Airtightness systems for roof, wall and window

Belgafix PREMIUM

Vapor barrier and air tightness membrane specifically for blow-in insulation

Belgafix PREMIUM is a vapor-inhibiting and airtight membrane with a constant sd value for use in pitched roofs with a vapor-permeable outer layer, with all sorts of fibrous insulation, also for blow-in insulation.


  • width 1,5 m x length 50 m (75 m²/roll)