Cromar Vent 3 Classic Breather Membrane Felt Underlay 1m x 50m (50m2/Roll)

Premium triple-layer breather membrane crafted from high-tensile spun-bonded polypropylene and a micro-porous film. This innovative design resists water penetration while allowing moisture vapour to escape, delivering superior protection and durability for both warm and cold roof applications. Ideal for fully supported or unsupported tiled, slated, or metal roof systems, the membrane combines high vapour permeability with a robust waterproof barrier. The outer layer forms a waterproof surface, the middle layer serves as a breathable barrier, and the inner layer protects against abrasion while adding extra strength. The 1m width makes this roll particularly suited to smaller roofs, detailing work, and confined areas, offering easier handling and reduced wastage compared to wider rolls.