Klober Air Open Roofing membrane sets new standards

Klober’s BBA approved, ‘air open’ type LR roofing underlay, Permo Air, offers the highest rate of water vapour transmission currently available (2736 g/m2/day) and the lowest water vapour resistance (0.08Mn/g). 13% more breathable than any other underlay, Permo Air can therefore cope with intense periods of water vapour creation such as during the critical drying out period of a new building. Available in 1.5 and 1 metre widths and 50 metre lengths, the larger size weighs only 13kg. Hydrophobically treated, it is suitable for cold and warm roof construction and has exceptional nail tear resistance.

Kettering Roofing installed Permo Air as part of Kettering Borough Council’s focus of work to upgrade dwellings and 10 blocks of flats on the town’s Grange Estate. This formed part of Phase 2 of the Northamptonshire Neighbourhood Renewal Strategy, re-roofing having been identified as a key element in the provision of thermally efficient homes to Decent Homes Standard requirements.