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SuperFOIL SFTV Thermal Vapour Barrier 1.5m x 25m Roll - 37.5m2

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£64.80 Incl. VAT
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SuperFOIL SFTV is the ultimate all-round building membrane for roofs, walls and floors. Water & vapour proof SFTV is also a foil radiant barrier that will reduce solar gain in summer and improve insulation in winter. SFTV's reflective properties add to the overall uValue of the building fabric. To achieve the maximum energy performance in new build and retrofit projects, SFTV makes an ideal 'airtight' layer suitable for the entire building envelope.


Layers: 3 - polypropylene reinforced heavy laminated foil.
Width: 1.5m.
Length: 25m.
Coverage: 37.5m2.
Colour: Silver.
Weight per roll: 4.8kg.

Thermal insulation values including 2x air gaps

Roof: 0.95 R.
Wall: 1.42 R.
Floor: 2.8 R.


  • Waterproof.
  • Vapour proof.
  • Air tight.
  • Radiant barrier.
  • Helps to prevent mold & damp.
  • Enchances thermal resistance.


Length 25m Width 1500mm


Permeability Air Tight Roll Size 37.5m2

Questions & Answers


How thick is this product


1 mm


Hi can I use this for a cold flat roof Under the joists ?


Good Morning Himanshu


You would be better off using this product https://www.roofingsuperstore.co.uk/product/superfoil-sfuf-underfloor-foil-insulation-15m-x-8m-roll-12m2.html


How thick , how many mm ?


Thickness 1mm

Have a question about this product?


5 / 5 4 reviews
Paul Cockerill
30th October 2021
Seems very good so far so hopefully does what it says
Dave Godding
15th February 2021
Suprisingly good , considering how thin it is
3rd September 2020
Easy to use. Used on ceiling as a Vapor barrier went up easy
Ian Kennedy
18th July 2020
easy to handle and apply.
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SuperFOIL SFTV Thermal Vapour Barrier 1.5m x 25m Roll - 37.5m2

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