SuperFOIL SFBB Reflective Breather Membrane Roofing Felt - 25m x 1.5m is the UK's best value reflective watertight reflective breather membrane, SFBB is vapour permeable and allows for an easy passage of warm moist air to reduce build up of unwanted moisture, installing the SuperFOIL SFBB Reflective Breather Membrane Roofing Felt will vastly improve air tightness of the building and can also be applied to enhance thermal performance of u values in both new build and renovating projects.If you are looking to buy SuperFOIL SFBB by Boulder Developments, Your can purchase with confidence through Online Insulation, knowing that your order is very important to us.Key Features: SFBB is a watertight (W1 - EN 1928:2000) breather membrane for use in roofs & walls SFBB is vapour permeable and allows the passage of warm moist air to reduce condensation. Installing SFBB improves the airtightness of the building. SFBB is a radiant barrier it can be used to enhance thermal performance U-values in both new build and renovation projects. SFBB has a reflective thermal advantage over standard breather membranes. SFBB is easy to handle and install. SFBB can be used to help meet the requirements of Approved Document Part L and Scotland Part JProduct Dimensions:Thickness - 1mm Length - 25m Width - 1.5m Coverage - 37.5sqm Weight - 5.4kgAdditional Information:Water Vapour Resistance - 0.115MNs/g Resistance to water penetration - W1 Water Vapour Transmission (sd) : 0.023 Emmissivity - 0.3 Nail Tear Strength - 179N Tensile Strength - 194N/50mmSizes
