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

140mm Knauf Omnifit 35 - Multipurpose Glass Wool Insulation Slab - 1200mm x 400mm (pack of 4)
Guide Price
Rate this product
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: 1200mm x 400mm - 1.92m2
Our ratings on 21-10-2026:
Google My Business Reviews
4.8 out of 5
Ask question about this product. For price use 'Add to Quote' button.
To GET BEST PRICE for this product only fill below:
Send for Quotation
Need a quote for more products? and continue browsing to find other materials needed.

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. 
Knauf OXXI S - Siloxane Render - Stone Texture 1.5mm Grain - 25kg tub Knauf OXXI S - Siloxane Render - Stone Texture 1.5mm Grain - 25kg tub
Brand: Knauf Model: 1.5mm grain - 25kg
Delivery Time: 5 - 10 Working Days
Knauf OXXI S - Siloxane Render - Stone Texture 1.5mm Grain - 25kg tub
Knauf OXXI S - Siloxane Render - 1.5mm grain is a ready‑mixed siloxane decorative render designed for exterior façades requiring a durable, stone‑like textured finish with excellent resistance to dirt, moisture and weathering. Its siloxane binder provides enhanced hydrophobicity, ensuring that water..
15mm Knauf Fireboard - High Performance Plasterboard 1200mm x 2400mm
Guide Price
Brand: Knauf Model: 1200mm x 2400mm - 2.88m2
Delivery Time: 5 - 10 Working Days
15mm Knauf Fireboard - High Performance Plasterboard 1200mm x 2400mm
15mm Knauf Fireboard is a fleece-lined high performance square-edge plasterboard that provides up to two hours of fire protection in structural steel encasement. It is also ideal for use as fillets in deflection head details (an elastic polyurethane foam with intumescent firestop additives acts as a..
Guide Price: £71.58
£85.90 inc VAT
22mm Knauf EPS Thermal Laminate Insulation Board - (12.5mm EPS and 9.5mm Plasterboard) 22mm Knauf EPS Thermal Laminate Insulation Board - (12.5mm EPS and 9.5mm Plasterboard)
Brand: Knauf Model: 2400x1200mm - 2.88m2
Delivery Time: 1 - 2 days
22mm Knauf EPS Thermal Laminate Insulation Board - (12.5mm EPS and 9.5mm Plasterboard)
22mm Knauf EPS Thermal Laminate Insulation Board is an excellent modern solution for insulation and dry lining in walls and warm roof constructions, suitable for both refurbishment and new build projects. Consisting of 9.5mm tapered edge wallboard bonded to 12.5mm expanded polystyrene, it offers exc..
£55.39
£66.47 inc VAT
50mm Earthwool Flexible Insulation Slab Knauf (pack of 12) 50mm Earthwool Flexible Insulation Slab Knauf (pack of 12)
Guide Price
Brand: Knauf Model: 1200x600 - 8.64m2
Delivery Time: 2 - 3 working days
50mm Earthwool Flexible Insulation Slab Knauf (pack of 12)
50mm Earthwool Flexible Insulation Slab is a high-quality insulation product engineered to deliver exceptional thermal and acoustic performance. Crafted from premium glass mineral wool, this insulation is straightforward to install and boasts excellent fire resistance, making it an ideal choice for ..
Guide Price: £45.31
£54.37 inc VAT
90mm Knauf Omnifit 35 - Multipurpose Glass Wool Insulation Slab - 1200mm x 600mm (pack of 6)
Brand: Knauf Model: 1200mm x 600mm - 4.32m2
Delivery Time: 2 - 5 working days
90mm Knauf Omnifit 35 - Multipurpose Glass Wool Insulation Slab - 1200mm x 600mm (pack of 6)
90mm 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 re..
100mm Knauf DriTherm Cavity Slab 34 Super (pack of 8) 100mm Knauf DriTherm Cavity Slab 34 Super (pack of 8)
Guide Price
Brand: Knauf Model: 1200x455mm - 4.37m2
Delivery Time: 2 - 3 working days
100mm Knauf DriTherm Cavity Slab 34 Super (pack of 8)
100mm Knauf DriTherm 34 Super Cavity Slab is a high-performance insulation product specifically designed for use in external full-fill masonry cavity walls. These water-repellent glass mineral wool slabs provide exceptional thermal performance, making them an ideal choice for enhancing energy effici..
Guide Price: £68.86
£82.63 inc VAT
This product is listed in the following categories and systems (click to show).