Home
Contact
Description
Permavent Eco Breather Membrane 1.5m x 50m Roll Lightweight Breather Membrane 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 zones 1 to 4*. (Wind Zones in the UK for underlays used for specific applications as described in BS 5534) Free delivery to mainland uk postcodes !!! Orders placed before 12 noon Monday - Friday will be delivered the next working day (mainland uk only other areas 3-5 working days) For further product information please contact us 01773 608808 or 0800 161 3722 scott @ permaroof.co.uk
Permavent uses the 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-ECO 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.
Permavent membranes are certified for use in all types of roofing and walling applications and conform fully with: BS 5250: 2011 Code of practice for control of condensation in buildings. BS 5534: 2014 Code of practice for slating and tiling. BS 8000-6: 1990 Workmanship on building sites. BS EN 1991-1-4; 2005 +A1: 2010 +UK NA. BS EN 13859: Flexible sheets for underlays. BS EN 13501-1 2007.Geographical wind zone | Design wind pressure, Pu, for underlay (N/m2) |
Well sealed ceiling (e.g. standard domestic application) | Minimum requirement |
5 | 1600 |
4 | 1330 |
3 | 1150 |
2 | 975 |
1 | 820 |
Not sealed or non-ceiling (e.g. garage or warehouse) | 1900 |
Not sealed or non-ceiling in addition to permanent structural opening (e.g. car port or open store) | 2350 |
Weight, g/m2 | 90 |
Water tightness, class | w1 |
Water vapour transmission (sd),m | 0.02 |
Maximum tensile force (MD), N/50mm | 200 |
Maximum tensile force (CD), N/50mm | 150 |
Elongation at max. tensile force (MD), % | 65 |
Elongation at max. tensile force (CD), % | 55 |
Resistance to tearing MD (nail shank), N | 100 |
Resistance to tearing CD (nail shank), N | 90 |
Batten gauge | Declared Wind Uplift Resistance, PD (N/m2) | Zone Suitability |
?345 mm (maximum gauge, large format tiles) | Taped lap: 1539 | 1 to 4 (All aplications) |
Batten restrained lap: not test | - | |
?250mm (600mm slates) | Taped lap: >2500 | 1 to 5 (All aplications) |
Batten restrained lap: 1510 | 1 to 4 (All aplications) |