Icopal supplies membranes to protect your building from damaging influence from the external environment.

The Icopal wind barrier has a function of acting as the secondary climate screen, where it must protect the insulation material from moisture that condensates on the backside of the exterior wall.

Furthermore the wind barrier must also be diffusion open in a degree that allows any kind of trapped vapour inside the insulation material from passing through the membrane so it may condensate on the exterior wall backside or just simply be ventilated away.