Custom Audio Designs Ltd
Independent Acoustics and Noise Control Expertise

Floating floors | Acoustic Flooring | Floor Isolation | Resilient Sheet

IsoScreed-Rubber Acoustic Resilient layerIsoScreed-RubberIsoScreed-RubberIsoScreed-RubberIsoScreed-Rubber


  • Impact reduction under screed.
  • Suitable for Concrete floors.
  • Exceeds New Part E Building Regs.
  • Suitable with underfloor heating.


  • Provides significant reduction in impact noise and vibration.
  • Will not collapse out even under high point loads.
  • Easy to install.
  • Resistant to ageing and deformation.
  • Minimal creep even under high loads.
  • Excellent thermal conductivity.
  • Low cost.
  • Does not significantly increase the floor level.


IsoScreed-Rubber is a polyurethane bound mixture of selected rubber fibres and is ideal for use under screeds as a resilient layer. Available in 3mm and 6mm thicknesses the product has a high resistance to compressive loads and remains outstandingly eleastic.

It has high acoustic benefits for impact and airborne noise and used extensively in new build and refurbishment construction projects where Pre-Completion testing is preferred to Robust Details.

Acoustic Resilient layer for under screed isolation UK

ISOSCREED-Rubber significantly reduces impact noise and vibration under floor screed as well as providing a degree of airborne and thermal insulation.

Impact sound reduction Δ 21dB under a 50mm thick screed.

Field Sound Testing on the floor buildup below gave the following results:
DnTw+Ctr= 49dB
LnTw= 48dB The floor consisted of:

  • sand and cement screed
  • 6mm Isoscreed R6
  • Byson beam and block
  • 100mm void with acoustic insulation
  • MF suspended ceiling on acoustic hangers
  • 12.5mm plasterboard

A high load version is also available (IsoScreed-R10HL) for the most demanding applications. Contact our technical department for further information.

PLEASE NOTE: Failure to follow the exact wall junction detail will cause an acoustic failure !


Roll Size 3mm-

20m x 1m

Roll Size 6mm and 10mm-

10m x 1.25m


3mm, 6mm and 10mm(HL)

Tensile Strength-

Approx. 0.7 MPa (DIN 53571)

Tear Resistance-

Approx. 75% (DIN 53571)


Ca. 700Kg/M³

Service Temperature

-30°C - +80°C;


Class B2

Impact Reduction-

Δ 21dB under a 50mm screed

All information contained in these details is given in good faith but without warranty.
Custom Audio Designs reserves the right to alter the specifications of any product without notice.
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