The Vent3 Classic Breather Membrane made from polypropylene is a high performance membrane for use behind external cladding. The membrane is brilliant in weatherproofing and acts as a second barrier to wind driven rain and snowThe high vapour permeability and waterproof nature of the membrane, combined with excellent tensile/tear strength and high wind uplift resistance make Vent3 Classic the professionaland#039;s choice as the ultimate breather membrane.Three layer membraneCold and warm applications3 layer spun-bonded membraneClean and easy to useLightweight and flexibleExcellent tensile and tear strengthUV stable for 3 monthsNo additional ventilation requiredBBA approved Available in either a 25m or 50m roll the membrane comes in 1m width as standard to allow easy use in typical cladding configurations.The Vent3 Breather Membrane can also be used as a roof underlay