Cromar Vent 3 Classic Breather Membrane Felt Underlay 1.5m x 50m (75m2/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 1.5m width makes this roll particularly suited to large roofs and open areas, reducing the number of overlaps and speeding up installation, thereby improving overall efficiency on site.