125mm Knauf Rocksilk Krimpact Flat Roof Slab Extra - pack of 20

125mm Knauf Rocksilk Krimpact Flat Roof Slab Extra - pack of 20
  • Product Code: A1-1400
  • Delivery Time: 8 - 12 weeks
  • Brand: Knauf (Tech. support: 08000304135)
  • Model: 1200mm x 1000mm - 24m2
Our ratings on 27-10-2026:
Google My Business Reviews
4.8 out of 5
To GET BEST PRICE for this product only fill below:
Need a quote for more products? and continue browsing to find other materials needed.

125mm Knauf Rocksilk Krimpact Flat Roof Slab Extra - pack of 20

Thickness: 125mm
Width: 900mm
Length: 1200mm
Pack Coverage: 24m2
Thermal Conductivity: 0.040W/mK
R-Value: 3.1m2K/W
Compressive Strength: 90kPa

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 temperatures while reducing energy costs.The Krimpact Flat Roof Slab is characterised by its robust structure, which provides exceptional compressive strength, making it suitable for use in both new builds and refurbishment projects. Its durability ensures that it can withstand the rigours of construction and the demands of the roofing environment.In addition to its thermal performance, the Knauf Rocksilk Krimpact Flat Roof Slab also offers sound insulation benefits, contributing to a quieter indoor environment. This slab is resistant to moisture and does not promote the growth of mould or fungi, ensuring long-lasting performance and hygiene.Easy to handle and install, the slabs can be cut to size as needed, allowing for a precise fit in various roofing configurations. With its combination of thermal efficiency, durability, and acoustic performance, the Knauf Rocksilk Krimpact Flat Roof Slab is an ideal choice for architects, builders, and contractors looking to enhance the performance of flat roofing systems.

APPLICATION

  • Ideal for use in both new build and refurbishment projects, providing thermal insulation for flat roofs in residential, commercial, and industrial buildings. 
  • Can be used in warm roof constructions, where the insulation is placed above the roof deck, helping to prevent heat loss and condensation issues. 

CHARACTERISTICS

  • Provides effective insulation to maintain comfortable indoor temperatures and reduce energy costs
  • High compressive strength suitable for areas subject to foot traffic or light vehicular loads
  • Contributes to a quieter indoor environment by reducing sound transmission
  • Non-combustible material that enhances fire safety in building applications
  • Odourless, non-hygroscopic, rot proof
  • Does not absorb moisture, ensuring long-lasting performance and hygiene.
  • Do not sustain vermin and will not encourage the growth of fungi, mould or bacteria
  • Zero Ozone Depletion Potential and zero Global Warming Potential
  • Negligible resistance to the passage of water vapour
  • Lightweight and can be easily cut to size for precise fitting in various roofing configurations.

CERTIFICATION

  • BBA Certificate 08/4526
  • FM Approved: certificate no 3063483
  • Conforms with the requirements of BS EN 13162
  • Manufactured in accordance with;
    • ISO 50001 Energy Management Systems,
    • ISO 14001 Environmental Management Systems,
    • ISO 45001 Occupational Health and Safety Management Systems
    • ISO 9001 Quality Management Systems.

Knauf Hydro Flex Liquid Foil Waterproof Tanking Membrane  - 15 Kg
Guide Price
Brand: Knauf Model: 15kg
Delivery Time: In Stock 1-2 working days
Knauf Hydro Flex Liquid Foil Waterproof Tanking Membrane is a one-component, ready-to-use highly plastic liquid waterproof tanking membrane for wall and floor surfaces under ceramic tiles. Although the tiles themselves are impermeable to water, the joints between them are not 100% waterproof. Even w..
Guide Price: £77.00
£92.40 inc VAT
Brand: Knauf Model: 900mm x 1200mm - 2.16m2
Delivery Time: 7 - 10 days
6mm x 900mm x 2400mm Knauf Rooftop Aquapanel Cement Board is an extremely durable construction board highly resistant to moisture, mould and mildew growth. It can be used as a cover board above the insulation and as a substrate to take on the waterproofing layer. Knauf Aquapanel Cement Board Rooftop..
Brand: Knauf Model: 13.5m x 1.2m - 16.20m2
Delivery Time: 1 - 2 days
50mm Knauf Earthwool Acoustic Insulation Roll is a high-performance, sustainable insulation solution designed to provide excellent acoustic and thermal performance. Manufactured from renewable and recycled materials, this insulation roll is split into two 600mm wide sections, making it easy to insta..
£50.50
£60.60 inc VAT
Knauf Aquapanel Water Barrier - Water-Resistant, Wind-Tight Membrane for Exterior Cement-Board Systems  - 1.5m x 50m roll
Guide Price
Brand: Knauf Model: 1.5m x 50m - 75m2
Delivery Time: 5 - 7 days
Knauf Aquapanel Water Barrier is a high‑diffusion, water‑resistant and wind‑tight membrane installed directly behind Aquapanel Cement Board Outdoor to stop any moisture that passes behind the boards from entering the wall structure. It provides superior air and moisture management, forming the essen..
Guide Price: £438.10
£525.72 inc VAT
100mm Knauf Earthwool Rafter Roll (pallet of 24)
Guide Price
Brand: Knauf Model: 1200mm x 4000mm - 115.20m2
Delivery Time: 4 - 5 weeks
100mm Knauf Earthwool Rafter Roll is a premium insulation product specifically designed for use in pitched roofs and rafter spaces. Manufactured using Knauf's innovative Ecose Technology, this insulation solution is made from sustainable materials, ensuring a reduced environmental impact while provi..
Guide Price: £2,826.14
£3,391.37 inc VAT
Brand: Knauf Model: 1.5mm grain - 25kg
Delivery Time: 5 - 10 Working Days
Knauf Conni S - 1.5mm grain is a ready‑mixed silicone resin stone texture render designed for exterior façades requiring a durable, highly weather‑resistant and vapour‑permeable decorative finish. Its silicone‑resin binder provides excellent water repellence, enhanced dirt resistance, and long‑term ..
This product is listed in the following categories and systems (click to show).