Cromar Vent 3 High Performance Breathable Membrane 50M x 1M Grey

Cromar Vent3 is a lightweight, high-performance breathable roof membrane. Attached with a triple layer high-performance breathable membrane made from two high tensile spun bonded polypropylene layers that are thermally calendared to a microporous polypropylene film. Measuring 50 x 1m (L x W), the product has a UV resistance stable for up to 4 months and designed for fully supported or unsupported tiled, slated and metal roof systems. The Vent3 Light has full moisture vapour permeability which maintains the highest levels of water resistance. The high vapour permeability and waterproof nature of the breathable membrane is combined to give an excellent tensile and tear strength. Vent 3 Light is equally suitable when unsupported over rafters or laid directly over any insulation. The light membrane allows for the escape of water vapour within the roof structure and prevents against wind-driven rain, snow and dust. Provides a permanent breather underlay and will last the life of the roof construction. Provides a permanent breather underlay and will last the life of the roof construction. The product conforms to BBA and BS 553: 2003.