InstaLay 65 Under Screed Resilient Layer (E-FC-13)

InstaCoustic InstaLay 65 is a high performance resilient membrane designed to reduce the transmission of impact sound through floor screeds.

Applications

  • Robust Detail E-FC-13
  • Pre-Completion Testing
  • New Build
  • Refurbishment / Material Change of Use
  • Concrete Floor - Level
  • Over Screed / Soft Floor Covering
  • Under Screed
  • Restricted Floor Height

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Acoustic Performance

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.

Benefits

  • Exceeds Building Regulations performance standards
  • Significantly reduces impact sound transmission
  • Longevity of performance due to removing possible creep or collapse under high loads
  • High stability - creates a very stable resilient membrane which reduces the risk of settlement and prevents screed failure
  • Strong and durable layer that is resistant to damage before the screed is laid, preventing points of contact with the structure leading to sound test failures
  • Suitable for use with underfloor heating

Components

  • InstaLay 65
  • InstaLay 65 Edge Strip
  • Jointing Tape
  • Optional Waterproof Membrane

System Detail

Please click on an image to view product details

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.

Underfloor Heating

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..