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Knauf  |  SKU: 48946959417691

Knauf Supafil 40 Blowing wool - All Thicknesses


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Things you should know about this product!

  • This product is sold by the pallet
  • This product is available in the following thicknesses: 50mm, 65mm, 75mm, 85mm and 100mm

Description

Supafil® 40 is a glass mineral blowing wool designed for use in external full-fill masonry cavity walls. It provides a thermal conductivity of 0.040 W/mK when installed at the recommended density of 18 kg/m³. Like other products in the Supafil range, Supafil® 40 is non-combustible, holding the highest Euroclass A1 reaction to fire classification. This makes it an excellent choice for projects requiring enhanced thermal insulation along with superior fire safety. Its design ensures effective thermal performance while maintaining safety and compliance in building structures.

Specifications

  • Material type
    Glass mineral wool
  • Thermal conductivity
    0.040 W/mK
  • Fire rating
    Euroclass A1
  • Density
    18 kg/m3

Key Features

  • Holds an Agrément certificate by the BBA for use in all exposure zones, including those in very severe areas.
  • Suitable for use in wider cavities of up to 125mm.  
  • Made with a water-repellent additive to resist moisture ingress.
  • Installed by 'Approved Supafil® Installers', using specific blowing machines, hoses and nozzles as part of a system.

Where to use

Cavity walls: Supafil 40 is a high-performance, loose-fill glass mineral wool insulation designed for use in cavity walls. It provides excellent thermal and acoustic insulation, helping to improve energy efficiency and reduce heating costs in residential and commercial buildings. Supafil 40 is non-combustible, offering enhanced fire safety, and is made from up to 80% recycled materials, making it an environmentally friendly choice. The insulation is easy to install using a blowing machine, ensuring a quick and effective application without gaps or voids, which maximises its insulating performance and contributes to a comfortable and safe indoor environment.

Frequently asked questions

  • How is Knauf Supafil 40 installed? - Knauf Supafil 40 is installed using specialised blowing machines. The loose-fill insulation is blown into the cavity through drilled holes, filling the space completely and ensuring effective thermal insulation. Installation should be carried out by trained professionals to ensure proper coverage and performance.
  • Does Knauf Supafil 40 provide acoustic insulation? - Yes, Knauf Supafil 40 offers excellent acoustic insulation properties. Its loose-fill structure helps absorb sound, reducing noise transmission between rooms and from external sources, enhancing the comfort of living and working environments.
  • What maintenance does Knauf Supafil 40 require after installation? - Once installed, Knauf Supafil 40 requires no ongoing maintenance. It remains effective for the lifetime of the building, provided it is not disturbed. Its durability ensures consistent thermal and acoustic performance over time.

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Compare with similar products

Compare below to see what sets these products apart:

A table comparing the facets of 2 products
Facet
Knauf Supafil 40 Blowing wool - All Thicknesses
View details
Superglass Superwhite 40 Blown Cavity Wall Insulation - All Thicknesses
View details
Price
Price
Length
Length
n/a
n/a
Width
Width
n/a
n/a
Edge
Edge
n/a
n/a
Fire rating
Fire rating
Euroclass A1
Euroclass A1
Compressive strength
Compressive strength
n/a
n/a
Thermal conductivity
Thermal conductivity
0.040 W/mK
0.040W/mK
Material type
Material type
Glass mineral wool
Glass mineral wool
Knauf

Knauf Supafil 40 Blowing wool - All Thicknesses

Length

N/A

Width

N/A

Edge

N/A

Fire rating

Euroclass A1

Compressive strength

N/A

Density

18 kg/m3

Thermal conductivity

0.040 W/mK

Material type

Glass mineral wool
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