Vapour barrier collar (BBX)
VELUX’s special vapour barrier collar stops warm, moist air from your home from entering your roof construction. It’s quick and easy to install in your window frame, and creates a tight seal to protect your roof from condensation and potential damage.
Technical details
Material: polyethylene
Material thickness: 0.15 mm
SD value (water vapour diffusion resistance): 40 m
Tape: 60 mm
|