140mm Knauf Omnifit 35 - Multipurpose Glass Wool Insulation Slab - 1200mm x 400mm (pack of 4)

Guide Price
140mm Knauf Omnifit 35 - Multipurpose Glass Wool Insulation Slab - 1200mm x 400mm (pack of 4)
Guide Price: £31.03 (£37.24 inc VAT)
Price per m2: £16.16/m2 (£19.39 inc VAT)
- Product Code: A1-5126
- Delivery Time: 2 - 5 working days
- Brand: Knauf (Tech. support: 08000304135)
- Model and Size: 1200mm x 400mm - 1.92m2
Our ratings on 20-05-2025:

4.8 out of 5
Guide Price: £33.50
(£40.20 inc VAT)
140mm Knauf Omnifit 35 - Multipurpose Glass Wool Insulation Slab - 1200mm x 400mm (pack of 4)
Length: 1200mm
Width: 400mm
Thickness: 140mm
Pack Quantity: 4
Board Coverage: 0.48m2
Pack Coverage: 1.92m2
Thermal Conductivity: 0.035W/mK
R-Value: 4m2K/W
Fire Rating (Reaction to Fire): A1(Non-combustible)
140mm Knauf Omnifit 35 Glass Wool Slabs are rigid multipurpose, flexible, non-combustible glass mineral wool slab that is designed for friction fitting installation at 400mm spacings. It has excellent thermal, acoustic, and fire resistance. The sound absorption qualities of Knauf Omnifit slabs are remarkable. Knauf Omnifit slab is used to insulate timber and metal stud partitions, timber frame walls, between rafters, and suspended timber floors, generally a wide range of structures. 400mm width size allows friction fitting between common stud centres without any cutting and waste on-site. This insulation is not dangerous to the environment and has no potential for ozone depletion or global warming.
APPLICATION
- Timber frame and metal stud partitions,
- Between rafters,
- In suspended timber floors
CHARACTERISTICS
- Lightweight and easy to handle and install,
- Friction fits 400mm spacings,
- Eliminates air gaps,
- Non-combustible,
- A1 fire rated,
- Does not sustain vermin and will not encourage the growth of fungi, mould or bacteria.
- Manufactured using Knauf Insulation’s unique bio-based binder, ECOSE Technology,
- Red free - no ingredients in the product that are on the red list - including formaldehyde or phenol.
CERTIFICATION
Manufactured in accordance with
- BS EN 13162, ISO 50001 Energy Management Systems,
- ISO 14001 Environmental Management Systems,
- ISO 9001 Quality Management systems,
- Certified by TÜV Nord.
- ‘Red List Free’ label.
Brand: Knauf
Model and Size: 1200mm x 400mm - 1.92m2
Delivery Time: 2 - 5 working days
140mm Knauf Omnifit 35 Glass Wool Slabs are rigid multipurpose, flexible, non-combustible glass mineral wool slab that is designed for friction fitting installation at 400mm spacings. It has excellent thermal, acoustic, and fire resistance. The sound absorption qualities of Knauf Omnifit slabs are r..
Guide Price: £31.03
£37.24 inc VAT
Brand: Knauf
Model and Size: 1200mm x 1000mm - 24m2
Delivery Time: 8 - 12 weeks
125mm Knauf Rocksilk Krimpact Flat Roof Slab Extra is a high-performance insulation solution designed specifically for flat roofing applications. Manufactured from non-combustible stone wool, this product offers excellent thermal insulation properties, helping to maintain comfortable indoor temperat..
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Delivery Time: 1 - 2 days
50mm Knauf Rocksilk RS60 Universal Insulation Slab is a high-performance mineral wool insulation product suitable for a variety of applications. Manufactured from rock mineral wool using Knauf's unique bio-based ECOSE Technology binder, it provides excellent thermal and acoustic insulation propertie..
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£49.96 inc VAT
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£56.65 inc VAT
Brand: Knauf
Model and Size: 1200mm x 600mm - 2.88m2
Delivery Time: 2 - 5 working days
140mm Knauf Omnifit 35 Glass Wool Slabs are rigid multipurpose, flexible, non-combustible glass mineral wool slab that is designed for friction fitting installation at 600mm spacings. It has excellent thermal, acoustic, and fire resistance. The sound absorption qualities of Knauf Omnifit slabs are r..
Guide Price: £33.50
£40.20 inc VAT
Brand: Knauf
Model and Size: 600mm x 1200mm - 0.72m2 28mm
Delivery Time: TBC
Knauf Brio 28 (18mm Gypsum Fibreboard and 10mm Wood Fibre) is a high performance gypsum fibre dry screed low density floor board made from 60% recycled material with improved acoustic performance and underfloor heating efficiency, specially developed for use in new or refurbished residential an..