SOUNDLAG 4525C
acoustic pipe lagging
acoustic
treatment for
noisy pipes
Acoustic treatment for noisy pipes
The trend towards high-density living environments and lightweight building
construction over the last decade has required an improvement in the control of
noise from waste pipes and general plumbing. Soundlag 4525C, carrying a ten
year warranty, is the choice for many leading acoustic consultants, architects
and consulting engineers as its quality assured consistent performance
guarantees quieter pipes.
Beware of imitations! Soundlag® products are embossed with the
‘Soundlag’ name.
Introduction
Soundlag 4525C is a pipe wrap comprising of 5.0 kg/flexible acoustic barrier bonded to 25mm thick flexible convoluted
foam. The function of the foam is to provide acoustic decoupling between the pipe’s noise energy and the 5kg flexible
acoustic barrier external wrap, resulting in superior performance. The external face of the barrier is bonded to an aluminum
foil providing a fire resistant covering.
acoustic treatment for noisy pipes
Solution/application
Soundlag 4525C has been developed as an easy to use acoustic treatment which reduces noise breakout from
pipes. The unique flexibility of the polymer-based noise barrier provides superior performance and allows even the smallest
pipes to be lagged effectively. It’s independently tested in laboratory conditions and on site to give proven consistent
performance. Leading consultants specify Soundlag 4525C with confidence.
Low maintenance with a long service life, the aluminium foil facing provides a robust lifetime surface finish, ensuring
protection from damage, and improves fire resistance.
n Easiest pipelag product on the market to cut, wrap & install
n Most widely specified by leading acoustic & EMP (electrical, mechanical & plumbing) consultants
n Highly flexible, allowing it to conform to the smallest dia. Pipes & bends (has no memory)
n No odour & non irritant
n No solvents or adhesives used during manufacture
n Complies to building standard regulations for low VOC ommission
n Ten year warranty
n Available world wide
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Product construction
Foil facing
Soundlag 4525C uses a strong aluminium foil facing, giving improved fire resistance and increased mechanical
strength.
Noise barrier (5 kg/m²)
The Soundlag acoustic barrier reduces noise through it’s unique construction. The specialist fillers create a heavy
flexible mass barrier, maximising noise reduction. Soundlag’s uniquely flexible and naturally inert nature allows effective,
easy installation, essential in achieving a noise-tight seal.
Convoluted foam
The foam provides a decoupling layer which breaks the vibration path allowing the noise barrier to continue to perform
in a limp non-constrained manner. Soundlag has enough inherent flexibility to allow convoluted foam to be used,
improving fit-out quality on traps and joins.
The polyether foam used in the manufacture of Soundlag products is nonfibrous, will withstand the effects of moisture
(hydrolysis resistant), displays excellent acoustic characteristics and has a long serviceable life.
Construction options
Extensive research has enabled Soundlag 4525C to maximise results while remaining cost effective. However, if extra
barrier weights or a variation in foam thickness is required, consult your local Pyrotek representative for special orders.
Soundlag dBX now available on request (PVC free).
Pre cut pieces for bends, junctions and floor waste gullies can be produced from
templates available on request.
System design considerations
When designing a system using Soundlag 4525C, penetrations through ceilings must be taken into account to
ensure effective sound reduction especially from down lights, air conditioning ducting, access hatches and where
lightweight ceilings such as mineral fibre tiles are used.
acoustic treatment for noisy pipes
Did you know?
Manufacturers of HDPE and HDPP heavy density acoustic pipes also recommend acoustically lagging pipes with
products such as 4525C to comply with building codes.
Installation
Soundlag 4525C is easily installed using Soundtape, a high quality, self adhesive, reinforced foil tape. To
ensure a high quality fit-out, we suggest placing 3 circumferencial wraps of Soundtape every 300 - 400mm, ie 3
wraps per 1m of pipe.
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Acoustic performance
Working with acoustic consultants and test facilities, Pyrotek has designed and tested systems that achieve a
high level of noise reduction for all plumbing and hydraulic situations.
Soundlag 4525C is tested in field and independent laboratories to international standards.
Properties
Standard roll size 1350mm x 5000mm 675 x 5000mm
(nominal ±3%) (nominal ±3%)
Roll weight 34kg - 36kg 17kg - 19kg
(nominal ±5%) (nominal ±5%)
Operating temperature (maximum continuous) 800C
Operating temperature (maximum intermittent) 1000C
Ignitability 0
Spread of flame 0
Flammability - AS 1530 Part 3 1999
Heat evolved 0
Smoke developed 0-1
Low VOC less than the recognised threshold of
Green Star - ASTM D5116
0.5mg/m2/hr
Acoustic testing
Insertion loss: (NAL ATF 750B Report) 25 dB (A) (1/3 octave band 100Hz to10kHz)
Insertion loss (system): (TA 129-D7F03 Report) Greater than RW45
Free hanging (ASTM E-90-90) RW28
acoustic treatment for noisy pipes
Transmission loss (AS1276) RW27
AAAC 6 star rated system PKA - A078 Less than 27dBA
AUSTRALIAN BUILDING CODE REQUIREMENTS
Section F5.6 of the current Australian Building Code (2005) requires that:
“If a duct, soil, waste or water supply pipe, including a duct or pipe that is located in a wall or floor cavity, serves
or passes through more than one sole-occupancy unit, the duct or pipe must be separated from the rooms of any
sole-occupancy unit by construction with an RW + Ctr (airborne) not less than -
(i) 40 if the adjacent room is a habitable room (other than a kitchen); or (ii) 25 if the adjacent room is a kitchen or
non-habitable room.”
Soundlag 4525C
R1.8 insulation
Soundlag 4525C
10mm plasterboard 10mm plasterboard
RW30 system and RW25+Ctr system RW45 system RW40+Ctr system
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Fixing and cutting
Nominal inside diameter Outside diameter Actual cut length Coverage
1.35 x 5m roll
32 36 260 25.5
40 43 280 23
50 56 320 20
65 69 360 17.5
80 83 405 16
100 110 500 13.5
150 160 650 9.5
225 250 930 7
300 316 1135 5
375 401 1400 4
This is an indicative calculation based on a minimal overlap
Soundlag 4525C is easily cut with a knife or scissors to size, minimising wastage. Wrap soundlag 4525C around
the pipe and then use high quality aluminium tape to join the product together. Pyrotek recommends an overlap at
all joins to eliminate potential flaking noise.
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AUSTRALIA
1300 928 322
(1300 WAVEBAR)
+61(0)2 8868 2088
CHINA
+86(0)755 8601 6449
HONG KONG
+852 2548 4443
CZECH REPUBLIC
+420 516 527 195
+420 725 373 966
INDIA
+91 9819 330 499
+91 2137 668 000
INDONESIA
+62 81 1889 1917
NEW ZEALAND
0800 226 878 427
(0800 ACOUSTICS)
+64(0)9 272 2056
TAIWAN
+886 6 313 1267
TURKEY
+90 212 230 3033
UAE - DUBAI
+971(50)624 9254
UNITED KINGDOM
+44(0)1908 561155
USA
+1 509 991 8548
+1 856 816 0194
Caveats: Specifications are subject to change without notice. The data in this document are typical of average values based on tests by independent
laboratories or by the manufacturer and are indicative only. Materials must be tested under intended service conditions to determine their suitability
for purpose. The conclusions drawn from acoustic test results are as interpreted by qualified independent testing authorities. Nothing here releases
the purchaser/user from responsibility to determine the suitability of the product for their project needs. Always seek the opinion of your acoustic or
mechanical engineer on data presented by the manufacturer. Due to the wide variety of individual projects, Pyrotek NC is not responsible for differing
outcomes from using their products. Pyrotek disclaims any liability for damages or consequential loss as a result of reliance solely on the information
presented. No warranty is made that the use of this information or of the products, processes or equipment to which this Information Page refers will
not infringe any third party’s patents or rights. DISCLAIMER: This document is covered by Pyrotek standard Disclaimer, Warranty and © Copyright
clauses. See www.pyroteknc.com/disclaimer.
Pyrotek | Soundlag 4525C| 25.10.2012
