mm) L/240 16'- 6" (5029 mm) 14'- 5" (4394 mm) 13'- 1" (3988 mm) 11'- 5" (3480 mm)
L/360 14'- 5" (4394 mm) 12'- 7" (3835 mm) 11'- 5" (3480 mm) 9'- 4" (2845 mm)
6" 24" 0.0329 L/120 24'- 0" (7315 mm) 22'- 10" (6960 mm) 19'- 9" (6020 mm) 16'- 2" (4928 mm)
(152 mm) (610 mm) L/240 20'- 11" (6375 mm) 18'- 4" (5588 mm) 16'- 8" (5080 mm) 14'- 6" (4420 mm)
L/360 18 - 4" (5588 mm) 16'- 0" (4877 mm) 14'- 6" (4420 mm) 10'- 11" (3327 mm)
›Yield strength 40,000 psi
Limiting heights are based on transverse load tests (in accordance with ASTM E 72)

09 21 16.23
and calculated utilizing the loads indicated.

ALLOWABLE WALL HEIGHTS FOR 2-HOUR FIRE-RATED I-STUD ASSEMBLIES UNLINED RETURN AIR SHAFTS
Stud Stud Min. Steel Sustained Air Pressure Load PSF
Size Spacing Thickness Allowable
in. (mm) in. O.C. (mm) in. Deflection 5 7.5 10 15
2 1/2" 24" 0.020 L/120 14'- 7" (4445 mm) 12'- 4" (3759 mm) 10'- 9" (3277 mm) 8'- 9" (2667 mm)
(63.5 mm) (610 mm) L/240 11'- 7" (3531 mm) 10'- 1" (3073 mm) 9'- 2" (2794 mm) 8'- 0" (2438 mm)
L/360 10'- 1" (3073 mm) 8'- 10" (2692 mm) 8'- 0" (2438 mm) 7'- 0" (2134 mm)
2 1/2" 24" 0.0329 L/120 17'- 9" (5410 mm) 15'- 6" (4724 mm) 14'- 1" (4293 mm) 12'- 4" (3759 mm)
(63.5 mm) (610 mm) L/240 14'- 1" (4293 mm) 12'- 4" (3759 mm) 11'- 2" (3404 mm) 8'- 9" (3404 mm)
L/360 12'- 4" (3759 mm) 9'- 8" (2946 mm) 8'- 9" (2667 mm) 7'- 8" (2337 mm)
4" 24" 0.020 L/120 19'- 10" (6045 mm) 16'- 3" (4953 mm) 14'- 0" (4267 mm) 10'- 2" (3099 mm)
(102 mm) (610 mm) L/240 16'- 2" (4928 mm) 14'- 2" (4318 mm) 11'- 6" (3505 mm) 10'- 0" (3048 mm)
L/360 14'- 2" (4318 mm) 11'- 0" (3353 mm) 10'- 0" (3048 mm) 8'-9" (2667 mm)
4" 24" 0.0329 L/120 23'- 2" (7061 mm) 20'- 2" (6147 mm) 18'- 1" (5512 mm) 14'- 9" (4496 mm)
(102 mm) (610 mm) L/240 18'- 4" (5588 mm) 16'- 1" (4902 mm) 14'- 7" (4445 mm) 11'- 1" (3378 mm)
L/360 16'- 1" (4902 mm) 14'- 0" (4267 mm) 11'- 1" (3378 mm) 9'- 8" (2946 mm)
6" 24" 0.0329 L/120 28'- 0" (8534 mm) 23'- 11" (7290 mm) 20'- 9" (6325 mm) 16'- 11" (5156 mm)
(152 mm) (610 mm) L/240 22'- 9" (6934 mm) 19'- 10" (6045 mm) 18'- 0" (5486 mm) 12'-10" (3912 mm)
L/360 19'- 10" (6045 mm) 17'- 4" (5283 mm) 12'- 10" (3912 mm) 11'- 2" (3404 mm)
›Yield strength 40,000 psi
Limiting heights are based on transverse load tests (in accordance with ASTM E 72)
and calculated utilizing the loads indicated.

CAVITY SHAFTWALL SYSTEMS 125

ALLOWABLE WALL HEIGHTS FOR 2-HOUR FIRE-RATED I-STUD ASSEMBLIES STAIRWELLS
Stud Stud Min. Steel Sustained Air Pressure Load PSF
Size Spacing Thickness Allowable
in. (mm) in. O.C. (mm) in. Deflection 5 7.5 10 15
2 1/2" 24" 0.020 L/120 13'- 11" (4242 mm) 12'- 2" (3708 mm) 11'- 0" (3353 mm) 9'- 8" (2946 mm)
(63.5 mm) (610 mm) L/240 11'- 0" (3353 mm) 9'- 8" (2946 mm) 8'- 9" (3404 mm) 7'- 8" (2337 mm)
L/360 8'- 9" (2946 mm) 8'- 5" (2565 mm) 7'- 8" (2337 mm) 6'- 8" (2032 mm)
2 1/2" 24" 0.0329 L/120 16'- 7" (5055 mm) 14'- 6"f (4420 mm) 13'- 2"f (4013 mm) 11'- 6" (3505 mm)
(63.5 mm) (610 mm) L/240 13'- 2" (4013 mm) 11'- 6" (3505 mm) 9'- 10" (2897 mm) 8'- 7" (2616 mm)
L/360 11'- 6" (3505 mm) 10'- 0" (3048 mm) 8'- 7" (2616 mm) 7'- 6" (2286 mm)
4" 24" 0.020 L/120 20'- 2" (6147 mm) 17'- 8" (5385 mm) 16'- 0" (4877 mm) 11'- 11" (3632 mm)
(102 mm) (610 mm) L/240 16'- 0" (4877 mm) 11'- 11" (3632 mm) 10'- 10" (3302 mm) 9'- 5" (2870 mm)
L/360 11'- 11" (3632 mm) 10'- 6" (3175 mm) 9'- 5" (2870 mm) 8'- 3" (2515 mm)
4" 24" 0.0329 L/120 22'- 3" (6782 mm) 19'- 6" (5944 mm) 17'- 8" (5385 mm) 15'- 6" (4724 mm)
(102 mm) (610 mm) L/240 17'- 8" (5385 mm) 15'- 6" (4724 mm) 14'- 1" (4293 mm) 10'- 8" (3251 mm)
L/360 15'- 6" (4724 mm) 11'- 9" (3581 mm) 10'- 8" (3251 mm) 9'- 4" (2845 mm)
6" 24" 0.0329 L/120 28'- 0" (8534 mm) 24'- 10" (7569 mm) 22'- 7" (6883 mm) 19'- 9" (6020 mm)
(152 mm) (610 mm) L/240 22'- 7" (6883 mm) 19'- 9" (6020 mm) 17'- 11" (5461 mm) 12'- 3" (3734 mm)
L/360 19'- 9" (6020 mm) 13'- 6" (4115 mm) 12'- 3" (3734 mm) 10'- 9" (3277 mm)
›Yield strength 40,000 psi
Limiting heights are based on transverse load tests (in accordance with ASTM E 72)
and calculated utilizing the loads indicated.

ALLOWABLE WALL HEIGHTS FOR 2-HOUR FIRE-RATED I-STUD ASSEMBLIES

Stud Stud Min. Intermittent Air Pressure Load PSF
Size Spacing Steel Allowable
in. (mm) in. O.C. (mm) Thickness-in. Deflection 5 7.5 10 15
2 1/2 24 0.020 L/120 15'- 3"f (4648 mm) 12'- 6"f (3810 mm) 10'- 9"f (3276 mm) 8'-10"f (2692 mm)
(63.5 mm) (610 mm) L/240 12'- 6" (3810 mm) 11'- 0" (3352 mm) 10'- 0" (3048 mm) 8'- 9" (2667 mm)
L/360 11'- 0" (3352 mm) 9'- 6" (2895 mm) 8'- 8" (2641 mm) 7'- 7" (2311 mm)
2 1/2 24 0.0329 L/120 17'-10" (5435 mm) 15'- 8" (4775 mm) 14'- 2"f (4318 mm) *12'- 5" (3784 mm)
(63.5 mm) (610 mm) L/240 14'- 2" (4318 mm) 12'- 5" (3784 mm) 11'- 4" (3454 mm) 9'-10" (2997 mm)
L/360 12'- 5" (3784 mm) 10'-11" (3327 mm) 9'-10" (2997 mm) 8'- 7" (2616 mm)
4 24 0.020 L/120 20'- 4" (6197 mm) 16'- 8"f (5080 mm) *14'- 5"f (4394 mm) *11'-10"f (3606 mm)
(102 mm) (610 mm) L/240 16'- 1" (4902 mm) 14'- 1" (4292 mm) 12'-10" (3911 mm) *11'- 2" (3403 mm)
L/360 14'- 1" (4292 mm) 12'- 4" (3759 mm) 11'- 2" (3403 mm) * 9'-10" (2997 mm)
4 24 0.0329 L/120 21'-10" (4114 mm) *19'- 1" (5816 mm) *17'- 4" (5283 mm) *15'- 1" (4597 mm)
(102 mm) (610 mm) L/240 17'- 4" (5283 mm) 15'- 1" (4597 mm) 13'-10" (4216 mm) *12'- 0" (3657 mm)
L/360 15'- 1" (4597 mm) 13'- 2" (4013 mm) 12'- 0" (3657 mm) *10'- 6" (3200 mm)
6 24 0.0329 L/120 25'- 4" (7721 mm) *22'- 1" (6731 mm) *20'- 1" (6121 mm) *17'- 6" (5334 mm)
(152 mm) (610 mm) L/240 20'- 1" (6121 mm) *17'- 6" (5334 mm) *15'-11" (4851 mm) *13'-11" (4241 mm)
L/360 17'- 6" (5334 mm) 15'- 4" (4673 mm) 13'-11" (4241 mm) *12'- 2" (3708 mm)
f Limited by bending stress › Yield strength 40,000 psi
v Limited by end reaction relating to stud or track › Unless noted, heights are limited by deflection.
* 20 gauge track required › For heights limited by bending stress, allowable bending stresses have been increased by
33.33% for intermittent loading.
› Heights limited by deflection are based on transverse load tests (in accordance with ASTM E 72)
and calculated utilizing the loads indicated.

126 CAVITY SHAFTWALL SYSTEMS

 09 21 16.23/NGC

SHAFTWALL STUD J TRACK

Used with J Track for framing 2 1/4" Leg.
Cavity Shaftwalls. Tabs Used with I-Stud for framing
retain 1" shaftliner. Cavity Shaftwalls.
Galvanized steel. Galvanized steel.

DETAILS

PAN HEAD SCREWS 1/2" FIRE-SHIELD C 1" TYPE S OR S-12 SHAFTWALL STUD
(TRACK TO TRACK) GYPSUM BOARD SCREWS, 24" O.C.

CORNERBEAD

1/2" FIRE-SHIELD C
GYPSUM BOARD

09 21 16.23
J TRACK

1 5/8" TYPE S
SCREWS,
12" O.C. 12" MAX.
CORRIDOR SIDE
1" FIRE-SHIELD
CORRIDOR SIDE

J TRACK
SHAFT SIDE

SHAFTLINER

1 5/8" TYPE S OR S-12

SCREWS 12" O.C.

1" TYPE S OR S-12

SCREWS 24" O.C. SHAFT SIDE 12" MAX.

SHAFTWALL STUD 1" FIRE-SHIELD 2" x 2" x 20 GA. ANGLE

SHAFTLINER each angle fastened to
J Track with two 3/8"
Note: Type S screws for .020" studs, Type S-12 screws at ceiling
S-12 screws for .0329". and two at floor.
OUTSIDE CORNER
09260C INSIDE CORNER
Scale: 2 1/4" = 1'-0" 09260D
Scale: 2 1/4" = 1'-0"

CAVITY SHAFTWALL SYSTEMS 127

 1" FIRE-SHIELD SHAFTLINER
1" FIRE-SHIELD
SHAFTWALL SHAFTLINER
STUD

1/2" FIRE-SHIELD C
GYPSUM BOARD

2 5/8”" TYPE S OR S-12

SCREWS 24" O.C.
1 5/8" TYPE S OR S-12 1 5/8" TYPE S OR S-12 SCREWS
SCREWS 1" TYPE S OR S-12 SCREWS
12" O.C. 24" O.C.
TYPICAL START AND
END OF WALL DESIGN END OF WALL (ALTERNATE DETAIL) TYPICAL SECTION
09260A
09260B Scale: 2 1/4" = 1'-0"
Scale: 2 1/4" = 1'-0"

7' Elevator Door Frames

1" FIRE-SHIELD
SHAFTLINER
25 GA. 2 1/4" LEG
20 GA. 3" LEG J TRACK
J TRACK

SHAFTWALL
STUD

1/2" FIRE-SHIELD C
GYPSUM BOARD
1/2" FIRE-SHIELD C
GYPSUM BOARD

SHAFTWALL J TRACK FRAMING ABOVE 7'-0" 25 GA.

ELEVATOR DOOR 2 1/4" LEG
J TRACK
(Section C-C)
09260G
Scale: 2 1/4" = 1'-0"

25 GA. 2 1/4" LEG

J TRACK
1" FIRE-SHIELD
SHAFTLINER
20 GA. 3" LEG DOOR HEADER 1" FIRE-SHIELD
J TRACK SHAFTLINER
B
SHAFTWALL ELEVATOR DOOR HEAD
(Section B-B)
09260H
SHAFTWALL
STUD Scale: 2 1/4" = 1'-0"

24"
MAX.
C C
JAMB ANCHOR
CLIP
B

1" FIRE-SHIELD
SHAFTLINER 20 GA. 3" LEG
J TRACK
ELEVATOR
DOOR
FRAME 7'

A A

4'

SHAFTWALL STUD 1/2" FIRE-SHIELD C

1/2" FIRE-SHIELD C GYPSUM BOARD
GYPSUM BOARD
SHAFTWALL 7'-0" ELEVATOR DOOR JAMB
SHAFTWALL FRAMING FOR ELEVATOR DOOR UP TO 7'-0" (Section A-A)
09260E 09260F
Scale: 1/4" = 1'-0" Scale: 2 1/4" = 1'-0"

128 CAVITY SHAFTWALL SYSTEMS

 09 21 16.23/NGC

Elevator Door Frames Over 7'

20 GA. 3" LEG 25 GA. 2 1/4" LEG

J TRACK J TRACK

SHAFTWALL J TRACK FRAMING

ABOVE ELEVATOR DOOR
(Section F-F)
09260K
Scale: 2 1/4" = 1'-0"
25 GA.
2 1/4" LEG
J TRACK
1/2"
FIRE-SHIELD
C GYPSUM
BOARD

25 GA. 2 1/4" LEG

J TRACK 1" FIRE-SHIELD
SHAFTLINER
1" FIRE-SHIELD 20 GA. 3" LEG
SHAFTLINER J TRACK
SHAFTWALL ELEVATOR DOOR HEAD
E SHAFTWALL
(Section E-E)
STUD 09260L
Scale: 3" = 1'-0"

F F

E
1"
SHIM

1/2"

09 21 16.23
SHIM JAMB ANCHOR CLIP
1" FIRE-SHIELD
SHAFTLINER
20 GA. 3" LEG
J TRACK
OVER
7'

D D
4'

1/2" FIRE-SHIELD C ELEVATOR 1/2" FIRE-SHIELD C

GYPSUM BOARD DOOR FRAME GYPSUM BOARD

SHAFTWALL ELEVATOR DOOR JAMB

SHAFTWALL FRAMING FOR ELEVATOR DOOR OVER 7'-0" (Section D-D)
09260I 09260J
Scale: 1/4" = 1'-0" Scale: 2 1/4" = 1'-0"

CAVITY SHAFTWALL SYSTEMS 129

 J TRACK

CONDUIT 1" FIRE-SHIELD

SHAFTLINER

A A

1" FIRE-SHIELD 25 GA. x 3" x 28"

POSITION SHAFTLINER SHEET STEEL
INDICATOR FIREMAN
SWITCH
SHAFTWALL
STUD

FIREMAN
SWITCH
C
1/2" FIRE-SHIELD C
GYPSUM BOARD

ELEVATOR
DOOR FRAME B B 18 GA. x 3/4" x 1"
ANGLE, 2 1/2" LONG

C
CALL BOX

D D

CONDUIT 1/2 " FIRE-SHIELD C 3/4" C.R. CHANNEL

GYPSUM BOARD
CALL BOX

SHAFTWALL ELEVATOR ELECTRICAL CONTROL LAYOUT SHAFTWALL FIREMAN SWITCH AND CALL BOX
09260Z (Section CC)
Scale: 1/4" = 1'-0" 09260AA
Scale: 2 1/4" = 1'-0"

1" x 16" x 30" 25 GA. x 3" x 28"

FIRE-SHIELD SHEET STEEL RIGID ELBOW & CONDUIT 1" FIRE-SHIELD
SHAFTLINER SHAFTLINER

1/2" FIRE-SHIELD C
3/4" C.R. CHANNEL CALL BOX GYPSUM BOARD

SHAFTWALL CALL BOX SHAFTWALL WITH CONDUIT

(Section BB) (Section DD)
09260BB 09260CC
Scale: 1 1/2" = 1'-0" Scale: 1 1/2" = 1'-0"

25 GA. x 3" x 14" 25 GA. x 3" x 28"

SHEET STEEL SHEET STEEL
1" x 16" x 30"
FIRE-SHIELD
SHAFTLINER

4" SHAFTWALL POSITION INDICATOR 1" x 22" x 16" FIRE-SHIELD FIREMAN 3/4" C.R. CHANNEL
STUD SHAFTLINER SWITCH

SHAFTWALL FIREMAN SWITCH AND INDICATOR BOX

NOTE: These assemblies tested Factory Mutual (Section AA)
Design WP 621 and Factory Mutual WP 612 09260DD
Scale: 1 1/2" = 1'-0"

130 CAVITY SHAFTWALL SYSTEMS

 SHAFTWALL
STUD 09 21 16.23/NGC

1/2" FIRE-SHIELD C
GYPSUM BOARD

1-1/2" C.R. CHANNEL

FURRING
CHANNEL CLIP 1-5/8" TYPE S OR
S-12 SCREWS

ALLOW FOR MOVEMENT HERE

1" FIRE-SHIELD
CEILING TRIM CHANNEL SHAFTLINER
FURRING
CHANNEL
SHAFTWALL AT SUSPENDED CEILING
(UNRESTRAINED)
09260M

2"x2"x20 GA. SHAFTWALL

ANGLE RUNNER STUD

HANGER WIRE
FURRING
CHANNEL CLIP
OR WIRE TIE
FURRING CHANNEL

TAPE AND
GYPSUM BOARD CEILING JOINT COMPOUND

SHAFTWALL AT SUSPENDED CEILING

09 21 16.23
1" FIRE-SHIELD (RESTRAINED)
SHAFTLINER 09260N

CANTS SCREWED
TO SHAFTWALL
STUDS

2 5/8" TYPE S OR S-12 1 5/8" TYPE S OR S-12

CAULK WHERE SCREWS 12" O.C. SCREWS 36" O.C.
REQUIRED

75˚ 1" FIRE-SHIELD

SHAFTLINER

NOTE: Cant strips

generally required
to prevent ledges
more than 2" wide.

J TRACK 1/2" FIRE-SHIELD C

SHAFT CANTS MAIL CHUTE

09260P 09260O
Scale: 3" = 1'-0" Scale:3"=1'-0"

CAVITY SHAFTWALL SYSTEMS 131

 1 1/2" MIN. 8" MAX.

3"

14 GA. CONTINUOUS PAN HEAD S-12

STEEL PLATE SCREWS, 24" O.C.

J TRACK
POWER DRIVEN FASTENERS
24” O.C.

1" FIRE-SHIELD
SHAFTLINER

STUD CAVITY WALL

PARALLEL TO DECK VALLEYS
09260Q
Scale: 2 1/4" = 1'-0"

SPRAY ON FIREPROOFING

1 1/2“ MIN.
MIN. 14 GA. CONTINUOUS
STEEL PLATE
8" MAX.

1/2" TYPE S-12 PAN HEAD

SCREWS, 24” O.C.

POWER DRIVEN FASTENERS,

24" O.C.

SHAFTWALL

SHAFTWALL OFFSET
FROM STEEL BEAM
09260R
Scale: 1 1/2" = 1'-0"

132 CAVITY SHAFTWALL SYSTEMS

 09 21 16.23/NGC

SHAFTWALL SHAFTWALL
STUD BOLT APPLIED BEFORE STUD
GYPSUM BOARD ON OTHER SIDE

TOGGLE
BOLT

6" x 23 1/2" x 16 GA.

S.M. PLATE, WELD 6" x 23 1/2" x 20 GA.
OR SCREW ATTACH S.M. PLATE

HANDRAIL SUPPORT DETAILS

NOTE: HANDRAIL BRACKET SHALL HAVE A MINIMUM AREA OF 3.25 SQ. IN. AND MINIMUM WIDTH ALONG BOTTOM EDGE OF 1 3/8" IF RECTANGULAR,
AND A MINIMUM DIAMETER OF 2 3/8" IF ROUND IN ORDER TO COMPLY WITH 200 POUND PULLOUT AND/OR COMPRESSION TESTS (NFPA 101-1985
LIFE SAFETY CODE - BRACKETS).
09260U
Scale: 3" = 1'-0"

2" x 24" x 16 GA. STEEL STRAP

OUTLET OR SWITCH BOX

PAN HEAD SCREWS

SHAFTWALL
STUD

CROSS SECTION
09260V
Scale: 3" = 1'-0"

09 21 16.23
ELECTRICAL OUTLET SUPPORT
09260W
Scale: 3" = 1'-0"

6" x 26" x 20 GA.

S.M. PLATE
NO. 10 MIN. S.M. SCREWS

TYPE S
PAN HEAD SCREWS SHAFTWALL
STUD
TYPE S
PAN HEAD
SCREWS

1/2" FIRE-SHIELD C
GYPSUM BOARD

6" x 26" x 20 GA
SHEET METAL PLATE.

HANDRAIL SUPPORT DETAILS

09260T
HANDRAIL SUPPORT DETAILS Scale: 2 1/4" = 1'-0"
09260S
Scale: 2" = 1'-0"

CAVITY SHAFTWALL SYSTEMS 133

 1 5/8" TYPE S OR S-12
A 1/2" FIRE-SHIELD C SCREWS
GYPSUM BOARD SHAFTWALL
STUD, 24" O.C.

PAN HEAD
SCREWS
2 1/2" STUD
TRACK 20 GA.

2 1/2" STEEL STUDS, 16" O.C.

A

CHASE WALL
09260EE
Scale: 3" = 1'-0"

1/2" FIRE-SHIELD C
GYPSUM BOARD

2 1/2" x 20 GA. 1" FIRE-SHIELD

STUD TRACK SHAFTLINER
BRACES EVERY
HANGER ROD 2ND STUD AT
1/3 POINTS OF
LANDING STUD HEIGHT
AT 4' O.C. MAX.
SHAFTWALL
STUD

1" FIRE-SHIELD
SHAFTLINER

CERAMIC
TILE
SHAFTWALL
STUD
1/2" FIRE-SHIELD C
GYPSUM BOARD
MR GYPSUM
BOARD
STAIR HANGER ROD
09260X
Scale: 3" = 1'-0"

SHAFTWALL CHASE WALL

(SECTION A-A)
09260FF
Scale: 3" = 1'-0"

HANGER ROD SHAFTWALL STUD

1/2" FIRE-SHIELD C
GYPSUM BOARD

1" FIRE-SHIELD
SHAFTLINER

STAIRWELL STAIR HANGER ROD

09260Y
Scale: 3" = 1'-0"

134 CAVITY SHAFTWALL SYSTEMS

 09 21 16.23/NGC

Duct

b J Track Headers
with ends
slotted to fit into
shaftwall studs.
h B

J Track Length
A b+h+b and legs
cut at those
Shaftwall lengths and
Studs folded as shown
to slip into void.
Attach to J Track
header with pan
head screws.

J Track

24" 24" 24" 24"

Note: Maintain 24" module Shaftwall Stud spacing regardless of duct location.

09 21 16.23
TYPICAL DUCT OPENING
RECOMMENDED FRAMING

Shaftwall
Stud

Fasten
J Track
in this
manner Cut here and
bend down

A. B.

CAVITY SHAFTWALL SYSTEMS 135

 RECOMMENDATIONS
bound edge of shaftliner AIR SHAFTS shaftwall. However,
Shaftliner panels should be into stud. Align last panel shaftwall must be tied into
handled with care to The System is not designed to
and fasten the vertical track serve as an unlined air elevator door frames by
prevent fracturing or with appropriate fasteners being attached to jamb and
deformation of edges. supply duct. Caulking is
24" o.c. max. Fasten recommended at anchor clips with pan head
shaftliner to vertical track perimeters and penetrations screws. The 3" leg, nominal
FRAMING AND SHAFTLINER with 1 5/8" Type S or S-12 20 gauge J Track shall be
CAVITY SHAFTWALL wherever the I-Stud System
Screws 24" o.c. See is used to enclose elevators used at the juncture of the
1. Locate and lay out partition drawing on page 126 for or other shafts where elevator door frame and the
floor and ceiling lines to alternate detail. positive or negative Cavity Shaftwall System. See
ensure plumb partition. 9. Locate shaftwall horizontal pressures will exist. The drawings on pages 128 and
2. Insure accurate stud end joints within the upper contractor installing this 129 for details.
spacing to maintain and lower third points of System shall caulk in Door frames (other than
gypsum board face layer wall. Stagger joints in compliance with details elevator door frames) should
module. adjacent panels to avoid specified by the architect/ be formed from not less
3. Position top and bottom J continous horizontal joint. designer. Proper caulking than 18 gauge steel, shop
Track with long leg toward Shaftliner horizontal end will seal perimeters and primed, with throat
the shaft along ceiling, floor joints do not require taping, penetrations to minimize openings accurately formed
and vertically at column back blocking or framing. air noises and dust to the nominal wall
and/or wall where erection When using I-Studs the associated with air thickness plus 3/32". Frames
of shaftwall will begin. shaftliner panels shall be of movement. must have trim returns not
Attach with power driven sufficient length to engage FRAMING FOR OPENINGS less than 7/16" in width to
fasteners 24" o.c. max. a minimum of two I-Stud bear flush against the
tabs along the edge. Frame doors and duct gypsum board surface. Floor
4. Frame all openings cut into openings with J Track. anchor plates should be 14
partitions for ducts, etc. GYPSUM BOARD Use adequate structural gauge (min.) steel, firmly
with J Track as shown in Apply first layer of 1/2" Fire- support for openings over welded to frames and
accompanying details to Shield C (5/8" Fire-Shield) 48" wide. For openings up designed with not less than
protect cut gypsum core Gypsum Board horizontally to 48" wide, use vertical J two anchor holes 3" o.c.
edges and to provide to face of studs with screws Track on either side of minimum to prevent frame
resistance to bending and spaced 24" o.c. Apply openings. For head and sill rotation. Anchor plates
other stresses. second layer vertically with of openings, place J Track should be securely fastened
5. Cut shaftliner panels 1" less screws spaced 12" o.c. horizontally across to the floor with power
than ceiling height and (Use 1" Type S Screws on openings. Cut J Track about driven fasteners having
install first by placing first layer, 1 5/8" Type S 12" longer than openings. minimum dimensions of
outside vertical edge Screws on second layer for Then cut flanges and fold 3/16" diameter and 3/4"
against long leg of vertical 25 gauge nominal framing.) back to nest over vertical length. The type and size of
track, plumb and attach (Use 1" Type S-12 Screws J Track and fasten webs or fastener is dependent on job
with Type S 1 5/8" Screws on first layer, 1 5/8" Type flanges with two 3/8" Type conditions, type of concrete
24" o.c. S-12 Screws on second S or 1/2" Type S-12 Pan or steel framing, etc., and
layer for 20 gauge or Head Screws per must be sufficient to provide
6. Place studs within flanges connection. When nesting
of floor and ceiling track heavier framing.) Stagger all rigid, continuous anchorage
vertical and horizontal J Track to J Track, cut off to the frames. Jamb anchor
and rotate into place. Slide short flange of horizontal
stud tabs/flange snugly over joints. For proper joint clips should be formed from
treatment, maintain J Track so it will fit over 18 gauge (min.) steel, and
edge of shaftliner vertical J Track.
previously installed. uniform room temperature welded to jambs to provide
between 50˚F and 70˚F CALL BOXES AND adequate anchorage to jamb
7. Install next shaftliner panel during cold weather. Treat framing as shown on details.
between tabs/flange of POSITION INDICATORS
joints of face layer with Elevator door frames must
studs. Continue in this tape and joint compound. Protect call boxes, position
indicators and fireman’s be fastened to and
manner until end of supported by the building
partition run. Occasionally CAULKING switches as shown in
drawings on page 130. structure, separately framed
check spacing of studs to Caulk Cavity Shaftwall system and independent of the
maintain 24" module. with acoustical sealant CHASES partition. They shall be
8. At end of run, cut vertical wherever the wall is securely anchored to the
enclosing shafts where When possible, locate all
J Track at least 2" short of vertical rise, conduit, stair sills and to the building
partition height. Cut positive or negative air structure or to the track
pressure exists. Caulk hangers, etc., within wall
shaftliner 1/4" less than cavity. If the cavity in the supports. Anchors or
remaining width of perimeter of wall and at fastenings to suit the wall
any other place where 2 1/2" stud wall is not of
partition and 2" short of sufficient width, the 4" or construction are required
full height. Lay piece of voids create the possibility and shall be not more than
of moving air causing dust 6" studs can be used for
shaftliner 2" wide x length chases or erect chase walls 2' apart. See details on
of opening in floor track as accumulation, noise or pages 128 and 129 for
smoke leakage. Caulking as shown on page 134.
support for last shaftliner connection of partition and
panel. Fit cut edge of shall be done in ELEVATOR DOORS elevator door frames.
shaftliner into vertical track compliance with details Elevator door frames must be
and, holding shaftliner and specified by the braced and supported
track together, slide paper architect/designer. independently of the

136 CAVITY SHAFTWALL SYSTEMS

 09 21 16.23/NGC
Horizontal Shaftwall Duct and Ceiling Assemblies
DESCRIPTION DETAILS

I-Stud Cavity Shaftwall Similarly, single layer 5/8" J TRACK POWER DRIVEN FASTENERS
Systems can be erected Fire-Shield or Fire-Shield C 24” O.C.
horizontally and used as Gypsum Board attached to FLEXIBLE SEALANT
economical fire resistive the stud flanges opposite
assemblies for corridor the Shaftliner panels DUCT
ceilings, stair soffits, and provide 1-hour fire 1/2" TYPE S OR S-12
protection for mechanical protection when used as a PAN HEAD SCREWS
(2 PER STUD)
ducts. corridor ceiling or stair
The I-Stud Cavity Shaftwall soffit.*
System for Horizontal Duct LIMITATIONS POWER DRIVEN FASTENERS
24" O.C. 1" FIRE-SHIELD
Protection consists of I- I-Stud Cavity Shaftwall SHAFTLINER
Studs 24" o.c. with 1" Fire- Systems erected
Shield Shaftliner panels horizontally for corridor
J TRACK
inserted in the stud tabs, ceilings or stair soffits are
and three layers of 1/2" designed to carry their own
J TRACK
Fire-Shield C Gypsum deadweight only, and
Board attached to the stud should not be used where
flanges opposite the there is access to an attic
Shaftliner panels. This or loft above, or any 1/2" FIRE-SHIELD C I-STUD 24" O.C.
System provides fire probability of storage.
GYPSUM BOARD
protection for mechanical
ducts and has been tested In addition, the 2-hour
from both sides. horizontal duct protection TWO HOUR HORIZONTAL DUCT PROTECTION
system is not designed WHI 694-0300.1
Two layers of 1/2" Fire-Shield to carry live loads or the 09260GG
C Gypsum Board attached weight of the mechanical Scale: 2" = 1'-0"
to the stud flanges opposite ducting it is protecting.
the Shaftliner provide 2-
hour fire protection when Maximum allowable
used as a corridor ceiling or horizontal spans of each
stair soffit.* system are shown in the
table below.

TECHNICAL DATA

MAXIMUM HORIZONTAL SPANS FOR I-STUD ASSEMBLIES

Corridor Ceilings And Horizontal Membrane
Stair Soffits And Duct Protection

09 21 16.23
Stud Size Minimum Steel Thickness 1-Hour Fire 2-Hour Fire 2-Hour Fire
in. (mm) in. (mm) Resistive Rating Resistive Rating Resistive Rating
2 1/2" (63.5 mm) 0.020 (.508) 7'-8" (2337 mm) 7'-8" (2337 mm) 7'-2" (2184 mm)
2 1/2" (63.5 mm) 0.0329 (.836) 8'-8" (2642 mm) 9'-4" (2845 mm) 8'-8" (2642 mm)
4" (102 mm) 0.020 (.508) 10'-3" (3124 mm) 10'-9" (3277 mm) 10'-0" (3048 mm)
4" (102 mm) 0.0329 (.836) 11'- 9" (3581 mm) 12'-1" (3683 mm) 11'-3" (3429 mm)
6" (152 mm) 0.0329 (.836) 14'- 10" (4521 mm) 14'-10" (4521 mm) 13'-10" (4216 mm)
Note: Spans based on L/240 deflection and twice the dead load weight, and 24" o.c. stud spacing.

DETAILS

I-STUD 1" FIRE-SHIELD J TRACK

I-STUD 1" FIRE-SHIELD
24" O.C. SHAFTLINER J TRACK SHAFTLINER
24" O.C.

1" TYPE S OR S-12

SCREWS 12" O.C.
1 5/8" TYPE S OR S-12
SCREWS 12" O.C.
5/8" FIRE-SHIELD
GYPSUM BOARD 1/2" FIRE-SHIELD C
GYPSUM BOARD
ONE HOUR HORIZONTAL SHAFTWALL- TWO HOUR
CORRIDOR CEILING AND STAIR SOFFIT* CORRIDOR CEILING AND STAIR SOFFIT*
09260II 09260HH
Scale: 3" = 1'-0" Scale: 3" = 1'-0"

*See ICBO Evaluation Services, Inc. Evaluation Report No. 3579 for allowable values and/or conditions of use concerning material
presented in this document. It’s subject to re-examinations, revisions, and possible cancellations.

CAVITY SHAFTWALL SYSTEMS 137

 SPECIFICATIONS

SECTION 09 21 16.23 4. Fire-Resistant Mold-Resistant Gypsum Board:

SHAFTWALL SYSTEMS A gypsum core wall panel with additives to enhance
fire resistance and the water resistance of the core;
THE FOLLOWING PARAGRAPHS ARE FOR INSERTION INTO SECTIONS OF surfaced with a moisture/mold/mildew resistant paper
GENERIC SPECIFICATIONS OR GENERIC/PROPRIETARY SPECIFICATIONS COVERING on front, back and long edges and complying with
SHAFTWALL PRODUCTS. THE NATIONAL GYPSUM COMPANY PRODUCT ASTM C 1396, type X.
NAME FOLLOWS THE GENERIC DESCRIPTION IN PARENTHESES.
a. Thickness: 1/2" (Gold Bond BRAND XP Fire-Shield C
PART 1 GENERAL Gypsum Board) 5/8" (Gold Bond BRAND XP Fire-Shield
1.02 REFERENCES Gypsum Board.
b. Width: 4'
A. American Society for Testing and Materials (ASTM): c. Length: 8', 10' or 12'
1. C 840, Specification for Application and Finishing of d. Edges: Square or Tapered
Gypsum Board. e. Mold and Mildew Resistance: Panel score of 10,
2. C 1396, Specification for Gypsum Board. when tested in accordance with ASTM D 3273
PART 2 PRODUCTS 5. Fire-Resistant Plaster Base: A gypsum core panel with
additives to enhance the fire resistance of the core and
2.02 MATERIALS
surfaced with absorptive paper on front, back, and long edges
A. Gypsum Board: and complying with ASTM C 1396; Type X.
1. Fire-Resistant Gypsum Shaftliner Board: A gypsum core a. Thickness: 1/2" (Kal-Kore BRAND Fire-Shield C Plaster
shaftwall panel with additives to enhance fire resistance Base); 5/8" (Kal-Kore BRAND Fire-Shield Plaster Base).
of the core and surfaced with water repellent paper on b. Width: 4'
front, back, and long edges and complying with ASTM c. Length: 8' and 12'
C 1396, Type X (Gold Bond BRAND Fire-Shield Shaftliner). d. Edges: Tapered
a. Thickness: 1" B. Joint Treatment
b. Width: 2'
c. Length: 7' through 14' 1. Tape: 2 1/16" wide paper reinforcing tape (ProForm
d. Edges: Beveled BRAND Joint Tape).

2. Fire-Resistant Mold-Resistant Gypsum Shaftliner Board: 2. Compound: Drying type pre-mixed compound (ProForm
A gypsum core shaftwall board with additives to enhance BRAND Multi-Use Joint Compound, ProForm BRAND All-
fire resistance of the core and surfaced with a Purpose Joint Compound, regular grade and machine
moisture/mold/mildew resistant paper on front, back, and grade, ProForm BRAND Lite Joint Compound, ProForm
long edges; and complying with ASTM C1396, Type X BRAND Ultra Joint Compound, and ProForm BRAND XP Joint
(Gold Bond BRAND Fire-Shield Shaftliner XP). Compound).
a. Thickness: 1" 3. Compound: Drying type job mixed vinyl base compound
b. Width: 2' (ProForm BRAND Triple-T Compound).
c. Length: 7' through 14' 4. Compound: Drying type topping compound, pre-mixed
d. Edges: Beveled (ProForm BRAND Topping Joint Compound, ProForm BRAND
e. Mold and Mildew Resistance: Panel score of 10, Ultra Joint Compound).
when tested in accordance with ASTM D 3273 5. Compound: Setting type job mixed chemical-hardening
3. Fire-Resistant Gypsum Board: A gypsum core wall panel compound (ProForm BRAND Sta-Smooth Joint Compound,
with additives to enhance fire resistance of the core and ProForm BRAND Sta-Smooth Lite Joint Compound).
surface with paper on front, back, and long edges and
complying with ASTM C 1396, Type X. PART 3 EXECUTION
a. Thickness: 1/2" (Gold Bond BRAND Fire-Shield C 3.01 INSTALLATION
Gypsum Board), 5/8" (Gold Bond BRAND Fire-Shield A. Install studs, tracks, shaftliner, gypsum board, accessories,
Gypsum Board), or 5/8" (Gold Bond BRAND Fire-Shield and finish gypsum board joints in accordance with the
C Gypsum Board). following ASTM Standards and manufacturer's
b. Width: 4' recommendations:
c. Length: 6' through 16' 1. ASTM Standards:
(1/2" Fire-Shield C Gypsum Board, a. Metal Framing: C 754
5/8" Fire-Shield Gypsum Board)
Length: 8' through 14' b. Joint Treatment: C 840.
(5/8" Fire-Shield C Gypsum Board) 2. Manufacturer’s Recommendations: National Gypsum
d. Edges: Square, Tapered, or Beveled Taper Company “Gypsum Construction Guide.”
(Sta-Smooth edge)

138 CAVITY SHAFTWALL SYSTEMS

12TH EDITION 09 21 16.33/NGC

H-Stud Area Separation Wall

System

09 21 16.33

139
H-STUD AREA SEPARATION WALL SYSTEM

The fire-protection of gypsum-based Area Separation Walls is demonstrated in dramatic fashion

by the results of this actual townhouse fire in which the two-hour fire-rated assembly performed
as expected in protecting adjacent properties. Break-away feature allowed collapse of fire-side
structural framing without pulling down the entire wall.

DESCRIPTION
2. The Area Separation Wall
SOLID TYPE AREA any adjacent framing Steel framing and XP System may be built up to
SEPARATION WALL members. When a 3/4" Gypsum Board products a maximum of 66' high.
The H-Stud Area Separation air space cannot be permit temporary exposure 3. Insulation in the Area
Wall consists of 2" light- maintained, the H-Stud to inclement weather Separation Wall must be
gauge steel H-Studs which and H-Stud Tracks are during construction, but protected from wetting and
secure two layers of 1" Fire- covered by screw-attached the constructed Area therefore shall not be
Shield Shaftliner or 1" Fire- 6" wide battens fabricated Separation Wall should be installed until building is
Shield Shaftliner XP board from 1/2" Fire-Shield C protected from inclement closed-in.
between adjacent studs. Gypsum Board; or 1/2" weather as soon as
Fire-Shield C Gypsum possible. Materials 4. XP Gypsum Board or
Shaftliner board is faced with Board boards can be supplied to the job site Gypsum Sheathing shall
green moisture-resistant fastened to the H-Studs should be stored properly, be used on faces of stud
paper and Shaftliner XP and joints* covered with supported off the ground framing of Area Separation
board is faced with purple tape and joint compound and protected from Walls which project
moisture/mold/mildew- to provide a finished wall. inclement weather. beyond roof or side walls.
resistant paper on both Mineral wool or glass fiber
sides for protection against can be installed in
weather during installation. adjacent cavity shaftwalls
Shaftliner panels have a to provide higher STC TYPICAL FLOOR/CEILING JUNCTURE
beveled edge configuration ratings. 1" FIRE-SHIELD
allowing for simple SHAFTLINER
installation into the H- Steel H-Stud framing
Studs. members are attached on DOUBLE H-STUD TRACK
each side to adjacent (back to back)
The H-Studs are secured at the framing with breakaway,
foundation floor by the heat softenable aluminum
flanges of H-Stud Track. ASW Clips.
The same track is used
FLOOR TRIM
back-to-back at *Refer to UL Design U347.
intermediate floors to NOTE: ICC ES Inc. Legacy
provide a splicing means Report 90-26.01 requires a
so that the System can be 1" minimum air space.
erected one floor at a time. FIRE BLOCKING CEILING
H-Stud Track is also used at 1" FIRE-SHIELD
the roof line or at the TECHNICAL DATA SHAFTLINER OR
MINERAL WOOL
parapet and at wall ends.
GYPSUM
For a fire-rated assembly 1. Area Separation Walls are BOARD
without the need for nonload-bearing walls. ASW CLIP
battens, a minimum 3/4" They should not be used
air space shall be where exposed to constant STRINGER
maintained between H-STUD
dampness and/or water.
the H-Stud assembly and
TOP PLATE
3/4" AIR SPACE STUD
140 H-STUD AREA SEPARATION WALL SYSTEM
 09 21 16.33/NGC

AREA SEPARATION WALL LIMITING HEIGHTS

AREA SEPARATION
WALL CLIP
The framing attachment ASW
Clips are made from 0.050"
Roof aluminum alloy that softens
at about 1000˚F. They are
formed in the shape of an
Double angle and are available
H-Stud Track
(back to back) 2" wide with legs either
1" x 2", 1" x 2.5" or 2" x
2.5". Clips are attached to
vertical steel H-Stud framing
using one 3/8" Type S pan
1" Fire-Shield head screw and to adjacent
Shaftliner XP framing with one 1 1/4"
Type W screw.

23' Trim
Walls up to 23' 2"
space clips a
maximum of
10' o.c. XP Gypsum
Board

Fire Blocking 2"

1" Fire-Shield
Shaftliner or
Mineral Wool
.050 ASW CLIP
Ceiling .063" THICK AVAILABLE
ON SPECIAL ORDER
2.5"
Stud
54'
Walls up to 54' space H-Stud
clips a maximum of
5' o.c. for wall sections Floor
below the upper 23'
2"

66'
Walls up to 66' space ASW Clip
clips a maximum of
39" o.c. for wall sections
below the upper 54'

09 21 16.33
Stringer

Top Plate

H-STUD
Blocking

Minimum 1"
3/4" Air Space

2"
Slab or
Foundation
H-STUD TRACK

H-STUD AREA SEPARATION WALL SYSTEM 141

 DETAILS
2" H-STUD
AREA SEP. WALL 5/8" FIRE-SHIELD
GYPSUM SHEATHING
1" FIRE-SHIELD 4' EACH SIDE (OR AS
SHAFTLINER REQUIRED BY LOCAL CODES)
2" H-STUD INTERIOR
GYPSUM FACINGS
DOUBLE H-STUD TRACK SCREWED AS SPECIFIED
BACK-TO-BACK
INTERIOR
WALL EXTERIOR
FRAMING FACING
2" H-STUD
SEALANT
FLOOR 2" H-STUD
TRACK
1" FIRE-SHIELD
SHAFTLINER

GYPSUM BOARD OR MINERAL CAULK

WOOL FILLER FIRE BLOCKING JOIST
(SMOKETIGHT
JOINT)
3/4" AIR SPACE

CEILING
1 1/4" TYPE W SCREW

3/8" TYPE S
PAN HEAD SCREW
ASW CLIP
EXTERIOR WALL
GYPSUM FACINGS FRAMING
AS SPECIFIED EXTERIOR WALL INTERSECTION
09265M
3/4" AIR SPACE INSULATION Scale: 1" = 1'-0"

INTERMEDIATE FLOOR INTERSECTION* 2" H-STUD

LOCATION OF ASW CLIPS AREA SEP. WALL
09265I 3/4" AIR
Scale: 1" = 1'-0" 2" H-STUD SPACE

1" FIRE-SHIELD
SHAFTLINER

INSULATION
2"x 4" STUD

TYPICAL WALL CROSS SECTION*

09265G
Scale: 1/2" = 1'-0"
CAULK
(SMOKE TIGHT JOINT) 2" H-STUD TRACK
1 LAYER OF
5/8" FIRE-SHIELD PARAPET
BOARD 4' EACH SIDE CAP
ROOFING
(OR AS REQUIRED BY
LOCAL CODES). ROOF DECK 2" H-STUD TRACK

FLASHING
AS REQUIRED (OR AS ROOFING
REQUIRED BY LOCAL CODES)

GYPSUM BOARD
OR MINERAL
WOOL FILLER
FIRE BLOCKING

2" H-STUD GYPSUM BOARD GYPSUM

18" OR MINERAL BOARD
MINIMUM WOOL FILLER
ASW FIRE BLOCKING
CLIP ASW 2"x 4" FRAMING
CLIP
1" FIRE-SHIELD
3/4" AIR SPACE
SHAFTLINER
1" FIRE-SHIELD
SHAFTLINER 2" H-STUD
GYPSUM BOARD 3/4" AIR SPACE
OR MINERAL WOOL AREA SEP. WALL
FIRE BLOCKING
TYPICAL ROOF JUNCTION DETAIL TYPICAL ROOF PARAPET DETAIL
09265K 09265J
Scale: 1" = 1'-0" Scale: 1" = 1'-0"

*When a 3/4" air space cannot be maintained between the H-Stud assembly and adjacent framing members, 1/2" Fire-Shield C Gypsum battens
are required to cover H-Studs and H-Stud Track.

142 H-STUD AREA SEPARATION WALL SYSTEM

 INTERIOR 09 21 16.33/NGC
GYPSUM FACINGS
AS SPECIFIED
EXTERIOR
FACING

3/4" AIR
2" H-STUD SPACE
FLASHING AREA SEP. WALL
2" H-STUD CAULKING 3/4" AIR INSULATION
SPACE
CAP
GYPSUM FACINGS
1" FIRE-SHIELD AS SPECIFIED
SHAFTLINER

3/4" AIR 2" H-STUD 1" FIRE-SHIELD

SPACE TRACK SHAFTLINER

INTERIOR
WALL FRAMING
EXTERIOR WALL
FRAMING
2" x 4" PLATE
GYPSUM OR
MINERAL WOOL
FIRE BLOCKING

AS REQ'D
SEALANT
2" H-STUD TRACK
PROTRUDING EXTERIOR WALL*
09265L TYPICAL FOUNDATION DETAIL*
Scale: 1" = 1'-0" 09265H
Scale: 1/2" = 1'-0"

*When a 3/4" air space cannot be maintained between the H-Stud assembly and adjacent framing members, 1/2" Fire-Shield C Gypsum battens are
required to cover H-Studs and H-Stud Track.

RECOMMENDATION be set into position from 2" H-Stud Track. Fasten INTERMEDIATE FLOORS
the basement floor or fed H-Stud track flanges at all AND ROOF INSTALLATION
Order H-Studs and 1" down through the space corners on both sides with 1. Attach 2" H-Stud Track to
Fire-Shield Shaftliner provided in the wood 3/8" Type S pan head the already installed
according to the following framing from the floor screws. capping track of the lower
outline: above. 8. The top edge of the floor’s wall. This back-to-
4. Making sure that both back track installation
Basement wall section – erected wall is then allows the Area Separation
length equal to distance pieces of Shaftliner are capped off by placing 2" Wall to be erected one
from foundation floor to seated all the way into the H-Stud Track over studs floor at a time. Secure the
approximately 3" above floor and wall tracks and and boards. Track may be two tracks together with
floor line of first floor. that their edges are flush, screw fastened to H-Studs two 3/8" Type S pan head
insert an H-Stud into the with 3/8" Type S pan head Screws 24" o.c. Stagger
Intermediate floors – length floor track and engage the screws to assist with back-to-back track joints
equal to distance between H-Stud legs over the long installation. a minimum of 12".
floor lines. edges of the Shaftliner 2. Erect Shaftliner and H-Studs
9. Attach studs to adjacent in the same manner as for
Topmost floor – length to boards. Seat the H-Stud wood framing with ASW
extend to top of parapet fully so the board edges the basement wall, steps 4-
Clips. Secure the clips to 10, except that starting and
wall or to roof inter- contact the stud web. the studs with one 3/8" ending procedures vary
section, depending 5. Continue in this manner, Type S Pan Head Screw depending on the exterior
on detail. erecting two thicknesses through the short leg of wall intersection detail. See
BASEMENT WALL of Shaftliner, and installing the clip. The ASW Clips drawing details.
INSTALLATION the legs of the H-Stud over may be attached directly 3. At roof intersection the
the Shaftliner edges until to the steel studs or walls are capped-off with
1. Beginning at foundation wall is completed. Again, H-Stud track. Track may be
floor, attach 2" H-Stud through the gypsum board
make sure all studs and batten face into the studs. fastened to H-Stud with

09 21 16.33
Track to concrete with boards are tightly pushed 3/8" Type S pan head
power-driven fasteners 10. A minimum 3/4" air space screws to assist with
together. Floor track may shall be maintained installation. H-Studs are
spaced 24" o.c. Apply be screw fastened to
acoustical sealant along between the H-Stud fastened to wood framing
H-Studs with 3/8" Type S assembly and any with ASW Clips. The
edges of track at floor line. pan head screws to assist specific framing procedure
2. Install H-Stud Track on adjacent framing varies according to roof
with installation. members.* When a 3/4"
foundation walls where junction drawing details.
6. If the Area Separation air space cannot be
Area Separation Wall Wall terminates at a 4. Fire blocking must be
intersects, if applicable. maintained, gypsum board provided at intermediate
foundation wall, the last batten strips are installed floors and roof locations as
Fasten with power-driven two Shaftliner boards will
fasteners 24" o.c. Caulk over H-Studs and H-Stud shown in drawing details.
have to be inserted from Track on both sides of the Mineral wool or gypsum
edges as with floor track. the floor above. Boards wall. 3" wide battens are board filler may be used.
3. At intersection of are pushed down into the installed over H-Stud *Refer to UL Design U347.
foundation or exterior wall channel formed by the Track at foundation and
and Area Separation Wall previous H-Stud’s legs and roof. 6" battens are screw- NOTE: ICC Es, Inc. Legacy
begin erecting by inserting the legs of the wall track. attached to H-Studs with Report 90-26.01 requires
first layer of 1" Shaftliner 1" Type S screws spaced a 1" minimum air space.
7. If the Area Separation
into floor and wall track. Wall terminates at or past 12" o.c. screwed into
Insert second layer back- a framed wall, insert the alternate legs of H-Stud.
to-back with first and seat last boards conventionally Battens are cut from sheets
into floor and wall track. and cap the end of the of 1/2" Fire-Shield C
Shaftliner and studs may Area Separation Wall with Gypsum Board.

H-STUD AREA SEPARATION WALL SYSTEM 143

INTERIOR FACINGS 2. Fire-Resistant Mold-Resistant Gypsum Shaftliner Board:
1. 2" H-Stud Area Separation Wall can be finished in a variety of A gypsum core shaftwall board with additives to
ways depending on wall installation. For load-bearing enhance fire resistance of the core and surfaced with a
applications, wood stud walls meeting required codes must moisture/mold/mildew resistant paper on front, back,
be erected flanking the Area Separation Wall. Stud walls are and long edges; and complying with ASTM C 1396,
then finished in whatever method is specified. For nonload- Type X (Gold Bond BRAND Fire-Shield Shaftliner XP).
bearing applications, finished wall may be of any type a. Thickness: 1"
meeting local codes including exposed Shaftliner and battens b. Width: 2'
where appearance is not critical. c. Length: 7' through 14'
d. Edges: Beveled
1" FIRE-SHIELD e. Mold and Mildew Resistance: Panel score of 10,
GYPSUM SHAFTLINER when tested in accordance with ASTM D 3273
2" H-STUD TRACK 3. Fire-Resistant Gypsum Board: A gypsum core wall
board with additives to enhance fire resistance of the
core and surfaced with paper on front, back, and long
edges and complying with ASTM C 1396, Type X
(Gold Bond BRAND Fire-Shield C Gypsum Board).
a. Thickness: 1/2"
b. Width: 4'
c. Length: 6' through 16'
d. Edges: Square, Tapered, or Beveled Taper
(Sta-Smooth Edge)
4. Fire-Resistant Mold-Resistant Gypsum Board:
A gypsum core wall panel with additives to enhance
2" H-STUD fire resistance and the water resistance of the core;
TRACK surfaced with a moisture/mold/mildew resistant paper
on front, back, and long edges and complying with
2" H-STUD ASTM C 1396, type X (Gold Bond BRAND XP
Fire-Shield C Gypsum Board).
a. Thickness: 1/2"
b. Width: 4'
c. Length: 8' 10' or 12'
d. Edges: Square or Tapered
1/2" FIRE-SHIELD C
e. Mold and Mildew Resistance: Panel score of 10,
when tested in accordance with ASTM D 3273
GYPSUM BATTEN*
BASIC COMPONENTS OF 2" H-STUD AREA SEPARATION WALL PART 3 EXECUTION
(ASW CLIPS NOT SHOWN)
3.01 INSTALLATION
* Battens not required when minimum 3/4" air space is A. General: In accordance with the manufacturer’s
maintained between H-stud wall and adjacent wood framing. recommendations, National Gypsum Company
“Gypsum Construction Guide.”

SPECIFICATIONS

SECTION 09 21 16.33
AREA SEPARATION WALL
THE FOLLOWING PARAGRAPHS ARE FOR INSERTION INTO SECTIONS OF
GENERIC SPECIFICATIONS OR GENERIC/PROPRIETARY SPECIFICATIONS
COVERING GYPSUM BOARD PRODUCTS FOR AREA SEPARATION WALLS.
THE NATIONAL GYPSUM COMPANY PRODUCT NAME FOLLOWS THE
GENERIC DESCRIPTION IN PARENTHESES.

PART 1 GENERAL
1.02 REFERENCES
A. American Society for Testing and Materials (ASTM):
1. C 1396, Specification for Gypsum Board.

PART 2 PRODUCTS
2.02 MATERIALS
A. Gypsum Board:
1. Fire-Resistant Gypsum Shaftliner Board: A gypsum core
shaftwall board with additives to enhance fire resistance of
the core and surfaced with water repellant paper on front,
back, and long edges and complying with ASTM C 1396,
Type X (Gold Bond BRAND Fire-Shield Shaftliner).
a. Thickness: 1"
b. Width: 2'
c. Length: 7' through 14'
d. Edges: Beveled

144 H-STUD AREA SEPARATION WALL SYSTEM

12TH EDITION ®
09 28 00/NGC

PermaBase BRAND
Cement Board
Construction Guide

09 28 00

145
PERMABASE® BRAND CEMENT BOARD

DESCRIPTION

PermaBase® BRAND Cement

Board is a rigid substrate made
of Portland cement, aggregate
and glass mesh that provides an
exceptionally hard, durable sur-
face that is able to withstand pro-
longed exposure to moisture.
PermaBase offers a competitive
advantage over similar prod-
ucts on the market with its
patented EdgeTech® technology.
The tapered, double-wrapped
edge design allows for closer
nail or screw application to the
edge.

B
FEATURES/BENEFITS
A C

Double-wrapped edge with
EdgeTech technology allows
for closer fastener applica-
tion of nails or screws at the
edge without crumbling or
spinout.

IRC and IBC 2006
Compliant – Meets ASTM C A. Double-wrapped
1325.
edge with EdgeTech®

PermaBase resists the technology
growth of mold and mildew
achieving a panel score of B. Fiberglass mesh
10, the highest score possi-
ble, per ASTM D 3273.* C. Cementitious core

Homogeneous core has
fewer voids and provides a
PermaBase has a smoother
very easy and clean score finish than other brands and
and snap. has no open edges, which

Can be cut utilizing a stan- reduces hand chafing.
dard utility knife and
1/4" PermaBase is ideal for
straightedge. With remodeling applications
PermaBase’s unique core because it can be applied
composition, little or no directly over a variety of
additional labor is needed to existing countertop surfaces.
clean the edge after a cut.

As a floor underlayment 1/4"

PermaBase is impact resis- PermaBase eliminates the
tant, extremely durable and need to modify adjacent
dimensionally stable. It has thresholds when abutting to
excellent overall flexural, carpeting, wood flooring and
compressive and tensile other common flooring
strength characteristics.
Available in various widths,
materials.
lengths and thicknesses.
GridMarX®

PermaBase is highly mois-
Lowest water absorption of
ture resistant, and will not 1/4" PermaBase Underlayment
any cement board per ASTM
Can be used in 24" o.c. has GridMarX, a pre-printed
rot, disintegrate or swell C 473. floor truss construction, with
when exposed to water. fastening pattern that ensures
specific requirements. the proper number of fasteners

Can be used in residential

1/2" PermaBase may be and commercial saunas and
Suitable for both interior while taking the guesswork out
used in 1 hour and 2 hour steam rooms. and exterior applications. of spacing, layout and trim-
rated assemblies and is UL ming.
Classified.

*When tested by an independent laboratory per ASTM D 3273 ("Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber"),
PermaBase achieved a panel score of 10, the highest score possible, indicating no mold growth under the laboratory test conditions. The use of PermaBase in actual installations may not produce
the same results as were achieved in controlled laboratory conditions. No material can be considered "mold proof," nor is it certain that any material will resist mold indefinitely.

146 PERMABASE® BRAND CEMENT BOARD

 09 28 00/NGC

WARRANTY COMPOSITION SIZES & PACKAGING

Size: Thickness, Width & Length # of Pcs. Per Unit

30-year limited warranty for CEMENTITIOUS BACKER PermaBase Cement Board
interior applications. UNIT (CBU): PermaBase

10-year limited warranty for Cement Board is a nailable, 1/2" x 32" x 5' (12.7 mm x 813 mm x 1524 mm) 50
exterior applications. screwable backerboard and
underlayment panel which is 1/2" x 36" x 4' (12.7 mm x 914 mm x 1219 mm) 50
composed of Portland
LIMITATIONS cement, aggregates and rein- 1/2" x 36" x 5' (12.7 mm x 914 mm x 1524 mm) 50
forcements that has a signifi- 1/2" x 36" x 6' (12.7 mm x 914 mm x 1829 mm) 50
cant ability to remain unaf-

Joints should be treated with fected by prolonged exposure 1/2" x 36" x 8' (12.7 mm x 914 mm x 2438 mm) 30
alkali resistant fiberglass to moisture. PermaBase com-
mesh tape set in a latex- plies with ASTM C 1325 and 1/2" x 48" x 8' (12.7 mm x 1219 mm x 2438 mm) 30
Portland cement mortar. ANSI A118.9.
5/8" x 36" x 5' (15.9 mm x 914 mm x 1524 mm) 35

Conventional paper drywall
tape, joint compound and ACCESSORIES 5/8" x 48" x 8' (15.9 mm x 1219 mm x 2438 mm) 24
drywall nails or screws
should not be used. 3/8" x 48" x 8' (9.5 mm x 1219 mm x 2438 mm) 40*
JOINT REINFORCEMENT:

Maximum wall framing PermaBase mesh tape must 3/4" x 48" x 8' (19.0 mm x 1219 mm x 2438 mm) 20*
spacing should not exceed be used on all edges and cuts
16" o.c. and must be made to size. Use 2" wide 1" x 32" x 8' (25.4 mm x 813 mm x 2438 mm) 20*
designed to limit deflection polymer-coated (alkali resis-
to L/360 under all live and tant) mesh tape for interior PermaBase Underlayment
dead loads. applications and 4" wide
polymer-coated (alkali resis- 1/4" x 48" x 4' (7.9 mm x 1219 mm x 1219 mm) 50

Steel wall framing must be 20
ga. (galvanized) or heavier – tant) mesh tape for exterior 1/4" x 36" x 5' (7.9 mm x 914 mm x 1524 mm) 50
16" o.c. applications.
BONDING MATERIALS: Treat * Special order

1/4" PermaBase should not
be used on walls or ceilings. joint and set facing material
preferably with latex-Portland COMPARISON CHART

PermaBase Cement Board is cement mortar or with dry-set
not a water barrier. Consult (thin-set) mortar. All mortars Other Fiber
local building code for mois- should comply with ANSI Cement Cement
ture barrier requirements. Physical Feature Benefits PermaBase Boards Boards
A118.1 or A118.4 standards.

Not recommended for use Type 1 organic adhesive meet- Lowest Weight Glass Mesh Cement Board 䢇 䡬 䡬
with vinyl flooring. ing ANSI A-136.1 may be uti-
lized for interior use only. Double-Wrapped Edge 䢇 䡬 䡬

For exterior and interior fin-
ishes applied direct to FASTENERS: Galvanized roof- Fastens Near Edge With No Breakout 䢇 䡬 䡬
PermaBase, reinforcing ing nails, 1-1/2" long with hot
mesh must be embedded in dipped galvanized coating, for Highest Damage Resistancy From Handling 䢇 䡬 䡬
basecoat. use with wood framing. Nails
Consult finish manufacturer should meet Federal Cleanest To Score And Snap 䢇 䡬 䡬
for additional requirements. Specification #FF-N105B/ type
2 style 20. Lowest Water Absorption 䢇 䡬 䡬

PermaBase Cement Board
should not be exposed to PermaBase corrosion resistant Meets 40 psf Rating Wind Load Test Results 䢇 䡬 䡬
temperatures over 220˚F screws or equivalent, 1-1/4" or (Stud spacing 16" o.c.)
(105˚C). 1-5/8" long, for use with wood
framing. Type S-12 screws or Cuts With Utility Knife vs. Power Tools 䢇 䢇 䡬
equivalent, 1-1/4" or 1-5/8" Standard Fasteners Countersink Into Board 䢇 䢇 䡬
long, for use with 20 ga. or
heavier steel framing. Can Be Used In Both Residential and 䢇 䢇 䡬
Commercial Steam Rooms And Saunas

Fewer Expansion Joints Needed 䢇 䢇 䡬

09 28 00

TAPE & SCREWS Inorganic vs. Organic Core 䢇 䢇 䡬

National Gypsum
recommends the 30-Year Warranty For Interior Use 䢇 䢇 䡬
use of PermaBase
Tape and 10-Year Warranty For Exterior Use 䢇 䢇 䡬
PermaBase Screws
to complete your Product Feature: 䢇Yes 䡬No
installation.

PERMABASE® BRAND CEMENT BOARD 147

INTERIOR APPLICATIONS

APPLICATIONS TUB & SHOWER SURROUND

An ideal underlayment for

interior applications such as:

Shower and tub enclosures

Garden/whirlpool tubs

Countertops

Backsplashes

Steamrooms and saunas

Swimming pool and
whirlpool decks and
enclosures

Floor underlayment
– Entryways
– Kitchens
– Bathrooms
– Foyers
– Laundry rooms

INSTALLATION

GENERAL: All framing should

comply with local building 2"x 4" Wood Studs or
code requirements and be XP® Gypsum
20 ga. 3-5/8" Metal
designed to provide support Studs 16" o.c.
Board
with a maximum allowable
deflection of L/360 under all
Fiberglass
intended loads. Framing mem- Mesh Tape
bers should be spaced a maxi- (Alkali Resistant)
mum of 16" o.c.
PermaBase
Note: Cut or score PermaBase Cement Board
on printed side of panel. Install
tile and tile setting materials in
accordance with current ANSI
PermaBase Cement
specifications and Tile Council Tile Board
of America (TCA) guidelines. Screws, 8" o.c.
CONTROL JOINTS: For interior Adhesive or
installations, allow a maximum Latex-Portland
of 30 lineal feet between control Cement PermaBase
Mortar Cement Board
joints. A control joint must be
installed but not limited to the
following locations: where
expansion joints occur in the
framing or building (discontinue
all cross furring members located
behind joint); when boards abut
dissimilar materials; where fram-
ing material changes;
at changes of building shape or
structural system; at each story Do not install PermaBase directly (including insulation, PERMABASE CEMENT BOARD:
separation. Place control joints at over protrusions from stud plane PermaBase, bonding material Apply PermaBase with ends and
corners of window and door such as heavy brackets and fas- and facing material) should not edges closely butted but not
openings, or follow specifica- tener heads. Studs above a exceed L/360. The dead load forced together. Stagger ends
tions of architect. Control joint shower floor should either be applied to the ceiling frame joints in successive courses. Drive
cavity shall not be filled with notched or furred to accommo- should not exceed 10 psf. fasteners into field of cement
coating or other materials. date the thickness of the water- Ceiling joist or furring channel board first, working toward ends
WALLS & CEILINGS proof membrane or pan. The sur- should not exceed 16" o.c. and edges. Space fasteners max-
round opening for a tub or pre- (Edges of PermaBase imum 8" o.c. for walls, 6" o.c.
WALL FRAMING: Edges of cast shower receptor should not parallel to framing should be for ceilings with perimeter fas-
PermaBase parallel to framing be more than 1/4" longer than continuously supported.) teners at least 3/8" and less than
should be continuously support- unit to be installed. Provide additional blocking 5/8" from ends and edges.
ed. Provide additional blocking when necessary to permit prop- Ensure PermaBase is tight to
when necessary to permit proper CEILING FRAMING: The
deflection of the complete ceil- er PermaBase attachment. framing.
PermaBase attachment.
ing assembly due to dead load

148 PERMABASE® BRAND CEMENT BOARD

 09 28 00/NGC

FLOOR UNDERLAYMENT COUNTERTOP

Tile
Latex-Portland Tile
Cement Mortar
Fiberglass Mesh Tape Latex-Portland
(Alkali Resistant) Cement Mortar

PermaBase
Cement Board Fiberglass Mesh Tape
(Alkali Resistant)
Latex-Portland
Cement Mortar PermaBase
Cement Board
Plywood
Latex-Portland
I-Joists Cement Mortar

Plywood

Cabinet

JOINT REINFORCEMENT: FLOORS & COUNTERS

Trowel bonding material to SUBFLOOR OR BASE: For
completely fill the tapered UNDERLAYMENT: Using a 1/4" Around perimeter of each
flooring applications with 16" square-notched trowel, apply a board, locate fasteners 2" from
recessed board joints and gaps o.c. floor joists, 5/8" tongue
between each panel. On non- setting bed of latex-Portland corners and not less than 3/8"
and groove exterior grade ply- cement mortar (or thin-set mor- from the edges. Fill all joints
tapered joints apply a 6" wide, wood or 3/4" tongue and
approx. 1/16" thick coat of tar) to the subfloor or counter solid with bonding material.
groove exterior grade OSB may base. Immediately laminate On non-tapered joints such as
bonding material over entire be used. For 19.2" o.c. and 24"
joint. For all joints, immediately PermaBase to subfloor or base butt ends, apply a 6" wide,
o.c. floor joists, 3/4" tongue and leaving a 1/8" space between 1/16" thick coat over the entire
embed 2" alkali resistant fiber- groove exterior grade plywood
glass mesh tape fully into boards at all joints and corners. joint. For all joints, immediate-
or OSB must be used. Tile size Leave a 1/4" gap along walls. ly embed 2" fiberglass mesh
applied bonding material and for floors with 24" o.c. floor joists
09 28 00

allow to cure. Same bonding Stagger all joints so that they tape fully into applied bonding
must be 12" x 12" or larger. The material; ensure that tape is
material should be applied to joist and subfloor assembly must do not line up with underlying
corners, control joints, trims and substrate joints. Fasten centered over joint. Apply
meet L/360 as well as the appro- bonding material over fasten-
other accessories. Feather bond- priate code tables for live and PermaBase every 8" o.c.
ing material over fasteners to throughout board field and ers to fully conceal. Remove all
dead loads. excess bonding material and
fully conceal. around all edges while setting
bed mortar is still workable. allow to cure.

PERMABASE® BRAND CEMENT BOARD 149

EXTERIOR APPLICATIONS

APPLICATIONS UNDERLAYMENT: Using a 1/4"

square-notched trowel, apply a
setting bed of latex-Portland
An ideal substrate for exterior cement mortar to the subfloor.
applications such as: Immediately laminate

Tile applications PermaBase to subfloor, leaving a
1/8" space between boards at all

Stucco applications joints and corners. Leave a 1/4"
gap along walls. Stagger all joints

Countertops so they do not line up with

Soffit panels underlying substrate joints.
Fasten PermaBase every 8" o.c.

Sheathing panels throughout board field and
around all edges while setting

Decks bed mortar is still workable.

Outdoor kitchens/grills Around the perimeter of each
board, locate fasteners 2" from
the corners and not less than
INSTALLATION 3/8" from the edges. Fill all joints
solid with bonding material. On
GENERAL: All framing should non-tapered joints such as butt
comply with local building ends, apply a 6" wide, 1/16"
code requirements and be thick coat over the entire joint.
designed to provide support For all joints, immediately
with a maximum allowable embed alkali resistant fiberglass
deflection of L/360 under all mesh tape fully into applied
intended live (including wind) bonding material; ensure that
and dead loads. tape is centered over joint. Apply
Note: Cut or score PermaBase bonding material over fasteners
on rough side of panel. Install to fully conceal. Remove all
tile and tile setting materials in excess bonding material and
accordance with current ANSI allow to cure.
specifications and Tile Council WATERPROOF MEMBRANE:
of America (TCA) guidelines. Trowel apply waterproof mem-
CONTROL JOINTS: For exterior brane to the entire surface of
installations, allow a maximum the PermaBase, following
of 16 lineal feet between control membrane manufacturer’s
joints. (For exterior tile applica- installation instructions in
tions, control joints should be detail.
spaced a maximum of every WALLS & CEILINGS
12'.) A control joint must be
installed but not limited to the WALL FRAMING: Studs
following locations: where should be spaced a maximum
expansion joints occur in the of 16" o.c. Edges/ends of
framing or building (discontinue PermaBase parallel to framing
all cross furring members located should be continuously sup-
behind joint); when boards abut ported. Provide additional
dissimilar materials; where fram- blocking when necessary to
ing material changes; at changes permit proper PermaBase
of building shape or structural attachment. Do not install
system; at each story separation. PermaBase directly over pro- WEATHER BARRIER: While JOINT REINFORCEMENT:
Place control joints at corners of trusions from stud plane such PermaBase is unaffected by Trowel bonding material to
window and door openings, or as heavy brackets or fastener moisture, a water barrier must completely fill the tapered
follow specifications of architect. heads. be installed to protect the cavi- recessed board joints and gaps
Control joint cavity shall not be CEILING FRAMING: The ty. It should be installed between each panel. On non-
filled with coating or other deflection of the complete ceil- according to the manufacturer’s tapered joints apply a 6" wide,
materials. ing assembly due to dead load specifications. approx. 1/16" thick coat of
DECKS (including insulation, PERMABASE CEMENT bonding material over entire
PermaBase, bonding material BOARD: Apply PermaBase joint. For all joints, immediate-
SUBFLOOR: Plywood should and facing material) should not ly embed 4" alkali resistant
be securely glued and fastened with ends and edges closely
exceed L/360. The dead load butted but not forced together. fiberglass mesh tape fully into
to floor joists spaced a maxi- applied to the ceiling frame applied bonding material and
mum of 16" o.c. Subfloor Stagger end joints in successive
should not exceed 10 psf. courses. Drive fasteners into allow to cure. Same bonding
should be sloped at a mini- Ceiling joist or furring channel material should be applied to
mum pitch of 1/4" per foot. The field of cement board first,
should not exceed 16" o.c. working toward ends and corners, control joints, trims or
floor surface should be true to (Edges of PermaBase parallel to other accessories. Feather
plane within 1/8" in 10'. edges. Space fasteners maxi-
framing should be continuous- mum 8" o.c. for walls, 6" o.c. bonding material over fasteners
ly supported.) Provide addition- for ceilings with perimeter fas- to fully conceal.
al blocking when necessary to teners at least 3/8" and less than
permit proper PermaBase 5/8" from ends and edges.
attachment.

150 PERMABASE® BRAND CEMENT BOARD

 09 28 00/NGC

WATER-MANAGED, HIGH-IMPACT RESISTANT WALL SYSTEM

CEMENT BOARD STUCCO WALL SYSTEM
APPLICATIONS
Cement Board Stucco is a Framing
water-managed exterior wall
system designed to provide Acceptable Sheathing
increased high-impact and
weather resistance and
improved dimensional stability Moisture Protection Barrier
where exterior insulation value (By Others)
is not required. For the purpos-
es of meeting structural racking PermaBase® BRAND
or fire code requirements, it is Cement Board
applied over the following
approved sheathings: Exposure
1 or exterior plywood (grade C- Corrosion Resistant
Fasteners
D or better); Exposure 1 OSB;
glass mat gypsum substrate 4" Mesh Tape
meeting ASTM C 1177; or
water resistant core gypsum Base Coat
(ASTM C 1396).
It combines the strength and Reinforcing Mesh
durability of PermaBase Cement
Board with the performance
and beauty of reinforced base Base Coat
coats and textured finishes. All
finishes are available in a limit- Exterior Finish
less color selection and
offer performance enhance-
Flashing Or Starter Track
ment options ranging from
extra mildew resistance to
added flexibility.
Behind the system, a weather-
resistant barrier complying
with ASTM D-226 protects
approved sheathings and other
structural components and
serves as a component to evac-
uate incidental water. Cement
Board Stucco allows you to
enclose and finish a project in
as little as two days, speeding DESIGN OPTIONS:
For exterior finishes applied
occupancy. ADVANTAGES Cement Board Stucco provides direct to PermaBase, rein-
the popular stucco look, forcing mesh must be
USES DURABILITY/STRENGTH: including the attachment of embedded in basecoat.
Moisture resistant, durable special pre-molded shapes and Consult exterior manufac-
For high-impact and weather- PermaBase Cement Board sub- a wide variety of finish texture turer for additional installa-
resistant exterior wall in resi- strates applied over a primary and color options in standard tion requirements.
dential and low-rise commer- sheathing provide extraordi- colors and custom colors.
nary impact and puncture
For conventional Portland
cial applications. Contact exterior coatings Cement plaster systems,
resistance to the system.
manufacturer for color and self-furring metal lath must
WEATHER RESISTANCE: installation instructions. be used over PermaBase
100% Acrylic base coats and and adhered to studs.
finishes repel weather at the
system’s surface. LIMITATIONS
09 28 00

WATER-MANAGED DESIGN:
The water-managed design of
Use is limited to residential
the system provides drainage to and low-rise commercial
the exterior of incidental water applications.
that might enter around or
Thin veneer construction will
through window or door open- tend to reveal planar irregu-
ings and penetrate behind the larities in the frame construc-
cladding in frame construction. tion.

Minor cracking at joints
might become visible in the
finished exterior surface.

PERMABASE® BRAND CEMENT BOARD 151

 FIRE-RATED ASSEMBLIES
UL LISTED PERMABASE® CEMENT BOARD PARTITIONS – STEEL FRAMING
Fire Rating UL Design No. Description
1 hr. V452 1/2" PermaBase applied vertically or horizontally to one side of 3-5/8"
steel studs 16" o.c. 5/8" Fire-Shield Gypsum Board applied vertically to
opposite side. 3" mineral wool insulation in stud cavities.

1 hr. V438 1/2" PermaBase applied vertically or horizontally over 5/8" Fire-Shield
Gypsum Board applied vertically to each side of 3-5/8" steel studs 24"
o.c. PermaBase secured to studs with cement board screws of adequate
length to penetrate studs 3/8" spaced 8" o.c.

1 hr. U420 1/2" PermaBase applied vertically or horizontally over 5/8" Fire-Shield
Gypsum Board applied vertically to each side double row of 1-5/8" steel
studs 24" o.c. spaced 6" apart. PermaBase secured to studs with cement
board screws of adequate length to penetrate studs 3/8" spaced 8" o.c.

1 hr. U425 1/2" PermaBase applied vertically or horizontally over 5/8" Fire-Shield
Load Bearing Gypsum Board applied vertically to each side of 3-1/2", 20 gage steel
studs 24" o.c. PermaBase secured to studs with cement board screws of
adequate length to penetrate studs 3/8" spaced 8" o.c.

2 hr. V452 1/2" PermaBase applied vertically over 1/2" Fire-Shield C Gypsum
Board, applied vertically to one side of 3-5/8" steel studs 16" o.c. 2 lay-
ers 1/2" Fire-Shield C Gypsum Board applied vertically to opposite
side. 3" mineral wool insulation in stud cavities.

2 hr. V438 1/2" PermaBase applied vertically or horizontally over two layers 5/8"
Fire-Shield Gypsum Board applied vertically to each side of 2-1/2" steel
studs 24" o.c. PermaBase secured to studs with cement board screws of
adequate length to penetrate studs 3/8" spaced 8" o.c.

2 hr. U420 1/2" PermaBase applied vertically or horizontally over two layers 5/8"
Fire-Shield Gypsum Board applied vertically to each side double row of
1-5/8" steel studs 24" o.c. spaced 6" apart. PermaBase secured to studs
with cement board screws of adequate length to penetrate studs 3/8"
spaced 8" o.c.

2 hr. U425 1/2" PermaBase applied vertically or horizontally over two layers 5/8"
Load Bearing Fire-Shield Gypsum Board applied vertically to each side of 3-1/2", 20
gauge steel studs 24" o.c. PermaBase secured to studs with cement
board screws of adequate length to penetrate studs 3/8" spaced 8" o.c.

3 hr. V438 1/2" PermaBase applied vertically or horizontally over three layers 5/8"
Fire-Shield Gypsum Board applied vertically to each side of 2-1/2" steel
studs 24" o.c. PermaBase secured to studs with cement board screws of
adequate length to penetrate studs 3/8" spaced 8" o.c.

UL LISTED PERMABASE® CEMENT BOARD PARTITIONS – WOOD FRAMING

Fire Rating UL Design No. Description
1 hr. U305 1/2" PermaBase applied vertically or horizontally over 5/8" Fire-Shield
Gypsum Boardapplied horizontally or vertically to each side of 2x4
wood studs 16" o.c. PermaBase secured to studs with cement board
screws of adequate length to penetrate studs 3/4" spaced 8" o.c.

1 hr. U309 1/2" PermaBase applied vertically or horizontally over 5/8" Fire-Shield
Gypsum Board applied horizontally or vertically to each side of 2x4
wood studs 24" o.c. PermaBase secured to studs with cement board
screws of adequate length to penetrate studs 3/4" spaced 8" o.c.

2 hr. U301 1/2" PermaBase applied vertically over two layers 5/8" Fire-Shield
Gypsum Board, applied either horizontally or vertically to each side of
2x4 wood studs 16" o.c. PermaBase secured to studs with cement
board screws of adequate length to penetrate studs 3/4" spaced 8" o.c.

2 hr. U371 1/2" PermaBase applied vertically over either two layers 5/8" Fire-Shield
Gypsum Board, applied either horizontally or vertically to the interior
side of 2x4 wood studs 16" o.c., or over 5/8" Gypsum Sheathing applied
to exterior side with portland cement stucco, brick veneer, thin brick
finishes. PermaBase secured to studs with cement board screws of
adequate length to penetrate studs 3/4" spaced 8" o.c.

152 PERMABASE® BRAND CEMENT BOARD

 09 28 00/NGC

PERMABASE® BRAND CEMENT BOARD TECHNICAL DATA

TECHNICAL DATA 2-HOUR FIRE RATING – The PHYSICAL PROPERTIES

2-hour wall assembly consists
of 3-5/8" steel studs, 16" o.c. Property Test Method 1/2" PermaBase
FIRE-RATED WALL on one side, base layer of 1/2"
ASSEMBLIES Fire-Shield C wallboard Water Absorption % ASTM C 473 <8
attached vertically with 1" dry- by Weight/24 Hours
PermaBase Cement Board has
been tested and/or approved wall screws 24" o.c. in the field Flexural Strength (psi) ASTM C 947 750
for use in a variety of fire-rated and perimeter and face layer of
wall systems. 1/2" PermaBase attached verti- Fastener Holding ASTM D 1037 90
cally with 1-5/8" cement board (Wet and Dry, lbs.) (0.400" head diameter)
1-HOUR RATING – The 1- screws, 8" o.c. in the field and
hour wall assembly consists of perimeter. Two layers of 1/2" Weight (psf) ASTM C 473 3
3-5/8" steel studs, 16" o.c., one Fire-Shield C wallboard
layer of 1/2" PermaBase applied vertically to the oppo- Freeze/Thaw (cycles) ASTM C 666 100
attached horizontally or verti- per ANSI A118.9 Procedure B
site side, base layer attached
cally with 1-1/4" long cement with 1" drywall screws 24" o.c. Flame Spread/ ASTM E 84 0/0
board screws 8" o.c. in the in the field and perimeter and Smoke Developed
field and perimeter on one side face layer attached with 1-5/8"
and one layer of 5/8" Fire- drywall screws 12" o.c. in the Compressive Strength (psi) ASTM D 2394 2250
Shield® wallboard attached ver- field and perimeter, with 3" (Indentation)
tically on opposite side with thick mineral fiber insulation
joints staggered to those of batts in the stud cavities. All Wind Load ASTM E 330 40
opposite side, with 1-1/4" long (psf, studs 16" o.c.)
joints staggered between face
drywall screws 8" o.c. in the and base layer. UL V452, Thermal “R”/k Value Property of Material 0.2/2.7
field and perimeter with 3" ITS/WHI Report No. J98-
thick mineral fiber insulation 32931. Bending Radius (ft.) Property of Material 5
batts in the stud cavities. UL
V452, ITS/WHI Report No. Standard Method for ASTM C 627 Light
J99-4001. evaluating ceramic Commercial
floor installation system
1-Hour Rating
Falling Ball Impact ASTM D 1037 pass
(12" drop)
1/2" PermaBase
Dry-Set Portland ANSI A118.1 204
Shear Bond Strength

Steel studs (with 3" mineral fiber Cement Mortar

7 days (psi)

insulation)
Latex-Portland ANSI A118.4 241
5/8" Fire-Shield Gypsum Board Cement Mortar

Organic Adhesives ANSI A136.1 159

Type 1

Linear Variation ASTM D 1037 0.05%

(Due to change in
moisture content)

Fungus Resistance ASTM G 21 (No growth)

2-Hour Rating Mold Growth on Surface ASTM D 3273* 10

1/2" PermaBase * When tested by an independent laboratory per ASTM D 3273 ("Standard
Test Method for Resistance to Growth of Mold on the Surface of Interior
Steel studs Coatings in an Environmental Chamber"), PermaBase achieved a panel score
(with 3" mineral fiber insulation) of 10, the highest score possible, indicating no mold growth under the labora-
tory test conditions. The use of PermaBase in actual installations may not
produce the same results as were achieved in controlled laboratory condi-
1/2" Fire-Shield C Gypsum Board tions. No material can be considered "mold proof," nor is it certain that any
material will resist mold indefinitely.

PermaBase meets the following

09 28 00

codes and standards:

2006 International Residential Code
2006 International Building Code
ASTM C 1325
ANSI A118.9
ICC Acceptance Criteria 59 (AC59)
Code Report References
ICBO ES Inc. ER-5731
PermaBase Cement Board
National Evaluation Service Inc.
Report No. NER-578
PermaBase Cement Board

PERMABASE® BRAND CEMENT BOARD 153

 ®
PermaBase Flex BRAND Cement Board
DESCRIPTION

PermaBase Flex® BRAND

Cement Board is a polymer-
modified cement board rein-
forced with an alkali-resistant
fiber mesh ideal for use around
ceilings, beams, columns, arch-
es and archways, walls and
anywhere an evenly curved
surface is required.

APPLICATIONS

Radius wall construction

Exterior and interior columns

Barrel ceilings

Radius shower walls

Radius tub step-ups

Radius archways

Do not use drywall nails, PermaBase Flex makes curved designs easy to

Radius stair construction LIMITATIONS achieve. On this indoor pool ceiling applica-
screws or fiberglass mesh tion, PermaBase Flex is used with a hard coat

Saunas and steamrooms tape. plaster finish.

For convex surfaces,
PermaBase Flex must be
Maximum fastener spacing
FEATURES/BENEFITS applied with the rough sur- should not exceed 8" o.c. for
face and tapered edges wall and 6" o.c. for ceiling

6" (150 mm) minimum exposed. applications.
radius for 90˚ corners.
For concave surfaces,

Bends immediately, easily PermaBase Flex must be
applied with the smooth TECHNICAL DATA
and evenly.
surface exposed.

The only 1/2" lightweight PHYSICAL PROPERTIES

PermaBase Flex Cement
cement board that bends. Property Test Method PermaBase Flex
Board should not be used

Can be bent without water for fire-rated assemblies. Compressive Strength (psi) ASTM D 2394 1022
(Indentation)
saturation or kerf cuts.
Maximum framing spacing Weight (psf) ASTM C 473 3.0

Easy installation, reduces should not exceed 8" o.c. Water Absorption % ASTM C 473 Less than 8
skilled labor costs. and must be designed to by Weight/24 Hours
limit deflection to less than Falling Ball Impact (12" drop) ASTM D 1037 Pass

Easy to cut and install with L/360 under all live and
screws. dead loads.

Can be used for interior
Steel framing must be 20
or exterior applications. gauge or heavier. Sizes/Packaging

Impact resistant.
PermaBase Flex should be
used on curved walls and Thickness: 1/2" (12.7 mm)

Creates uniform curved surfaces. ceilings. For flat walls and Width: 4' (1219 mm)

Unaffected by water or moisture. ceilings refer to PermaBase
Length: 8' (2438 mm)
Cement Board.

Dimensionally stable. Mass: 3.0 lb./ft. (14.6 kg/m)

PermaBase Flex Cement
Packaging: 30 boards per package.
Board is vapor permeable
and unaffected by water but
is not a water barrier.
Consult local building code
for moisture barrier require-
ments.

On exterior installations a
waterproof membrane
must be applied behind
PermaBase Flex Cement
Board.

154 PERMABASE® BRAND CEMENT BOARD

 09 28 00/NGC

INSTALLATION approx. 1/16" thick coat of Interior Installation

bonding material over entire
joint. For all joints, immediate-
INTERIOR APPLICATIONS ly embed 2" alkali-resistant
WALL FRAMING: Studs fiberglass mesh tape fully into
should be spaced a maximum applied bonding material and
of 8" o.c. Edges/ends of allow to cure. Same bonding
PermaBase Flex parallel to material should be applied to
framing should be continuous- corners, control joints, trims or
ly supported. Provide addition- other accessories. Feather
al blocking when necessary to bonding material over fasteners
permit proper PermaBase Flex to fully conceal.
attachment. Do not install EXTERIOR APPLICATIONS
PermaBase Flex directly over
protrusions from stud plane WALL FRAMING: Studs
such as heavy brackets or fas- should be spaced a maximum
tener heads. of 8" o.c. Edges/ends of
PermaBase Flex parallel to
Studs above a shower floor framing should be continuous- Exterior Installation
should be either notched or ly supported. Provide addition-
furred to accommodate the al blocking when necessary to
thickness of the waterproof permit proper PermaBase Flex
membrane or pan. The sur- attachment. Do not install
round opening for a tub or pre- PermaBase Flex directly over
cast shower receptor should protrusions from stud plane
not be more than 1/4" longer such as heavy brackets or fas-
than unit to be installed. tener heads.
CEILING FRAMING: The WEATHER BARRIER: While
deflection of the complete ceil- PermaBase Flex is unaffected
ing assembly due to dead load by moisture, a water barrier
(including insulation, must be installed to protect the
PermaBase Flex, bonding cavity. It should be installed
material and facing material) according to the manufactur-
should not exceed L/360. The er‘s specifications.
dead load applied to the ceil-
ing frame should not exceed CEILING FRAMING: The
10 psf. Ceiling joist or furring deflection of the complete ceil- edges. Ensure PermaBase Flex applications, control joints
channel should not exceed 8" ing assembly due to dead load is tight to framing. should be used a maximum of
o.c. Edges of PermaBase Flex (including insulation, JOINT REINFORCEMENT: every 12'.) A control joint must
parallel to framing should be PermaBase Flex, bonding Trowel bonding material to be installed but not limited to
continuously supported. material and facing material) completely fill the tapered the following locations: where
Provide additional blocking should not exceed L/360. The recessed board joints and gaps expansion joints occur in the
when necessary to permit dead load applied to the ceil- between each panel. On non- framing or building (discontin-
proper PermaBase attachment. ing frame should not exceed tapered joints apply a 6" wide, ue all cross furring members
10 psf. Ceiling joist or furring approx. 1/16" thick coat of located behind joint); when
PERMABASE FLEX CEMENT channel should not exceed 8" boards abut dissimilar materi-
BOARD: Apply PermaBase bonding material over entire
o.c. (Edges of PermaBase Flex joint. For all joints, immediate- als; where framing material
Flex with ends and edges parallel to framing should be changes; at changes at building
closely butted but not forced ly embed 4" alkali-resistant
continuously supported.) fiberglass mesh tape fully into shape or structural system; at
together. Stagger end joints in Provide additional blocking each story separation. Place
successive courses. Drive fas- applied bonding material and
when necessary to permit allow to cure. Same bonding control joints at corners of win-
teners into field of cement proper PermaBase Flex attach- dow and door openings, or fol-
board first, working toward material should be applied to
ment. corners, control joints, trims or low specifications of architect.
ends and edges. Space fasten-
09 28 00

ers maximum 8" o.c. for walls, PERMABASE FLEX CEMENT other accessories. Feather GENERAL: All framing should
6" o.c. for ceilings with perime- BOARD: Apply PermaBase bonding material over fasteners comply with local building
ter fasteners at least 3/8" and Flex with ends and edges to fully conceal. code requirements and be
less than 5/8" from ends and closely butted but not forced CONTROL JOINTS: For interi- designed to provide support
edges. Ensure PermaBase Flex together. Stagger end joints in or installations, allow a maxi- with a maximum allowable
is tight to framing. successive courses. Drive fas- mum of 30 lineal feet between deflection of L/360 under all
teners into field of cement control joints. For exterior intended live (including wind)
JOINT REINFORCEMENT: board first, working toward and dead loads.
Trowel bonding material to installations, allow a maximum
ends and edges. Space fasten- of 16 lineal feet between con-
completely fill the tapered ers maximum 8" o.c. for walls,
recessed board joints and gaps trol joints. (For exterior tile
6" o.c. for ceilings with perime-
between each panel. On non- ter fasteners at least 3/8" and
tapered joints apply a 6" wide, less than 5/8" from ends and
PERMABASE® BRAND CEMENT BOARD 155
 SPECIFICATIONS 2.02 MATERIALS B. Fasteners: LIMITED WARRANTY
A. Cement Board 1.Nails: 1-1/2" long, hot AND REMEDIES
SECTION 09 28 00 dipped galvanized, for use Products manufactured and sold by
1.Backer Board: National Gypsum Company are war-
CEMENT BOARD Cementitious, water-durable with wood framing and com- ranted by National Gypsum
board; surfaced with fiber- plying with Federal Company to its customers to be free
A. This section is written in CSI Specification FF-N-105B,
glass reinforcing mesh on from defects in materials and work-
3-part format and it assumes Type 2, Style 20. manship at the time of shipment. THIS
that the general conditions of front and back; long edges EXPRESS WARRANTY IS THE ONLY
the contract will be AIA wrapped; and complying 2. Screws: PermaBase WARRANTY APPLICABLE TO
A201. This section is propri- with ANSI A118.9 and ASTM Cement Board Hi-Lo SUCH PRODUCTS, AND IS IN
LIEU OF AND EXCLUDES ALL
etary and includes only C 1325 (PermaBase BRAND thread screws (No. 8), OTHER EXPRESS ORAL OR WRIT-
National Gypsum products. Cement Board). wafer head, corrosion- TEN WARRANTIES AND ALL
a. Thickness: 1/2" or 5/8" resistant, 1-1/4" or 1-5/8" IMPLIED WARRANTIES, INCLUD-
PART 1 GENERAL long, for use with wood ING BUT NOT LIMITED TO THE
b.Width: 2' 8", 3', or 4' IMPLIED WARRANTIES OF MER-
1.01 SUMMARY c. Length: 4', 5', 6', or 8' framing and complying CHANTABILITY AND FITNESS FOR
d.Edges: Tapered with ASTM C 1002. A PARTICULAR PURPOSE.
A. Section includes:
e. Density: 72 lbs. per cu. ft. 3.Screws: PermaBase Cement National Gypsum Company will not
1. Cement backerboard for f. Water Absorption: Not be liable for any incidental, indirect
ceramic tile, other interior Board drill point screws (No. or consequential losses, damages or
greater than 8% when tested 8) wafer head, corrosion-resis-
and exterior applications for for 24 hours in accordance
expenses. The customer’s exclusive
walls and ceilings. tant, 1-1/4" or 1-5/8" long, for remedy for any type of claim or
with ASTM C 473. action for defective
use with 20 to 14 ga. steel
2.Underlayment for ceramic 2. Bendable Backer Board:
products will be limited to the replace-
tile installations for interior framing and complying with ment of the products (in the form
Cementitious, water-durable ASTM C 1002. originally shipped) or, at National
and exterior floors. board; surfaced with fiber- Gypsum’s option, to a payment or
3.Substrate for ceramic tile glass reinforcing mesh on C. Joint Treatment: credit not greater than the original
purchase price of the products.
installation for interior and front and back; long edges 1.Tape: Alkali-resistant fiber-
exterior countertops. wrapped; and complying National Gypsum Company will not
glass mesh tape for joint rein- be liable for products claimed to be
1.02 SUBMITTALS with ANSI A118.9 forcement, 2" wide mesh tape defective where the defect resulted
(PermaBase Flex BRAND for interior applications and 4" from causes not within National
A. Product Data: Cement Board). wide mesh tape for exterior Gypsum’s control, or which arose or
Manufacturers’ specifica- applications.
occurred after shipment, including
tions and installation instruc- a. Thickness: 1/2" but not limited to accidents, misuse,
tions for each product speci- b.Width: 4' 2.Bonding Materials: Latex- mishandling, improper installation,
c. Length: 8' contamination or adulteration by
fied. Portland cement mortar or other materials or goods, or abnor-
d.Edges: Tapered Dry-Set (thin-set) mortar, for mal conditions of temperature, mois-
1.03 DELIVERY, STORAGE, e. Density: 72 lbs. per cu. ft. joint treatment and setting ture, dirt or corrosive matter.
AND HANDLING f. Water Absorption: Not face material, complying Any claim that products sold by
A. Packaging and Shipping: greater than 8% when test with ANSI A118.1 or A118.4 National Gypsum Company were
Have materials shipped in ed for 24 hours in accor standards. Type 1 organic defective or other-wise did not con-
dance with ASTM C 473. form to the contract of sale is waived
manufacturer’s original adhesive meeting ANSI unless the customer submits it in writ-
packages showing manufac- 3. Underlayment: A136.1 may be utilized for ing to National Gypsum within thirty
turer’s name and product Cementitious, water- interior use only. (30) days from the date the customer
brand name. discovered or should have discovered
durable board; surfaced PART 3 EXECUTION the defect or nonconformance. No
B. Storage and Protection: with fiberglass reinforcing legal action or proceeding complain-
3.01 INSTALLATION
Store materials inside and mesh on front and back; ing of goods sold by National
long edges wrapped; and A. General: In accordance with Gypsum may be brought by the cus-
protected from damage by tomer more than one year after the date the
the elements. Protect ends, complying with ANSI manufacturer’s recommenda- customer discovered or should have discov-
edges, and faces of cement A118.9 and ASTM C 1325 tions. National Gypsum ered the defect or problem of which it com-
boards from damage. (PermaBase BRAND Cement Company “PermaBase plains.
Board). Cement Board Construction
PART 2 PRODUCTS Guide” and the following
a. Thickness: 1/4"
2.01 MANUFACTURER standard:
b.Width: 3' or 4'
A. National Gypsum Company c. Length: 5' 1. Installation of cementitious
d.Edges: Tapered backer units: ANSI A108.11.
e. Density: 72 lbs. per cu. ft.
f. Water Absorption: Not 3.02 PROTECTION
greater than 8% when test A. Protect cement board installations
ed for 24 hours in accor from damage and deterioration
dance with ASTM C 473. until the date of substantial
completion.

156 PERMABASE® BRAND CEMENT BOARD

12TH EDITION

Index
A

Accessories .................................................................34, 47, 94

Acoustical testing .......................................................................8
Adhesive nail-on of gypsum board ...............................101, 102
Area separation walls ...............................................19, 20, 140
basement .......................................................................143
clips ...............................................................................141
intermediate floors ................................................142, 143
nonload-bearing ............................................................140
solid ..............................................................................140
top floor ................................................................142, 143
ASTM and Federal Specification product numbers ...................3

Banjo taper .............................................................................69

Basecoat plasters .....................................................................35
Bending radii .....................................................................65, 75

CAD drawing information ....................... Inside front cover, 161

Casing bead ................................................................34, 47, 94
Cavity Shaftwall system ........................................................123
for horizontal duct protection .................................26, 137
Ceiling board, high strength ..............................................61, 77
Ceiling panels, Gridstone BRAND ...........................62, 86, 87, 88
Ceilings, steel frame .........................................24-26, 40-42, 99
Ceilings, wood frame ................................................22-24, 101
Cement board .......................................................................145
Cement board, flexible .........................................................154
Cement board stucco wall system ........................................151
Channels, steel ........................................................................93
Chase wall ..............................................................................92
CleanRoom ceiling panels.................................................62, 87
Column fireproofing .........................................................21, 39
Control joints ...................................................8, 47, 49, 71, 94
in ceilings ........................................................................71
Cornerbead .................................................................34, 47, 94
Counters ...............................................................................149
Critical lighting areas ............................................................119
Curved surface, gypsum board over ...................................65, 75

®
INDEX

157
 D board finish guide ..........................................................118
casing ..............................................................................94
Door frames ......................................................................92, 96 cornerbeads .....................................................................94
Double layer gypsum board application ...............................104 environmental conditions ................................................63
Double nailing ......................................................................101 gypsum board ............................................................58, 65
Drywall paper tape, used on joints .........................50, 113, 119 gypsum board products ...................................................58
Drywall primer .............................................................119, 120 limitations ........................................................................63
ProForm BRAND texture products.....................................115 lath/wood framing ...........................................................37
Duct protection ...............................................................26, 137 mechanical application .................................................104
over masonry .................................................................109
E plaster systems .................................................................33
round-edged ....................................................................67
e2XP Extended Exposure Sheathing....................................31, 32 R values............................................................................65
Elevator doors ........................................................128, 129, 136 sag, causes of .................................................................101
Environmental conditions for gypsum board............................63 screw application ..................................................101, 102
Expansion joints...........................................................34, 47, 94 sheathing ..............................................................28-32, 59
Exterior soffit board ...........................................................60, 71 single-layer application ...................................97, 101, 102
E-Z Strip Control joint .......................................................47, 94 storage and handling ........................................................63
texture products .............................................................115
F
H
Face layer, application of gypsum board ..............................104
Fasteners, gypsum board .................................................98, 101 High Flex BRAND Gypsum Board ........................................60, 75
Federal specification designations .............................................7 High-strength ceiling board ..............................................61, 77
Federal specification product standards .....................................3 High-strength ceiling panels ..............................................62, 88
Finish plasters ..........................................................................36 Hi-Abuse BRAND XP Gypsum board ...................................61, 78
Finishing gypsum board ........................................112, 118, 119 Hi-Impact BRAND XP Gypsum board ..................................61, 81
Fireproofing columns and beams ................................21, 22, 39 Hopper ....................................................................................69
Fire-rated assemblies ...........................................................8-26 Horizontal duct protection ..............................................26, 137
Fire-Shield C gypsum board ..............................................58, 66 Horizontal shaftwalls ............................................................137
Fire-Shield plaster base ...........................................................34 H-stud area separation wall ..................................................139
Fire-Shield shaftliner ...............................60, 110, 124, 137, 140
Fire-Shield gypsum board .................................................58, 66 J
Fire testing..................................................................................8
Floating angle, wallboard application ...........................101, 102 J Track............................................................................124, 125
Floors Joint compounds ...................................................................112
steel framed ...............................................................24, 25 ProForm BRAND All Purpose joint compound .................112
wood framed .............................................................22, 23 ProForm BRAND Lite joint compound .............................112
Foam-insulated masonry .......................................................108 ProForm BRAND Multi-Use joint compound ....................112
Foil back gypsum board ..........................................................89 ProForm BRAND Sta-Smooth joint compound ..................113
Furring channels .............................................................99, 106 ProForm BRAND Sta-Smooth Lite joint compound ...........113
for ceilings .......................................................................99 ProForm BRAND Topping joint compound ......................113
splice ...............................................................................99 ProForm BRAND Triple-T compound ...............................113
Z Furring...................................................................53, 108 ProForm BRAND Ultra joint compound ............................112
Joint tapes .............................................................................113
G Joint treatment products ..................................................112, 113

Grid panels ..................................................................62, 86-88 K

GridMarx .................................................................................64
Gridstone BRAND ceiling panels ....................................62, 86-88 Kal-Kore ...................................................................45, 48, 1-54
Guide marks ............................................................................64 joints, treatment of ...........................................................50
Gypsolite plaster .....................................................................35 plaster base ................................................................34, 46
Gypsum Board, see also Gypsum Kal-Kote ............................................................................44, 46
adhesive application .............................................102, 104 basecoat plaster ...............................................................46
application, adhesive nail-on method ...................101, 102 over bonding agent ..........................................................44
application, base layer ............................................97, 102 smooth finish ...................................................................46
application, double layer ...............................................104 system over masonry .......................................................53
application, floating angle method ................................101 textured finish ..................................................................46
application, over curved surface ...............................65, 75 used over Kal-Kore ..........................................................51
application, single layer ..........................................97, 101 Kal-Mesh tape .........................................................................47
board bending ............................................................65, 75 used on joints ..................................................................51
board fasteners ........................................................98, 101
158 NATIONAL GYPSUM INDEX
 L gauging ............................................................................36
Gypsolite plaster ..............................................................35
Laminated partitions .............................................................110 moulding .........................................................................36
Laminating adhesive, used in double-layer gypsum board ....104 painting .....................................................................36, 54
Lamination, gypsum board over masonry ...............................109 systems ............................................................................33
Lath two-way hardwall ............................................................35
ceilings, suspended .........................................................40 veneer ...........................................................12, 44, 50, 52
gypsum/wood framing .....................................................37 Primer/sealer ...........................................................................116
and plaster construction ..................................................34 Product specifications (directory) ..............................................3
solid metal channel stud ..................................................37 ProForm BRAND joint compound ............................................112
types of ............................................................................34 ProForm BRAND Sta-Smooth
used in fireproofing .........................................................39 joint compound .............................................................113
Levels of finish ......................................................................118 gypsum board ............................................................59, 67
Lighting, severe .....................................................................119 HS .................................................................................113
Light steel frame partitions ......................................................90 lite compound ...............................................................113
Limiting heights .......................................................91, 125, 126 ProForm BRAND texture products ............................................115

R
M
Metal framing ..........................................................................93 R-values, gypsum board...........................................................65
Metal lath, see Lath Ready-Mix joint compound ..................................................113
Metal lath, used in fireproofing columns and beams ...............39 Resilient furring channels, see furring channels
Metric capability ......................................................................63 Runner
Mold prevention ......................................................................63 floor and ceiling ..............................................................93
Multi-Flex tape bead .............................................................113 L ......................................................................................94

N S

Nail pops ..............................................................................102 Sagging gypsum board .............................60 (see Soffit), 77, 101
repairing ........................................................................102 Saunas ...................................................................................146
Screw application, of gypsum board .....................................101
Nonload-bearing steel frame partitions ....................................90
Shaft construction
Nonload-bearing walls ............................................................90
caulking .........................................................................136
drywall ..........................................................................123
0 fire ratings ................................................................19, 124
framing.............................................................................136
One-coat plaster
horizontal ......................................................................137
Uni-Kal ................................................................44, 46, 53
sound transmission data ..........................................19, 124
X-KALibur ............................................................44, 46, 53
wall heights allowed ..............................................125-126
Orange Peel finish .................................................................115
gypsum board ................................................................136
Shaftliner ................................................60, 110, 124, 137, 140
P Shaftwalls ........................................................................19, 124
Sheathing, gypsum ......................................................28, 31, 59
Partition system for drywall .....................................................90
Shelf brackets ..........................................................................98
Partitions
Single-layer gypsum board application ...........................97, 101
Durasan ...........................................................................18
Soffit board, exterior ..........................................................60, 71
shaftwalls, stairwells, area separation walls ...............19, 20
Sound-rated assemblies .............................................................8
solid .................................................................................19
Solid laminated partitions .....................................................110
steel framing ...............................................................14-18
Solid-metal lath channel stud ..................................................37
steel framing (load-bearing) ..............................................18
Solid partitions ........................................................................19
veneer plaster ...................................................................12
SoundBreak gypsum board…………………………………… ..84
wood framing (load-bearing) ......................................12-14
Sound reduction
Perfect Spray .........................................................................115
with furring channels .....................................................106
Perma Base BRAND cement board ...........................................145
Spatter finish .........................................................................115
Perma Base Flex BRAND cement board ...................................154
Plaster Spatter knockdown ...............................................................115
accessories ......................................................................34 Splice
basecoat ....................................................................35, 36 furring channel ................................................................99
finish ................................................................................36 stud ..................................................................................99
INDEX

NATIONAL GYPSUM INDEX 159

 Steel frame V
ceilings .......................................................................24-26
floors ..........................................................................24-25 Veneer plaster ...................................................................12, 43
for drywall .......................................................................90 accessories ......................................................................47
partitions ..............................................................12, 14-18 for metal and wood framing ............................................50
pitched roof truss ..............................................................26 over concrete ...................................................................52
Steel studs ...............................................................................90 over masonry ...................................................................53
drywall partition system ...................................................90 systems ............................................................................43
nonload-bearing partitions ..............................................90 thickness ..........................................................................46
Steel track ...............................................................................93
Subfloor, deck .......................................................................150 W
Subfloor, water resistant ........................................................149
Super-White Gauging Plaster ..................................................36 Walls, wood frame ................................................................101
Super-White Moulding Plaster ................................................36 Warranty .........................................................Inside back cover
Suspended ceilings ...........................................................40, 99 Wood framed
metal lath ........................................................................40 floors and ceilings ...................................................22-24, 101
partitions ..............................................................................12
T walls and ceilings ...............................................................101

Tape ..........................................................................47, 51, 113 X

Technical assistance number............................Inside back cover
Testing .....................................................................................2, 8 X-KALibur................................................................44-46, 50-53
Texture products ....................................................................115 XP Gypsum Board....................................................................70
Toggle bolts .............................................................................98
Trademarks ......................................................Inside front cover Z
Triple-T compound ...............................................................113
Two-coat plaster Kal-Kote .......................................................44 Z furring channel ..............................................53, 54, 108, 109
Two-Way Hardwall plaster .....................................................35

U
Underlayment, PermaBase.....................................................149
Uni-Kal BRAND ..........................................................................44
over bonding agent ..........................................................50
applied over Kal-Kore ......................................................50

160 NATIONAL GYPSUM INDEX

 INDEX OF CAD DETAIL DRAWINGS

DETAIL DESCRIPTION PAGE DETAIL DESCRIPTION PAGE

06115A Window Head Jamb – Reversible Stop 29 09250Q Gypsum Board Partition at Floor 96
06115B Window Head Jamb – 3/4" Blind Stop 29 09250R Gypsum Board Partition End 96
09210A 2" Solid Plaster Partition Intersection 38 09250S Gypsum Board Joint 96
09210B 2" Solid Plaster Partition Corner 38 09250T Solid Laminated Partition at Floor 110
09210C 2" Solid Plaster Partition at Ceiling 38 09250U Solid Laminated Partition Corner 110
09210D 2" Solid Plaster Partition with Metal 38 09250V Solid Laminated Partition at Ceiling, 110
Door Jamb Wall or Column
09210E 2" Solid Plaster Partition at Floor 38 09250W Solid Laminated Partition with 111
09210J Metal Lath Three Hour Beam Protection 39 Wood Door Jamb
09210J1 Column UL X402 39 09250X Solid Laminated Partition with 111
Metal Door Jamb
09210K Suspended Metal Lath at Wall 40
(Unrestrained) 09260A Two Hour Fire Rated Shaftwall 128
09210L Suspended Metal Lath at Wall (Restrained) 41 09260AA Shaftwall Fireman Switch & Call Box 130
09210M Suspended Metal Lath Control Joint 40 09260B Shaftwall Typical Start and End 128
09210N Suspended Metal Lath at Wall 41 09260BB Shaftwall Call Box 130
(Unrestrained) 09260C Shaftwall Outside Corner 127
09210O Suspended Metal Lath at Lighting Troffer 40 09260CC Shaftwall with Conduit 130
09210P Furred Metal Lath Ceiling 41 09260D Shaftwall Inside Corner 127
09210Q Suspended Metal Lath 41 09260DD Shaftwall Fireman Switch & Indicator Box 130
09210R Suspended Metal Lath at Beam 41 09260E Shaftwall 7'-0" Elevator Door Framing 128
09215A Veneer Plaster Wood Stud Corner 49 09260EE Shaftwall Chase Wall 134
09215B Veneer Plaster Screw Stud Corner 49 09260F Shaftwall 7'-0" Elevator Door Jamb 128
09215C Veneer Plaster Joint 49 09260FF Shaftwall Chase Wall 134
09215D One Hour Fire Rated Control Joint 49 09260G Shaftwall J Track Framing above 7'-0" 128
09215E Suspended Veneer Plaster Control Joint 49 Elevator Door
09250A Exterior Soffit Board Ventilation 72 09260GG Two Hour Fire Rated Horizontal 137
Duct Protection
09250B Suspended Soffit Board at Wall 72
09260H Shaftwall Elevator Door Head 128
09250CC Joint Where Wall Framing Changes 95
09260HH Two Hour Fire Rated Corridor 137
09250E Partition Intersection 95
Ceiling & Stair Soffit
09250F Gypsum Board Partition Intersection 95
09260I Shaftwall over 7'-0" Elevator Door Framing 129
09250G Gypsum Board Partition Intersection 95
09260II One Hour Fire Rated Corridor Ceiling 137
(Alternate)
& Stair Soffit
09250H Gypsum Board Partition at Concrete Slab 96
09260J Shaftwall Elevator Door Jamb 129
09250I Gypsum Board Partition at Suspended Ceiling 96
09260K Shaftwall J Track Framing above 129
09250J Gypsum Board Partition at Furred Ceiling 96 Elevator Door
09250K Gypsum Board Partition with Wood Door Head 96 09260L Shaftwall Elevator Door Head 129
09250L Gypsum Board Partition with Metal Door Head 96 09260M Shaftwall at Suspended Ceiling 131
09250M Gypsum Board Partition with Control Joint 96 (Unrestrained)
09250N Gypsum Board Partition Wood Door Jamb 96 09260N Shaftwall at Suspended Ceiling (Restrained) 131
09250O Gypsum Board Partition with Metal Door Jamb 96 09260O Shaftwall Mail Chute 131
09250P One Hour Fire Rated Control Joint 96 09260P Shaftwall Cant Strip 131
INDEX

NATIONAL GYPSUM INDEX 161

INDEX OF CAD DETAIL DRAWINGS
QUICK SELECTOR CAD FILES
DETAIL DESCRIPTION PAGE DETAIL DESCRIPTION PAGE

09260Q Shaftwall Parallel to Deck Valleys 132 GOLDA.DWG or .DXF Gypsum, Plaster, Metal Lath 11
09260R Shaftwall Offset from Steel Beam 132 GOLDB.DWG or .DXF Plaster Fireproofing Columns
09260S Stairwell Handrail Support (Screw Fastened) 133 (10WF49 or Heavier) 12
09260T Stairwell Handrail Support (Screw Fastened) 133 GOLDC.DWG or .DXF Plaster Fireproofing Beams
(8WF24 or Heavier) 12
09260U Stairwell Handrail Support (Bolt Fastened) 133
GOLDD.DWG or .DXF Veneer Plaster Partitions/
09260V Shaftwall with Electrical Outlet 133
Wood Framing 12
09260W Shaftwall with Electrical Outlet Support 133
GOLDE.DWG or .DXF Veneer Plaster Partitions/
09260X Stairwell Stair Hanger Rod 134 Steel Framing 12
09260Y Stairwell Stair Hanger Rod 134 GOLDH.DWG or .DXF Gypsum Board Partitions/
09260Z Shaftwall Elevator Electrical Control Layout 130 Wood Framing (Load-Bearing) 12-14
09265G H-Stud Area Separation Wall 142 GOLDJ.DWG or .DXF Gypsum Board Partitions/
09265H H-Stud Area Sep. Wall at Foundation 143 Steel Framing 14-18
09265I H-Stud Area Sep. Wall at Floor Intersection 142 GOLDK.DWG or .DXF Gypsum Board Partitions/
Durasan Prefinished Gypsum 18
09265J H-Stud Area Sep. Wall at Roof Parapet 142
GOLDL.DWG or .DXF Gypsum Board Partitions/Solid 19
09265K H-Stud Area Separation Wall at Roof 142
GOLDM.DWG or .DXF Gypsum Board Partitions/
09265L H-Stud Area Sep. Wall Protruding Ext. Wall 143
Shaftwalls, Stairwells 19-20
09265M H-Stud Area Sep. Wall at Exterior Wall 142
GOLDN.DWG or .DXF Gypsum Board
Column Fireproofing 21-22
GOLDP.DWG or .DXF Gypsum Board Floor/
Ceilings - Steel Framing 24-26
GOLDR.DWG or DXF Gypsum Board Roof/
Ceilings - Steel Framing
(pitched roof truss) 24-26
GOLDS.DWG or .DXF Gypsum Board Floor
Ceilings - Wood Framing 22-24
GOLDP.DWG or DXF Gypsum Board Roof/
Ceilings - Steel Framing
(Steel joists) 26
GOLDT.DWG or .DXF Gypsum Board
Horizontal Duct Protection 26

162 NATIONAL GYPSUM INDEX

1-800 NATIONAL® HAS THE ANSWERS
TO HELP YOU GET ON WITH THE JOB
FIELD REPRESENTATION A VALUABLE RESOURCE
National Gypsum has a vast With years of accumulated
store of knowledge and research, on-the-job experi-
experience to deal with vir- ence and knowledge of
tually any problem or situa- building products and their
tion, and we’ve put that application, National
technical experience in the Gypsum‘s technical service
field with our representa- experts are your resource
tives. Their job is to answer for technical information.
your questions and help you Beyond simply manufactur-
use the right products effec- ing and providing quality
tively, properly and produc- building products,
tively. National Gypsum has
Your National Gypsum Field made a total commitment
Representative brings to to technical assistance
each situation years of actu- for our customers all along
al hands-on experience with the line, at every stage of
gypsum and related prod- a project’s development.
ucts. Each Field DIRECT AND IN PERSON
Representative has also With one phone call from any-
received extensive special- where in the Continental
ized training at the National U.S., Hawaii and Alaska or
Gypsum Research Center in Canada, you have a direct, HOW CAN NATIONAL GYPSUM HELP YOU?
evaluating specifications personal link to National Ask us about specifications, code regulations, product
and meeting building code Gypsum’s database of cur- usage, installation and more:
standards. So, before you rent technical information.
start your next job, talk to For your convenience, ■ Fire and sound rated walls and ceilings
your National Gypsum Field National Gypsum’s toll free ■ Metal stud height information
Representative to determine technical assistance is avail-
the products, the systems, able from 8:00 a.m. through ■ Cavity shaftwalls, mechanical shafts, air ducts and stairwells
the application procedures 4:45 p.m. (E.T.), Monday ■ PermaBase® BRAND cement board
and the specifications need- through Friday. They will get
ed to assure the job is done back to you within 48 hours ■ Durasan® BRAND prefinished vinyl gypsum wall panels
right, right from the start. with a specific and accurate ■ Area separation walls acting as fire barriers for wood
EXPERIENCE ON THE LINE! answer to your gypsum
application and installation frame dwellings
When questions need to be ■ Levels of Gypsum Board Finish
answered immediately, problems. All with a single
National Gypsum’s nation- toll free phone call. ■ Veneer plaster systems, one and two coat
wide technical assistance ■ Gridstone® BRAND vinyl laminated ceiling grid panels
hotline puts a wealth of ■ Lath and plaster construction
experience and computerized
data right at your fingertips. ■ ProForm® BRAND Joint Treatment products
■ ProForm® BRAND spray textures for walls and ceilings
■ Gold Bond® BRAND High Strength ceiling board
■ ProForm® BRAND Sta-Smooth® FS-90 Fire-Shield® fire and smoke
stop compound
■ Gold Bond® BRAND Hi-Abuse® XP Gypsum Board
■ Gold Bond® BRAND Hi-Impact® XP Gypsum Board
■ Gold Bond® BRAND1/4'' High Flex® Gypsum Board
® ■ Manufactured housing products and applications

1-800-NATIONAL
(800) 628-4662

LIMITED WARRANTY AND REMEDIES

Products manufactured and sold by National Gypsum Company are warranted by National Gypsum Company will not be liable for products claimed to be defective
National Gypsum Company to its customers to be free from defects in materials where the defect resulted from causes not within National Gypsum Company’s
and workmanship at the time of shipment. THIS EXPRESS WARRANTY IS THE ONLY control, or which arose or occurred after shipment, including but not limited
WARRANTY APPLICABLE TO SUCH PRODUCTS, AND IS IN LIEU OF AND EXCLUDES ALL OTHER
to accidents, misuse, mishandling, improper installation, contamination or
EXPRESS ORAL OR WRITTEN WARRANTIES AND ALL IMPLIED WARRANTIES, INCLUDING BUT NOT
adulteration by other materials or goods, or abnormal conditions of temperature,
LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
moisture, dirt or corrosive matter.
PURPOSE. Any claim that products sold by National Gypsum Company were defective or
otherwise did not conform to the contract of sale is waived unless the customer
National Gypsum Company will not be liable for any incidental or consequential submits it in writing to National Gypsum Company within thirty (30) days from
losses, damages or expenses. The customer’s exclusive remedy for any type of the date the customer discovered or should have discovered the defect or non-
claim or action for defective products will be limited to the replacement of the conformance. No legal action or proceeding complaining of goods sold by
products (in the form originally shipped) or, at National Gypsum Company’s National Gypsum Company may be brought by the customer more than one
option, to a payment or credit not greater than the original purchase price of year after the date the customer discovered or should have discovered the
the products. defect or problem of which it complains.
PRINTED IN USA 4/08 Copyright 2008 National Gypsum Company
 LIMITED WARRANTY
CUSTOMER SERVICE SALES AREAS AND REMEDIES
Products manufactured and sold by
National Gypsum Company are
warranted by National Gypsum
Company to its customers to be free
from defects in materials and work-
manship at the time of shipment.
THIS EXPRESS WARRANTY IS THE
ONLY WARRANTY APPLICABLE TO
SUCH PRODUCTS, AND IS IN
LIEU OF AND EXCLUDES ALL
OTHER EXPRESS ORAL OR WRIT-
TEN WARRANTIES AND ALL
IMPLIED WARRANTIES, INCLUD-
ING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MER-
CHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE.
National Gypsum Company will not
be liable for any incidental, indirect
or consequential losses, damages or
expenses. The customer’s exclusive
remedy for any type of claim or
action for defective products will be
limited to the replacement of the
products (in the form originally
shipped) or, at National Gypsum’s
option, to a payment or credit not
ⓦ Atlantic Area ⓦ Northeast Area National Accounts greater than the original purchase
price of the products.
Ph: (800) 237-9167 Ph: (800) 253-3161 Ph: (800) 440-1230
National Gypsum Company will not
Fx: (877) 252-0430 Fx: (866) 632-1480 Fx: (866) 622-3590
be liable for products claimed to be
ⓦ Central Area ⓦ Southeast Area Manufactured Housing defective where the defect resulted
Ph: (800) 252-1065 Ph: (800) 548-9394 Ph: (800) 455-3185 from causes not within National
Gypsum’s control, or which arose
Fx: (866) 232-0440 Fx: (866) 732-1990 Fx: (800) 639-1714 or occurred after shipment, includ-
ⓦ Gulf Area ⓦ Southwest Area ing but not limited to accidents,
misuse, mishandling, improper
Ph: (800) 343-4893 Ph: (800) 548-9396
installation, contamination or adul-
Fx: (866) 482-8940 Fx: (866) 792-7520 teration by other materials or
ⓦ Midwest Area ⓦ Western Area goods, or abnormal conditions of
temperature, moisture, dirt or cor-
Ph: (800) 323-1447 Ph: (800) 824-4227 rosive matter.
Fx: (866) 692-8590 Fx: (800) 438-6266 Any claim that products sold by
National Gypsum Company were
defective or otherwise did not con-
form to the contract of sale is
waived unless the customer submits
it in writing to National Gypsum
within thirty (30) days from the
date the customer discovered or
should have discovered the defect
or nonconformance. No legal
action or proceeding complaining
of goods sold by National Gypsum
may be brought by the customer
more than one year after the date
the customer discovered or should
have discovered the defect or prob-
lem of which it complains.

Corporate Headquarters Technical Information

National Gypsum Company Phone: (800) NATIONAL
2001 Rexford Road (800) 628-4662
Charlotte, NC 28211 Fax: (800) FAX-NGC1 ®
Phone: (704) 365-7300 (800) 329-6421
Web: nationalgypsum.com
nationalgypsum.com/espanol

102171 Rev. 4/08