PhotonAir is a 2 in 1 breathable multifoil insulation combining the thermal performance of multi foil insulation with Klober Permo® air underlay. Installed in the same way as a standard breathable roofing felt, PhotonAir is water tight and upgrades the thermal value of your roof whilst removing the risk of condensation.

The insulation is constructed with high density glasswool at its core, encapsulated between a perforated reflective lower layer and Klober Permo® air.

PhotonAir is a true low resistance (LR ) underlay:

BS EN 5250:2011 states that only LR underlays remove the risk of interstitial condensation forming without the need for any associated ventilation to roof voids.
NHBC accepts the use of membranes certified as both air and vapour-open without the requirement for supporting ridge or high level ventilation.

The product has been independently tested and certified to the latest European Standards by accredited European test houses and has achieved LABC (Local Authority Building Control) Registered Details.

PhotonAir UKCA DoC