Product Information
Hilti, Inc. (U.S.) 1-800-879-8000 www.us.hilti.com en espaol 1-800-879-5000 Hilti Firestop Systems Guide
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Firestop Block
CFS-BL
Product description
Ready-to-use, intumescent fexible block designed to seal medium
to large size openings
Product features
Integrated Grid-Tech increases Annular Space up to 12
Suitable for re-penetration or new penetrations
Economical to use with short installation times
Easy installation no special tools required
Ideal for use in foors no forming required
One sided wall systems available
Halogen, asbestos and solvent free
Operational immediately after installation
Smoke resistant
Areas of application
Sealing single or multiple penetrations in small to large openings
Temporary or permanent sealing of cables and cable tray
penetrations
Temporary or permanent sealing of insulated and non-insulated
metallic pipes and combustible pipe penetrations
For use with
Walls (UL tested up to max. opening 72" x 36")
Floors (UL tested up to max. opening 72" x 36")
Concrete, porous concrete, masonry and gypsum wall assemblies
Wall assemblies rated up to 4 hours
Floor assemblies rated up to 3 hours
Examples
Completely dust and fber free rooms and places where electrical
installations are frequently used (ie: computer centers, hospitals,
laboratories, etc.)
New buildings in the construction phase and during renovation
Large openings containing multiple penetrations as found in
production bays, warehouses, hospitals etc.
Installation instructions for Firestop Block CFS-BL
FILL, VOID OR CAVITY MATERIALFOR USE IN THROUGH-
PENETRATION FIRESTOP SYSTEMS
SEE UL FIRE RESISTANCE DIRECTORY
66Y7
FM
For Penetration Fire Stops.
Consult the Factory Mutual Research Corporation Approval Guide.
R
FILL, VOID OR CAVITY MATERIALS
CLASSIFIED BY
UNDERWRITERS LABORATORIES, INC.
FOR USE IN TROUGH-PENETRATION
FIRESTOP SYSTEMS
SEE UL FIRE RESISTANCE DIRECTORY
66Y7
Notice
Before handling, read Material Safety Data Sheet and
product label for safe usage and health information.
Instructions below are general guidelines always
refer to the applicable drawing in the UL Fire
Resistance Directory or Hilti Firestop Systems Guide
for complete installation information
Opening
1. Clean the opening. Penetration and penetration
supporting structures must be installed in
compliance with local building and electrical
standards.
Application of Firestop Blocks
2a.If no penetrations are located, build up Firestop
Block CFS-BL, firmly seated, within opening.
2b.If penetrations are located, build up Firestop Block
CFS-BL, firmly seated, while cutting blocks with a
knife to suit the placed penetrations.
3. Finish building up Firestop Blocks until entire
opening is filled.
4. Completely fill cable spaces, gaps between blocks
and pipes, and joints with FS-ONE Firestop Sealant
(as required).
5. For maintenance reasons, a penetration seal could
be permanently marked with an identification plate.
In such a case, mark the identification plate and
fasten it in a visible position next to the seal.
Re-installing cables or other penetrations
Remove or cut the block from the seal.
Install the penetrant and re-lay the block in
compliance with the approval. Fill gaps and spaces
with FS-ONE Firestop Sealant (as required).
Single cables can be run through joints between
blocks or a hole can be drilled through a block using
a sharpened piece of metal pipe or tubing.
Not for use
In wet rooms, outdoors or exposed to the weather
or UV radiation (can be done only after applying an
additional silicone coating, i.e. CP 601S).
Storage
Store only in the original packaging in a location
protected from moisture and direct sunlight
1. Clean opening. 2a. Build up blocks 2b. Cut blocks to
size for penetrations
in place
3. Build up blocks 4. Fill gaps with
FS-ONE, CP 617
or CP 618 putty (as
required).
5. Fasten identifcation
plate in place (If
required)
Technical Data* CFS-BL
Color Red
Application temperature 40 F to 104 F (5 C to 40 C)
Temperature resistance 5 F to 140 F (-15 C to 60 C)
Intumescent activation Approx. 392 F (200 C)
Expansion ratio (unrestricted) Up to 1:3
Surface burning characteristics
(ASTM E84-10b)
Flame Spread Index: 10
Smoke Development Index: 15
Sound transmission classifcation
(ASTM E84-10b)
In Progress
Approvals
California State Fire Marshal - In Progress
Tested in accordance with
UL 1479 ASTM E 814 ASTM E 84
*At 73F (23C) and 50% relative humidity
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