Hush FFR 5mm Resilient Acoustic Underlay 10m x 1.25m
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Product Information
Cushion footstep noise beneath your floor finish with Hush FFR 5mm Resilient Acoustic Underlay. Made from recycled rubber granules and fibres, it provides a thin, resilient layer beneath floor finishes on timber or concrete bases.
Each 10m x 1.25m roll covers 12.5m². Hush FFR 5mm combines a modest floor build-up with a resilient rubber layer for new builds and refurbishments.
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Footfall sound insulation: 21 dB at 5mm (DIN EN ISO 140-8) |
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Thickness: 5mm |
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Roll size: 10m x 1.25m |
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Area: 12.5m² per roll |
Where to use Hush FFR 5mm
Use beneath floating laminate or engineered timber flooring, or beneath carpet. The fine rubber granulate is bonded with a PUR elastomer to combine resilience with resistance to compression.
For tiled finishes, Hush’s guidance specifies FFR beneath plywood and an anti-fracture membrane with flexible adhesive. Plan these extra layers into your floor height.
Hush also specifies a 5mm FFR resilient layer beneath its Therm 18 dry screed underfloor heating board. Use the prescribed Therm 18 arrangement for this application.
Acoustic performance for the 5mm underlay
Hush publishes 21 dB footfall sound insulation at 5mm under DIN EN ISO 140-8. This describes impact sound improvement from footfall; it is not an airborne sound rating.
Planning your installation
- Use Hush FFR 5mm as the resilient layer above a timber or concrete floor.
- Floating laminate and engineered timber can be laid directly over the underlay, following the floor-finish supplier’s fitting requirements.
- For stone or tiled finishes, include the specified plywood, anti-fracture membrane and flexible adhesive.
Hush supplies detailed FFR fitting instructions on request. Select the fixing or bonding method for your chosen floor finish before installation.
How many do I need?
Add your chosen allowance for joints and cuts to the room area, divide by 12.5m² and round up to whole rolls.
For example, a 30m² room with an optional 10% allowance needs 30 × 1.10 ÷ 12.5 = 2.64, rounded up to 3 rolls.
For help with the right quantity for your project, call our technical team on 01928 571 856 or email hello@soundinsulationstore.co.uk
