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SuperFOIL SFTV Thermal Vapour Barrier 1.5m x 50m Roll - 75m2

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£129.60 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: 50m.
Coverage: 75m2.
Colour: Silver.
Weight per roll: 10.7kg.

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 50m Width 1500mm


Permeability Air Tight
Vapour Barrier
Roll Size 75m2

Questions & Answers


Can this product be retro fitted under slate tiles on a pitched roof to prolong the life of a bituminous underlay. The house is in South Africa where temps range from 5c to 40c throughout the year?


We wouldn't recommend using SFTV over the top of a felt.

SFBB may be the better option as it was designed to be used as a secondary rain barrier, however we cannot guarantee the results after as it hasn't been designed / intended for that purpose.

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5 / 5 1 reviews
10th March
Excellent product very pleased with this product
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SuperFOIL SFTV Thermal Vapour Barrier 1.5m x 50m Roll - 75m2

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