3.5mm Isocheck Underwood - Timber Floor Acoustic Underlay Mat
3.5mm Isocheck Underwood - Timber Floor Acoustic Underlay Mat
- Product Code: A1-3245
- Delivery Time: 3 - 5 days
- Brand: Isomass (Tech. support: 08458383389)
- Model: 10m x 1m - 10m2
- Weight: 12.60kg
Our ratings on 08-11-2024:

4.8 out of 5
3.5mm Isocheck Underwood - Timber Floor Acoustic Underlay Mat
Width: 1000mm
Length: 10000mm
Density: 360kg/m3
Weight/m2: 1.26kg
Weight: 12.6kg
3.5mm Isocheck Underwood is a rubber crumb underlay for use with laminate and wood flooring to provide resilience, durability and support to protect against undue stress in wood and laminate flooring. Isocheck Underwood is manufactured mainly from recycled vehicle tyres bound in a unique latex formulation. The integrated metallised scrim ensures good resistance to moisture transmission, eliminating the need for additional polythene sheeting. Isocheck Underwood is ideal for underfloor heating systems beneath laminate and engineered wood flooring.
- Made mainly from recycled vehicle tyres,
- Suitable for laminate and wood flooring,
- Excellent impact sound insulation properties,
- Ideal for underfloor heating,
- Integral moisture barrier.
- Can be used also on concrete floors, on top of the screed.
- Over existing floorboards,
- On timber joisted floors,
- Refurbishment,
- Conversion projects,
- New build.

- Lay Underwood over the entire level floor with all joints tightly abutted.
- Most t&g or interlocking engineered timber panel floor finishes can be laid directly onto Underwood.
- Finished timber floors should be isolated from the skirting using Isocheck Acoustic Flanking Band.
Brand: Isomass
Model: 500 nos - Free Delivery
Delivery Time: 3 - 4 days
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Model: 27/54 - 75mm - 2m Free Delivery
Delivery Time: 1 - 2 days
75mm Isocheck Expandastrip 27/54 is a permanently elastic open cell Polyurethane foam, used as a seal in joints between pre-cast units, sealing around doors and window frames, or between corrugated roofing panels, roof structures and roof lights ventilation and air conditioning ductwork. It is impre..
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Delivery Time: 3 - 5 days
14mm Isocheck 14C is an overlay platform system, designed for reducing sound transmission, including impact sound transmission and improving acoustic performance of concrete floors. Isocheck 14C is used new build, refurbishment and conversions of concrete floors, able to meet the requirements o..
Guide Price: £18.32
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Brand: Isomass
Model: 2400mm x 600mm - 1.44m2
Delivery Time: 3 - 5 days
18mm Isocheck 18C is an overlay platform system, designed for reducing sound transmission, including impact sound transmission and improving acoustic performance of concrete floors. Isocheck 18C is used new build, refurbishment and conversions of concrete floors, able to meet the requirements o..
Brand: Isomass
Model: 75mm x 5mm x 25m - Free Delivery
Delivery Time: 1 - 2 days
75mm x 5mm x 25m Isocheck Acoustic Isolation Strip is utilised to improve acoustic insulation and reduce impact sound transmission in masonry, steel, and timber partition and separating walls. These strips are crafted from cross-linked Isopoli foam and feature an adhesive backing, ensuring they..
£55.82
£66.98 inc VAT
Brand: Isomass
Model: 600x2400mm - 1.44m2
Delivery Time: 3 - 5 days
Isocheck 32T is an direct to joists floor system, designed for reducing sound transmission and improving acoustic and thermal performance of traditional timber joisted floors. The system is used in new build, refurbishment and conversion applications (especially if new resilient bar ceilin..
Guide Price: £47.27
£56.72 inc VAT
