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Developed as a universal breather membrane, Ultraperm is a high performance underlay of all roof designs. The membrane also has good air barrier characteristics designed to improve the air-tightness of the building.
It can be used on warm and cold, supported and un-supported, ventilated and un-ventilated roofs. It is a non-woven composite membrane with exceptional water vapour transmission, hydrophobic (water repellent) characteristics and good UV stabilisation.