• Non-combustible membrane
  • Non-combustible membrane
  • Non-combustible membrane
  • Non-combustible membrane
  • http://www.permavent.co.uk/permafol/


Britain's Best Breather Membrane

Our high performance breather membranes, for use in construction and roofing, are fully certified and guaranteed to offer the best protection against condensation. Permavent breather membranes were fully certified for use in all roofing applications.
Permavent breather membrane is good at controlling condensation that it is the only 3 layer roofing 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 breather membrane to our rival brand leaders such as Tyvek, Klober and Roofshield (when used as roofing felt).


Tyvek Supro Proctor Roofsheild Klober Permoforte
Base weight 140 145 175 175
Tensile strength 254.5 275.5 230 324
Elongation 93% 21% 37.5% 15.5%
Nail 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 Systems - Low Pitch Slating

We have used our roofing and production expertise to develop the `Easy Roof Systems' which will considerably 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 look of any slate roof. 

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 more years.

For more specific information about Diamond GRP flat roofing system please visit: www.diamondgrp.co.uk.



Permavent Ltd. Easy Roof System. Registration No. EWS202.


NFRC membership

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.


FREE Free Roof Pitch Indicator or sample pack
Free CPD seminars
Free CPD seminars available. Click here for registration.
Easy Roof System
Visit Diamond GRP website
View Easy System fitting instuctions
Free download CAD drawings


Following the success of the Queen’s award winning Easy Verge, here at Permavent we are proud to announce the launch of the recently developed Easy VergeTrim. This latest addition to the Easy Roof System has been specially designed to meet the requirements of the Scottish and refurbishment markets.

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