Keep your home cool in summer by reflecting excessive heat with SuperFOIL SFTV1L Reflective Membrane Vapour Control and Radiant Barrier. Ideal for use as dry lining directly behind your finishing layer (such as plasterboard), SFTV1L - minimizes the amount of warm air from inside your home entering your insulated wall, roof or floor. With high-grade Aluminium for ultra-low emissivity and optimum performance - it is independently tested to the highest industry standards, SFTV1L is fully waterproof and vapour resistant. The SFTV1L reduces condensation and helps prevent longer-term issues such as dampness or rot. Features: Fibre reinforced for robust construction and durability Prevents condensation and damp Lightweight, flexible and easy to install Ultra-low emittance surface reduces heat loss and retains energy Vapour control layer; exceptionally low transmission rate Wall Thermal Performance - 0.71 R Value Roof Thermal Performance - 0.47 R Value Wall Thermal Performance - 0.71 R Value S