Knauf Insulation OmniFit Slab 35 1200mm x 400mm x 100mm (2.88m2 pack)
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Knauf Insulation OmniFit Slab 35 1200mm x 400mm x 100mm (2.88m2 pack)
(Approx. 3-5 working days)


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Knauf Insulation OmniFit Slab 35 is a glass mineral wool slab designed for multiple applications across timber and steel frame properties. It functions as both a thermal and acoustic insulator, offering a thermal conductivity of 0.035W/mK and exceeding the acoustic requirements of Part E of the Building Regulations. The slab is friction-fitted between common stud centres, which provides a tight seal to prevent air movement and minimise heat loss without the need for cutting.
Produced using Knauf ECOSE Technology with a bio-based binder, this slab provides a non-combustible solution with a Euroclass A1 reaction to fire classification. Its versatile nature allows it to be used in pitched roofs, internal walls, internal floors, and ground floors, reducing the need to use multiple specific products for different areas.
- Friction fits between 400mm studs to prevent air movement and heat loss.
- Provides a thermal conductivity of 0.035W/mK for temperature regulation.
- Achieves Euroclass A1 fire classification for non-combustible compliance.
- Produced with ECOSE Technology binder for a bio-based material composition.
- Exceeds Part E Building Regulations for proven acoustic sound absorption.
| Brand | Knauf Insulation |
|---|---|
| Width | 400 mm |
| Acoustic | Yes |
| Applicable Standards | BRE Green Guide Rating A+, Declare Red List Free |
| Coverage | 2.88 m² |
| Fire Rating | Euroclass A1 |
| Fire Resistant | Yes |
| Length | 1200 mm |
| Moisture Resistant | No |
| Weight | 6.912 kg |
| R-Value | 2.85 m2K/W |
| Sold Per | Pack |
| Suitable For | Timber Frame Walls, Pitched roofs at rafter level, Internal Walls, Internal Floors, Multi-Application, Steel Frame Walls, Ground Floors |
| Thermal Conductivity | 0.035 W/mK |
| Thickness | 100 mm |
| Usage | Internal Use |
- Delivery cost will be calculated at checkout once delivery address has been confirmed
- Delivery lead times are an estimate only
- Delivery drivers will always prioritise safety over convenience when offloading materials
- Bagged products such as cement and plaster cannot be returned once opened
- Jumbo bags cannot be returned once delivered
- All other goods may be returned within 3 months with a proof of purchase provided
- Chargeable pallets may be returned for a full refund
- All online pricing is specific to Northern Ireland only. Pricing for our Isle of Man branch may vary.
Knauf Insulation OmniFit Slab 35 is a glass mineral wool slab designed for multiple applications across timber and steel frame properties. It functions as both a thermal and acoustic insulator, offering a thermal conductivity of 0.035W/mK and exceeding the acoustic requirements of Part E of the Building Regulations. The slab is friction-fitted between common stud centres, which provides a tight seal to prevent air movement and minimise heat loss without the need for cutting.
Produced using Knauf ECOSE Technology with a bio-based binder, this slab provides a non-combustible solution with a Euroclass A1 reaction to fire classification. Its versatile nature allows it to be used in pitched roofs, internal walls, internal floors, and ground floors, reducing the need to use multiple specific products for different areas.
- Friction fits between 400mm studs to prevent air movement and heat loss.
- Provides a thermal conductivity of 0.035W/mK for temperature regulation.
- Achieves Euroclass A1 fire classification for non-combustible compliance.
- Produced with ECOSE Technology binder for a bio-based material composition.
- Exceeds Part E Building Regulations for proven acoustic sound absorption.
| Brand | Knauf Insulation |
|---|---|
| Width | 400 mm |
| Acoustic | Yes |
| Applicable Standards | BRE Green Guide Rating A+, Declare Red List Free |
| Coverage | 2.88 m² |
| Fire Rating | Euroclass A1 |
| Fire Resistant | Yes |
| Length | 1200 mm |
| Moisture Resistant | No |
| Weight | 6.912 kg |
| R-Value | 2.85 m2K/W |
| Sold Per | Pack |
| Suitable For | Timber Frame Walls, Pitched roofs at rafter level, Internal Walls, Internal Floors, Multi-Application, Steel Frame Walls, Ground Floors |
| Thermal Conductivity | 0.035 W/mK |
| Thickness | 100 mm |
| Usage | Internal Use |
- Delivery cost will be calculated at checkout once delivery address has been confirmed
- Delivery lead times are an estimate only
- Delivery drivers will always prioritise safety over convenience when offloading materials
- Bagged products such as cement and plaster cannot be returned once opened
- Jumbo bags cannot be returned once delivered
- All other goods may be returned within 3 months with a proof of purchase provided
- Chargeable pallets may be returned for a full refund
- All online pricing is specific to Northern Ireland only. Pricing for our Isle of Man branch may vary.





