SMARTPLY PROPASSIV is a structural OSB panel with integrated vapour control and air barrier properties for use as structural sheathing in timber frame structures. 

Extensive development of the OSB core properties has resulted in an airtight OSB suited to the needs of the timber frame market.

The factory applied specialist surface finish technology provides increased and constant vapour resistance on the warm side of the construction. The hygroscopic nature of the OSB panel acts as a humidity buffer to help prevent interstitial condensation within the timber frame structure in limited cases of reverse diffusion.

Technical specifications

  • Certification: Conforms to EN 300 & EN 13986
  • Environmental: FSC®
  • Environmental: FSC®
  • Standard panel size 2397 X 1197mm
  • Panel thickness: 12.5mm
  • Service class: 1