Permo® air, a low resistance air-open underlay. It is the ideal solution where there is a high risk of condensation forming in the roofspace. Being both air open & vapour permeable further minimises the risk of condensation forming, particularly during the drying out period of a building. Available in 2 widths 1.5m x 50 and 1m x 50m
Permo® air is a strong 3 layer product consisting of UV stabilised PP fleece and a high performance Meltblown layer
