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Klober Permo Air Open Underlay Roofing Breather Felt - 50m x 1.5m Roll

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£258.41 Incl. VAT
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Klober Permo Air is a breathable, air open and low resistance underlay. The Permo Air Breather Membrane requires no ventilation, allowing for 75m² coverage when used on a roof space and is the perfect solution where roof spaces are at risk of high condensation.

An air permeable membrane allows air and water vapour to pass through the membrane, meaning additional ventilation is not always needed. It can also reduce the build-up of condensation within the structure of the roof.

Features & Benefits: Klober Permo Air Open Underlay Roofing Breather Felt - 50m x 1.5m Roll

  • Minimises risk of condensation forming (particularly during the drying out period of a building)
  • Lowest vapour resistance of all breathable membranes
  • No ventilation required
  • Hydrophobically treated
  • Type LR underlay
  • Strong three layer material
  • 15 year guarantee
  • Recyclable
  • UV stability (up to four months)
  • Superior nail tear strength
  • Suitable for cold and warm roof applications


  • When installing Permo Air Breathable Membranes, you should lay them out as detailed in the BBA approved certification.

Standards & Certification

  • Breathable air membrane Permo air is CE certified for reassurance in safety, health and environmental protection requirements.

Please note:

  • Please note no ventilation is required with this product.

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Klober Permo Air Open Underlay Roofing Breather Felt - 50m x 1.5m Roll

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