The VELUX BBX vapour barrier creates an airtight and watertight seal that prevents condensation from forming in the roof construction, where is may cause irreversible damage.
The VELUX BBX vapour barrier is a fully welded rubber gasket with a double pressure seal. It provides a quick installation that is 100% vapour and airtight.
This product can be used with all standard flashings and in roof pitches between 15 – 90 degrees.
