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.
Klober Permo Air Underlay 50m x 1m
Size: 1m x 50m roll
Weight: 8 kg/roll
Water vapour resistance (MNs/g value): 0.045 MNs/g
Water vapour permeability: 2735 g/m2 /day
Air and vapour permeable
BBA & NHBC approved for needing no additional high level ventilation, saving time and cost.
Assists during the drying out period and helps with the ventilation on complex roofs.
Strong 3 layer recyclable fleece.