Vapour Permeable Underlays - Permo Air
Permo® air is the most breathable air open low resistance underlay on the market. It is the ideal solution where there is a high risk of condensation forming in the roofspace.
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Product Information
Minimum carriage paid order 2 rolls or £8.95 carriage charge.
Permo® air is a strong 3 layer product consisting of UV stabilised PP fleece and a high performance Meltblown layer.
Colour
Outer surface- dark blue
Inner surface- grey
Features:
Air open & vapour permeable
Over 13% more breathable than any other ‘air open’ underlay on the market
Lowest vapour resistance of all breathable membranes
Being both air open & vapour permeable further minimises the risk of condensation forming, particularly during the drying out period of a building
No ventilation required
BBA and CE certified for cold and warm roof applications
Available in 2 widths: 1.5 x 50m & 1m x 50m
Hydrophobically treated
Type LR underlay
Strong 3 layer material
15 year guarantee
Recyclable
UV stable for 4 months
Batten spacing 350mm
Superior nail tear strength
Permo® air is a strong 3 layer product consisting of UV stabilised PP fleece and a high performance Meltblown layer.
Colour
Outer surface- dark blue
Inner surface- grey
Features:
Air open & vapour permeable
Over 13% more breathable than any other ‘air open’ underlay on the market
Lowest vapour resistance of all breathable membranes
Being both air open & vapour permeable further minimises the risk of condensation forming, particularly during the drying out period of a building
No ventilation required
BBA and CE certified for cold and warm roof applications
Available in 2 widths: 1.5 x 50m & 1m x 50m
Hydrophobically treated
Type LR underlay
Strong 3 layer material
15 year guarantee
Recyclable
UV stable for 4 months
Batten spacing 350mm
Superior nail tear strength
