Britain's best Breather Membranes
Our high performance breather membrane for use in construction and roofing breather membranes are fully certified and guaranteed to offer the best protection against condensation. Following extensive testing on our breather membrane by the British Board of Agrement (BBA) Permavent Breather membranes were fully certified for use in all roofing applications. Permavent is so good at controlling condensation that it is the only 3 layer roofing breather membrane to pass the air permeability test from the Building Research Establishment (BRE) and will offer the best option for use as a better alternative to brand leaders such as Tyvek, Klober and Roofshield when used as roofing felt.
Permavent roofing membranes easily out perform other heavier roofing underlays such as the tyvek breather membrane and the independent tests from the BBA show just how good our roofing felt really is. The example below shows how our lighter weight breather membrane is stronger and more flexible than our competitors heavier membranes.
As you can see from our chart, we have compared the old style of brand leaders such the tyvek breather membrane.
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Permavent
MAX |
Tyvek Supro |
Proctor Roofsheild |
Klober Permoforte |
| Base weight |
140 |
145 |
175 |
175 |
| Tensile strength |
245.5 |
275.5 |
230 |
324 |
| Elongation |
93% |
21% |
37.5% |
15.5% |
| Mail tear |
180 |
125 |
143 |
156 |
| Breathability |
1343 |
935 |
2409 |
1034 |
| Water tightness |
>600 |
237 |
114 |
>200 |
| Vapour resistance |
0.15 |
0.22 |
0.09 |
0.20 |
Complete details are available on our full comparison chart available by post or on www.permavent.co.uk. Complete results available on www.bbacerts.co.uk
Easy roof low pitch slating system
We have used our roofing and production expertise to develop the `easy roofing system? that will considerable enhance the performance of a slated roof. The Easy roof System allows any slate roof to be installed at a low pitch as well as increasing the air permeability, eliminating wind slate rattle and improving the looks of any slate roof.
"The Permavent Easy Slate system significantly improves the resistance of both natural and fibre cement slates to wind driven rain."
BRE (Building research establishment - test report 273-259)
Diamond GRP flat roofing system
Our considerable roofing and distribution expertise have combined to develop the Diamond GRP flat roofing system. Diamond GRP is guaranteed for 20 years and will provide excellent performance for many years more.
For more specific information about Diamond GRP flat roofing system please visit: www.diamondgrp.co.uk.
Accreditation
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BBA Certificate No. 05/4227 relates to all Permavent Breather Membranes and covers multi-use applications.
Detail Sheet 2: Permavent, Detail Sheet 3: Permavent-Max, Detail Sheet 4: Permavent-Eco.
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BBA Certificate No. 06/4311 relates to all Permavent Breather Membranes and covers multi-use applications.
Detail Sheet 2: Permavent, Detail Sheet 3: Permavent-Max, Detail Sheet 4: Permavent-Eco.
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NIAB. National Irish Agrement Board (NIAB) Certificate No.06/0244
for all Permavent Breather Membranes.
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Permavent Limited is proud to announce it's membership in the National Federation of Roofing Contractors (NFRC). For more details visit www.nfrc.co.uk.
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