Permo® air

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.

Product features & benefits

  • 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
  • Available in 2 widths: 1.5m x 50m & 1m x 50m
  • Hydrophobically treated
  • Type LR underlay
  • Strong 3 layer material
  • Recyclable
  • UV stable for 4 months
  • Batten spacing 350mm
  • Superior nail tear strength

Area of application
Suitable for cold and warm roof applications.

Permo® air is a strong 3 layer product consisting of UV stabilised PP fleece and a high performance Meltblown layer.
Roll size / Roll weight / Packaging
50m x 1.00m (50m2) / 8.6kg / 20 rolls/pallet
50m x 1,50m (75m2) / 13.0kg / 20 rolls/pallet

CE certified

Permo® air should be laid in accordance with our installation details set out in the BBA certificate..

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