Permavent ECO breather membrane is manufactured using the very latest technology from the medical industry to encapsulate the highest grade hydrophobic film and produce the most breathable 3 layered breather membrane in Britain. Permavent membranes perform at such high levels that they compare only with higher weight membranes in the same way that steel and tungsten compare.
Permavent ECO is the only hydrophobic film breather membrane to be designated as Air-Permeable by the BRE/269-443 as well as being fully tested by the BBA and certified for use in all construction applications under certificate 05/4227 and similarly in the non-vented roofing application under certificate 06/4311. Over 6.5million metres of Permavent ECO was installed last year on commercial, local authority and domestic applications throughout the whole of the UK without a single complaint or rectification.
It is a legal requirement of the British Standards (BS5250) and therefore the building control department (LABC) that all breather membranes that are used to control condensation in the roof space must be tested and therefore covered by these certificates. The NHBC have indicated a preference toward the use of breather membranes with Air permeable qualities.
Below is a comparison chart that shows how Permavent ECO breather membrane compares with similar products. These results are from the BBA's independent tests.
Complete details are available on our full comparison chart available by post or www.permavent.co.uk. Complete results available on www.bbacerts.co.uk. *test variation
Dalpro and Jutadach products have the same performance as, Cromar vent3 classic, Harcon VPU, Mercury VapRfree, Grafter, TileR, Roof TX
Permavent ECO uses a special hydrophobic film that cannot become blocked by slate debris or suffer the reverse affect of static condensation.
The performance of many membranes is reduced when the layers are stuck together but the special 3-to-1 thermal bond of Permavent ECO creates a durable breather membrane that cannot delaminate.
High-grade materials combined with the worlds most advanced production shows that the lighter weight, strength and elasticity of Permavent ECO means that it can be used in any application to improve the performance of an existing membrane.
Permavent ECO is suitable for all types of roof construction including: cold non vented, warm roofs, traditional vented roofs and hybrid roofs (room in the roof).
Permavent ECO is also suitable for the Scottish roofing practice and is suitable as house wrap in timber frame construction.