140mm Knauf Omnifit 35 - Multipurpose Glass Wool Insulation Slab - 1200mm x 600mm (pack of 4)

Guide Price
140mm Knauf Omnifit 35 - Multipurpose Glass Wool Insulation Slab - 1200mm x 600mm (pack of 4)
Guide Price: £33.50 (£40.20 inc VAT)
Price per m2: £11.63/m2 (£13.96 inc VAT)
- Product Code: A1-5132
- Delivery Time: 2 - 5 working days
- Brand: Knauf (Tech. support: 08000304135)
- Model and Size: 1200mm x 600mm - 2.88m2
Our ratings on 08-10-2025:

4.8 out of 5
Guide Price: £31.03
(£37.24 inc VAT)
140mm Knauf Omnifit 35 - Multipurpose Glass Wool Insulation Slab - 1200mm x 600mm (pack of 4)
Length: 1200mm
Width: 600mm
Thickness: 140mm
Pack Quantity: 4
Board Coverage: 0.72m2
Pack Coverage: 2.88m2
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 600mm 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
- Lightweight and easy to handle and install,
- Friction fits 600mm 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.
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.
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