Permavent Max Breather Membrane 1m x 50m

For use on all types of domestic and commercial roofing and walling applications, including:

• cold non vented
• traditional hybrid
• cold vented
• Scottish and fully boarded applications

Suitable for use in all applications*. (Wind Zones in the UK for underlays used for specific applications as described in BS 5534)

Permavent use the very latest technology from the medical industry to encapsulate the highest grade hydrophobic film inside the very highest quality spunbond polypropylene layers. Unlike other companies, who simply stick the different layers together, Permavent membranes are manufactured in a single process that greatly improves the quality and integrity of our membranes. This 3 in 1 process means that Permavent offer the best performing breather membranes in their class with superior strength, breathability, flexibility and durability.

Permavent-BLACK is also fully certified under the CE having been tested and certified by independent European laboratories and is only manufactured under the strictest ISO requirements.

• Weight, g/m2 140
• Water tightness, class w1
• Water vapour transmission (sd),m 0.02
• Maximum tensile force (MD), N/50mm 330
• Maximum tensile force (CD), N/50mm 230
• Elongation at max. tensile force (MD), 80%
• Elongation at max. tensile force (CD), 110%
• Resistance to tearing MD (nail shank), N150
• Resistance to tearing CD (nail shank), N150