Ultraperm Premium BBA Breather Membrane 1.5m x 50m

135gsm Universal breather membrane high performance underlay for all roof designs. It can be used on warm and cold, supported and un-supported, ventilated and un-ventilated roofs. Non-woven composite membrane with exceptional water vapour transmission, hydrophobic (water repellent) characteristics and good UV stabilisation. The membrane also has good air barrier characteristics designed to improve the air-tightness of the building. Used on traditional cold roofs and modern warm roof installations, tough, tear-resistant and durable with superior performance to traditional felts. Complies with new roofing building regs BS 5534: 250mm batten width - zones 1-5 without tapes 345mm batten width - zone 1 without tapes Typical applications; Pitched roofing felt, timber frame and wall applications Main features: 135gsm BBA certified for roofs and walls Illustrated installation instructions with each roll. Manufactured to ISO EN 9001 Flame retardant to Class E.