Cromar Vent3 1.5m x 50m 135g Breather Membrane

Designed for use in a fully supported or unsupported tiled, slated or metal roof system, the Cromar Vent3 is a triple layer fabric, high performance breather membrane, made from high tensile spun bonded polypropylene layers, around a micro‐porous polypropylene film. The outer layer forms the functional waterproof surface, the middle layer is the breathable, waterproof membrane, and the inner layer protects the membrane from abrasion and damage, also giving additional strength. This enables the fabric to allow moisture vapour to pass through, whilst remaining fully waterproof.