Isomass Isocheck Impact Mat Acoustic Floor Insulation
Composite Acoustic Mat for Timber Floor Sound Insulation
The Isomass Isocheck Impact Mat range is designed to improve impact and airborne sound insulation through timber floors and staircases. It is commonly used in refurbishment, conversion and listed-building projects where a low-height acoustic floor upgrade is required with minimal structural change.
The range includes Impact Mat 100, Impact Mat 200 and Impact Mat 300, giving you different levels of acoustic performance depending on the floor build-up, available height and project requirements.
Impact Mat 200 is an Isofiba / barrier mat composite supplied as a 1200mm x 1000mm sheet. It can be installed as a single layer or double layer over floorboards or concrete decks. It can also be used draped over joists and beneath floorboards in suitable timber floor constructions.
For best results, install as part of a complete acoustic floor system, including perimeter isolation, correct joint treatment, suitable floor finishes and control of flanking noise paths.
Key features
- Helps reduce impact noise through timber floors and staircases.
- Also improves airborne sound insulation when used as part of a full floor build-up.
- Suitable for refurbishments, conversions and listed-building upgrades.
- Can be used as a single or double layer depending on the acoustic requirement.
- Low-build-up acoustic solution compared with thicker overlay boards.
- Suitable beneath many timber, laminate and carpet floor finishes, subject to the full specification.
- Use with acoustic flanking strips to reduce perimeter vibration transfer.
Technical specifications
| Variant | Format | Size | Thickness | Weight | Main use |
|---|---|---|---|---|---|
| Impact Mat 100 | Roll | 1.2m x 12.5m | 6.5mm | 2.6kg/m² | Lightweight impact improvement |
| Impact Mat 200 | Sheet | 1200mm x 1000mm | 8mm | 8.0kg/m² | Higher impact and airborne improvement |
| Impact Mat 300 | Sheet | 1200mm x 1000mm | 12mm | 12.5kg/m² | Higher-mass acoustic floor upgrade |
Isomass states that Impact Mat 200 is designed to reduce impact and airborne sound transmission through timber floors, with product data showing 1200mm x 1000mm x 8mm, Isofiba / barrier composite, and 8.0kg/m² weight.
Installation notes
Lay Isocheck Impact Mat over a clean, level and dry subfloor with joints butted together. Joints should be taped, and the floor finish should be isolated from walls and skirtings where required. For timber floor finishes, use suitable perimeter flanking strips to reduce vibration transfer through surrounding walls.
For uneven floorboards, install a suitable plywood or hardboard layer before laying the mat. Avoid mechanical fixings through the acoustic layer where possible, as this can reduce the acoustic benefit.
FAQ:
What is Isocheck Impact Mat used for?
Isocheck Impact Mat is used to reduce impact noise and improve acoustic performance in timber floor and staircase constructions. It is suitable for refurbishment, conversion and listed-building projects where floor height needs to be kept low.
What is the difference between Impact Mat 100, 200 and 300?
Impact Mat 100 is a lighter roll product. Impact Mat 200 is an 8mm Isofiba / barrier sheet for stronger acoustic improvement. Impact Mat 300 is a heavier 12mm sheet for higher-performance floor upgrades.
Can Impact Mat 200 be used as a single layer?
Yes. Impact Mat 200 can be used as a single layer or double layer depending on the required acoustic performance and the full floor construction.
Do I need flanking strips?
Yes, perimeter isolation is strongly recommended. Flanking strips help stop vibration travelling from the floor finish into walls and skirtings, which can reduce the effectiveness of the acoustic floor build-up.
Can timber or laminate flooring go directly over the mat?
Some timber and laminate finishes can be installed over the mat, but the correct interlayer and floor finish specification should be confirmed before installation.
