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Unique air-open, insulating breather membrane. Click for Product Page

PhotonAir is an air-open reflective insulating breather membrane which combines the thermal performance of multifoil insulation with Klober Permo® air underlay, for use on the cold side of the building in roofs and walls.

  • Upgrades thermal performance without the risk of condensation
  • No Vapour Barrier needed, no counter-battening required
  • Air-open membranes allow more water vapour to pass than air-closed membranes

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Thin, reflective insulation at a price you want to pay. Click for Product Page

PhotonFoil is a thin, reflective composite insulation for loft conversions, timber frame and re-roofing projects. An excellent vapour and air leakage barrier with a high density glass wool core and low emissivity outer layers.

  • Core R value with 2 air spaces 2.35 M2K/W
  • 0.18 U-value with 65mm foiled rigid insulation
  • Easy to cut and screws without snagging

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The breathable version of PhotonFoil, designed for cold side installation. Click for Product Page

PhotonFrame is a highly breathable thin reflective, composite insulation designed for installation on the cold side of timber frame structures. PhotonFrame is constructed with a high density glasswool core encased in micro-perforated low emissivity outer layers:

  • Core R value with 2 air spaces 2.35 M2K/W
  • 0.17 U-value with 140mm λ 0.035 glasswool timber frame stud
  • Water vapour resistance 0.22 MN.s/g.m


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Reflective breathable membrane, external fitting Click for Product Page

PhotonWrap is a high performance reflective breather membrane specifically designed to enhance thermal performance of timber frame structures whilst minimising the risk of interstitial condensation.

  • R value with adjacent air cavity 0.78 M2K/W
  • Excellent vapour permeability
  • Low emissivity reflective surface



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Reflective AVCL, warm side fitting Click for Product Page

PhotonCheck is a high performance reflective vapour control membrane specifically designed to enhance the thermal performance of wall, ceiling or floor structures.

  • R value with adjacent air cavity 0.78 M2K/W
  • Excellent vapour resistance
  • Low emissivity reflective surface

Find out more on these subjects in our FAQs