InstaCoustic InstaLay 65 is a high performance resilient membrane designed to reduce the transmission of impact sound through floor screeds.
|InstaLay 65 – Under Screed||InstaLay 65 – Over Screed|
|STRUCTURAL FLOOR – Concrete||STRUCTURAL FLOOR – Concrete|
|Test No. F115||Test No. F110|
|AIRBORNE – 55dB DnTw + Ctr||AIRBORNE – N/A|
|IMPACT – 47dB LnTw||IMPACT – 40dB LnTw|
|Floor system was tested with an appropriate ceiling system||Floor system was tested with an appropriate ceiling system|
|Please consult InstaCoustic before specifying an acoustic system. The structure has a bearing on the overall performance.||Please consult InstaCoustic before specifying an acoustic system. The structure has a bearing on the overall performance.|
Some text about components
InstaLay 65 Edge Strip
Optional Waterproof Membrane
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Please note that it is critical that the perimeter detail is applied consistently throughout the construction process. Failure to isolate the perimeter edge of the screed will create points of contact with the structure that will result in flanking transmission of sound. The wall lining and the skirting board also require isolation from the screed to avoid flanking sound transmission. Failure to follow this detail could compromise the sound insulation performance.
Under floor heating systems can be applied within the screed application. However, it is critical that no fixings of any sort penetrate the resilient layer or create any direct points of contact between the screed and the structural floor. If the under floor heating system has an insulation layer, on which the heating pipes are installed, this can be laid directly on top of the resilient layer but not penetrate this layer.
Consult the underfloor heating manufacturer to check the minimum screed depth to cover the heating system.