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SuperFOIL SF40 Multifoil Insulation

  • High-Performance Thermal Efficiency: Features 19 layers of interlaced foil and wadding with a 2.57 R-Value, designed to significantly reduce energy bills and maintain year-round comfort.

  • Versatile 3-in-1 Solution: Acts as a radiant barrier, vapour control layer, and heavy-duty insulation in one roll, reflecting 95% of radiant heat while preventing draughts and mould.

  • Easy, Space-Saving Installation: A slim 65mm profile that is flexible and easy to handle; simply cut with scissors and staple to roofs, walls, or floors – no specialist tools or PPE required.

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Please note that the prices shown here are intended as a guide and we cannot guarantee merchant pricing. The final price will be confirmed at the point of purchase from your preferred merchant.

Description

Experience superior energy efficiency with SuperFOIL SF40, the market’s leading high-performance multifoil insulation. Packed with 19 layers of interlaced foil and wadding, it delivers exceptional thermal resistance (Core R-Value of 2.57) to keep your home warm in winter and cool in summer, significantly reducing your energy bills.

3-in-1 Design for Maximum Protection Why buy three products when one does it all? SF40 combines a high-grade Radiant Barrier, a Vapour Control Layer (VCL), and heavy-duty Insulation in a single roll. Its reflective outer layers bounce 95% of radiant heat back into the room, while its airtight construction prevents draughts, condensation, and mould.

Versatile & Easy to Install Ideal for Roofs, Walls, and Floors, SF40 is perfect for new builds, extensions, and retrofits. Despite its heavy-duty performance, it is flexible and easy to handle. Simply roll out, cut with scissors, and staple – no specialist tools or protective clothing needed. Its slim 65mm profile saves valuable space compared to traditional insulation blocks.

Specification

Core Performance
2.66 R Value
Roof Performance*
3.61 R Value
Wall Performance*
4.14 R Value
Floor Performance*
5.98 R Value
Emittance
0.05
*Core value + 2 air spaces / EN 16012
Length
10m
Width
1.5m
Coverage
15m2
Fire Rating
Class E (Behind Plasterboard)
Resistance to Tearing
Length - 685N, Width - 585N
Resistance to Water Penetration
W1

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