This SF40 multifoil insulation from SuperFOIL boasts a remarkable 68% increase in performance compared to SuperFOIL’s standard multifoil. Not only does it beat any multifoil competitor product’s R-Value, but it also offers extreme cost-effectiveness, making it an fantastic choice for your insulation needs.
SuperFOIL are committed to building superior multi-foil insulation. By combining an impressive 19 layers of technical innovation, this SF40 multi-layer foil insulation achieves maximum efficiency, surpassing previously thought possible values within the industry. These layers include two layers of polypropylene reinforced heavy outer laminated foil, twelve layers of aluminium-coated reflective foil PET and six layers of loft quilt. With its enhanced thickness and radiant reflective and air barrier properties, this SF40 insulation offers numerous benefits over traditional non-reflective, open-faced insulation, such as glass fibre.
Features & Benefits: Multi-layer Foil Insulation SF40 by SuperFOIL – 1.5m x 10m Roll
- 68% increase in performance over standard multifoil
- Cost-effective with outstanding rValues
- 37 layers of technical innovation for maximum efficiency
- Enhanced thickness, radiant reflective and air barrier properties
- Efficient use of space, aids insulation and reduces waste
- Simple to install
- 18.5kg weight
- 10m length x 1.5mm width
- 65mm thickness installed
- 15m² roll size
What’s more, this SuperFOIL SF40 insulation comes with CE certified vapour and water barrier outer layers, ensuring exceptional performance. With efficient use of space, it maximises your roof and wall insulation. With the strongest multi-foil material, it also aids in installation, reducing waste and providing excellent value for your money. When it comes to thermal resistance, this SF40 insulation achieves outstanding rValues of 3.58m²K/W for pitched roofs, 4.04m²K/W for walls, 3.58m²K/W for flat roofs and 5.69m²K/W for floors.
Additionally, with a simple installation process, this multi-layer foil insulation can be fitted horizontally or vertically and requires a 25mm air gap. It can be easily cut with a knife or scissors to tailor to your specific needs, providing an air seal and radiant barrier. Thanks to the LABC registered detail, complying with Building Regulations is straightforward.
Standards & Certification
- CE certified: Vapour and water barrier outer layers
- LABC registered detail: Building Regulations compliant
Please note:
- Using 30mm staples is recommended with this SF40 insulation.





















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