VELUX vapour barrier for roof windows measuring 78×98. Helps prevent condensation forming in the roof construction. Complete vapour barrier collar, fully welded in all corners. A fully welded rubber gasket with a double pressure seal guarantees speedy installation and a vapour and air tight solution. Reinforced corners for extra security against perforation. VELUX installation tool helps fit the collar in minutes.

• Helps prevent condensation forming in the roof construction
• Complete vapour barrier collar, fully welded in all corners
• A fully welded rubber gasket with a double pressure seal guarantees speedy installation and a vapour and air tight solution