Lightweight, yet high performance multifoil comprising of 11 layers. Provides a 3-in-1 high performance insulation solution with a radiant barrier and a vapour control layer. Fibre-reinforced outer layers are specially developed for superior tear resistance and are easier to work with than other multifoils. Radiant barrier reduces solar gain and keeps homes cooler in summer as well as warmer in winter. Helps to prevent interstitial condensation once sealed with tape. With no harmful particles or fibres it is ideal for use in walls, roofs and floors in new build or retrofit. Polyester & Aluminium Construction Thermal Resistance up to 1.63m²K/W Thickness: 45mm Suitable for Walls, Roofs & Under Suspended Floors Polyester & Aluminium Construction Thermal Resistance up to 1.63m²K/W Thickness: 45mm Suitable for Walls, Roofs & Under Suspended Floors