Reliable lightweight vapour permeable membrane Lightweight hybrid breathable roof underlay provides excellent performance whilst being flexible and only 100gsm. BBA certified and suitable for both fully supported and unsupported installations in tiled or slate pitch roofs. The Grafter 100 is a 3layer micro porous breather membrane which features a microporous film that is thermally bonded between two spunbonded polypropylene layers. Allows the roof to breathe so eliminates condensation whilst providing secondary protection against rainwater ingress. EasyTrim breather membranes improve energy efficiency and minimise the wind uplift that can loosen slates and tiles. Features & Benefits Protects roof slate and tile reduces wind uplift Reduces condensation in roof highly vapour permeable Driven rain and snow protection second line of defence Highly versatile use on warm cold and hybrid roofs Flexible yet strong good tensile tear strength UV stable for 3 month...