Acoustic Matt

 

Construction

Sika Acoustic Matt

Construction

Sika Acoustic Matt

Sound Insulating System for Timber Flooring

Description The Sika Acoustic Matt system consists of the sound dampening one

component adhesive SikaBond-T55 (J) and the Sika Acoustic Rubber Matt.

Uses The Sika Acoustic Matt 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 • Reduced noise and vibration transmission.

• Low floor zone thickness.

• Remains permanently flexible.

• Thin construction with high performance.

• Simple and easy to install.

• Available in a variety of sheets sizes strips or pads.

• Resists ageing and deformation.

• Consistent density and thickness for maximum performance

• Use of Australian recycled rubbers.

Instructions for Use

Surface Preparation 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-T55 (J) to be applied without a

primer.

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-

T55 (J).

When the moisture content of the concrete is greater than 10% EpoCem

(Sikafloor-81 or Sikagard-720) should be used as a temporary moisture

barrier. Sika Primer MB should then be used as a prime coat before applying

SikaBond-T55 (J).

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.

Application Sausage: Place the sausage in the application gun and snip off the end. Cut

the tip off the nozzle to suit the application and apply the adhesive with

suitable hand or compressed air gun.

Pail: Remove lid off pail and cut open foil liner. Once opened the entire

contents of the pail should be used within a short period of time.

Do not apply SikaBond-T55 (J) at temperatures below 5°C or above 35°C.

The optimum temperature for substrate and adhesive is between 15°C and

25°C.

The adhesive should be applied over a large surface areas with a notched

spreader (notch depth approx. 6mm to achieve 4mm head height). The

coverage will vary from 800ml to 1000ml per m². Avoid air entrapment when

making the bond or filling joints.

 

Construction

Construction Sika Acoustic Matt

 

 

Application (continued) Apply firm pressure when bringing the Acoustic Matt in contact with the

SikaBond T55 (J). After twelve hours of application of the Acoustic Matt

screed another layer of Sikabond T55 (J) to the Matt and apply timber

planks. Keep the components under pressure for at least 3 hours until the

adhesive has partially cured.

For application details of timber flooring systems contact the timber

manufacturer.

Technical Data (Typical)

1. Sika Acoustic Matt

Type Prefabricated medium density rubber underlay designed for noise and

vibration insulation and resilience.

Colour Black

Density 600 – 850 kg/m3

Thickness 3 or 5 mm

Dimensions 3 mm – 1.2 m x 15 m roll

5 mm – 1 m x 1 m

2. SikaBond T55 (J)

Type One part polyurethane

Colour Beige

Density 1.35 kg/litre

Tack Free Time Approximately 90 minutes (at 23°C & 50% r.h)

Rate of Cure 3 mm in 24 hours (at 23°C & 50% r.h)

Shore A 38 (DIN 53505)

Tensile Strength >1.5 MPA (DIN 53504)

Tensile Shear Strength >1.0 MPA (DIN 281)

Elongation at Break >400% (DIN 53504)

Service Temperature -40°C & +80°C

Packaging 600 ml sausage 2 kg sausage 16 kg pail

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-T55 (J) it must be allowed to

moisture cure (i.e. either from the substance or the air).

• SikaBond-T55 (J) 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

information.

• 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.

Important Notification The information and in particular the recommendations relating to the application

and end-use of Sika’s products are given in good faith based on Sika’s 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

INFORMATION.