SuperFOIL SFTV 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. SFTVs reflective properties add to the overall U-value 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. Technical Width: 1.2m.Length: 20m.Coverage: 24m2.Thickness: less than 1mm.Weight per roll: 4kg.Colour: reflective silver foil. Installation SFTV should be installed on the warm side of the insulated structure, with special care being taken to ensure that all seams and holes are sealed effectively to render the whole structure moisture vapour proof, and to improve the thermal performance. It is important that SFTV is installed as a continuous barrier in order to prevent vapour entering the wall or the roof. Fixing & jointing All laps should be a minimum of 150mm and be sealed using SF Jointing Tape. Particular care is required when sealing around penetrations. Where the Barrier is breached by construction elements, the aperture should be sealed with sided SuperFOIL tape.