Sound Insulating System for Timber Flooring
Description The Sika AcouBond System consists of the sound dampening one
component adhesive. SikaBond-T53 and the SikaLayer-05 foam mat.
Uses The Sika AcouBond System is used to bond timber floors in residential office
and industrial buildings. The system provides a sound dampening effect
improving the acoustic insulation of a room.
Advantages Footfall sound can be reduced by up to 18dB.
Excellent sound dampening qualities.
Can be walked on during installation.
Easy and safe to install.
Good adhesion to most substrates.
Approvals/Standards Sound Transmission Class 60: RALTM TL01 221 (USA)
Impact Insulation Class 57: RALTM INOI II (USA)
Reduction of Impact Sound ?LW 18dB (NF EN ISO 717/2): Report
Reduction of Impact Noise ?LW 3dB (NF EN ISO 717/2): Report
Storage and Shelf Life Stored in the original sealed container at a temperature range between 0°C
and 25°C this material will keep for a minimum of nine (9) months.
Instructions for Use
All surfaces must be clean dry sound and free from dust and loose particles.
Paint laitance and other poorly adhering particles must be removed by
grinding. Standard construction rules or the timber manufacturers or the
timber manufacturers instructions regarding moisture content of concrete
cement screeds or wooden substrates must be observed.
Concrete/cement screed substrate: No preparation is necessary on a dry
dense wearable substrate. For other substrate conditions the floor must be
grinded and thoroughly cleaned with an industrial vacuum cleaner.
(Important: Pre-Trials absolutely necessary)
Other substrates: In case of flowable screeds and other unknown substrates
we recommend that you consult your local Sika Technical Representative.
Priming The moisture content should be measured in accordance with the Floor
Coverings Standard AS1884-1985. A method of testing concrete moisture is
given in the appendix of this standard.
When the moisture content of the concrete is found to be below 5.5% the
substrate is considered suitable for SikaBond-T53 to be applied without a
When the moisture content of the concrete is found to be between 5.5% and
10% Sika Primer MB must be used as a primer before applying SikaBond-
When the moisture content of the concrete is greater than 10% EpoCem
(Sikafloor-81or Sikagard-720) should be used as a temporary moisture
barrier. Sika Primer MB should then be used as a prime coat before applying
When priming with Sika Primer MB a continuous visible film of cured epoxy
must be observed on the surface. The application rate will depend on the
porosity of the substrate.
Revised October 2004
Application 1. Place SikaLayer 05 mat parallel to the direction to which the timber is
being laid. Ensure that the foam mats are placed close to each other
however they must not overlap.
2. Apply the SikaBond-T53 adhesive with the application gun into all cut
outs in the mat. Nozzle must be held vertical to the substrate.
Important: Adhesive bead must be 10 x 8 mm. Adhesive may not be
placed into the mat between the cut outs.
3. Position timber elements and firmly press them into the adhesive until
they lay tight on the SikaLayer-05. The elements can then be joined
together with a hammer and impact block. For gaps along the walls
please follow the timber manufacturers instructions.
Revised October 2004
Technical Data (Typical)
1. Sika Layer-05
Type High quality polyethylene foam mat with symmetrically place cut outs
Heat Conductivity 0.042 W/mk
Footfall Sound Reduction Up to 18dB
Dimensions 1500mm wide
Type One part polyurethane
Density 1.15 1.2kg/litre
Tack Free Time Approximately 50 minutes (at 23°C & 50% r.h)
Open Time Approximately 45 minutes
Rate of Cure 4mm in 24 hours (at 23°C & 50% r.h)
Shore A 40 (DIN 53505)
Tensile Strength 1.8 MPA (DIN 53504)
Tensile Shear Strength 1.2 MPA (DIN 281)
Elongation at Break >500% (DIN 53504)
Service Temperature Between -40°C & +80°C constantly temporarily up to +90°C
Packaging 600ml sausage 20 sausages per box
Consumption One roll of Sika® Layer-05 requires one carton of 20x600mL SikaBond®-
Important Notes Floors can be walked on 24 hours after installation (no traffic or heavy
concentrated loads). The floor is fully serviceable after 48 hours.
For proper curing of the SikaBond-T53 it must be allowed to moisture
cure (i.e. either from the substance or the air).
SikaBond-T53 should not be used on polyethylene polypropylene
Teflon & other plasticised synthetic materials. (Trials should be
conducted if in doubt).
Consult Sika Primer MB Technical Data Sheet for detailed priming
Timber flooring systems should be allowed to acclimatise to the
environment it is to be placed in to allow for expansion and shrinkage
problems that may occur. Refer to the timber manufacturers installation
and design procedures.
The Sika Acoubond System is not suitable for thin gauge timber
Revised October 2004
Sika Australia Pty Limited www.sika.com.au
ABN 12 001 342 329 Tel: 1300 22 33 48
Important Notification The information and in particular the recommendations relating to the
application and end-use of Sikas products are given in good faith based
on Sikas current knowledge and experience of the products when
properly stored handled and applied under normal conditions. In
practice the differences in materials substrates and actual site conditions
are such that no warranty in respect of merchantability or of fitness for a
particular purpose nor any liability arising out of any legal relationship
whatsoever can be inferred either from this information or from any
written recommendations or from any other advice offered. The
proprietary rights of third parties must be observed. All orders are
accepted subject of our terms and conditions of sale. Users should
always refer to the most recent issue of the Technical Data Sheet for the
product concerned copies of which will be supplied on request.
PLEASE CONSULT OUR TECHNICAL DEPARTMENT FOR FURTHER