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Permavent Max: 50m x 1m
- Top of the range performance, suitable as a breather membrane for all domestic and commercial applications.
- Uniquely laminated for long lasting durability, tear resistance and integrity.
- Excellent water shedding and vapour transfer characteristics – keeps roofing timber dry and free from rot.
- Buy 3 for £67.50 Inc. VAT each and save 18%

Out of stock
Product Details
Permavent Max (50m x 1m)
Permavent Max (50m x 1m) is a versatile, top of the range breather membrane that out-performs all other membranes in its class. It is suitable for all cold, warm, hybrid and boarded roof designs.
Permavent is manufactured using unique bonding techniques adapted from the medical industry. Permavent’s exclusive laminating processes produce a multi-layer membrane with incredible tensile strength and superior water vapour transmission. For long-lasting protection of roofing timbers this underlay is hard to beat.
Features & Benefits:
- Â Â Â Top of the range performance, suitable as a breather membrane for all domestic and commercial applications.
- Â Â Â Uniquely laminated for long lasting durability, tear resistance and integrity.
-    Excellent water shedding and vapour transfer characteristics – keeps roofing timber dry and free from rot.
- Â Â Â Material: Multiple layers of polypropylene, in a specially laminated membrane.
- Â Â Â Brand: Permavent.
- Â Â Â Roll Size:Â 50 x 1m.
- Â Â Â Roll Weight: 7.1kg.
- Â Â Â Standards: CE Certified, compliant with BS 5250, BS 5534, BS 8000-6, BS EN 1991-1-4, BS EN 13859, and BS EN 13501-1.
Buyers notes:
Permavent Max: 50m x 1m can be made more efficient by the installation of Eaves Tray, 1.5m as this will channel water to run-off from the membrane directly into the gutter.
Product Delivery
Ashbrook Roofing offers free delivery for orders over £50 to United Kingdom postcodes excluding the Highlands, Islands and Ireland.
Delivery expectation for orders placed before 2.00pm (Mon - Fri) are:
STANDARD Delivery
You pay: £4.95
Delivery: 2-3 working days
For orders placed before 2.00pm (Mon - Fri)
FREE Delivery
On all orders over £50
Delivery: 2-3 working days
For orders placed before 2.00pm (Mon - Fri)
We are here to help you
Prior to shipment, we’ll let you know of our estimated date of delivery. Don’t worry if you have made other plans or find this inconvenient.
If you can let us know a day in advance we’ll work with you to find a better alternative.
And remember, if you need help, have any concerns, or require a more timely delivery of your product(s), then simply give our customer services team a call on 01629 828500.
Or alternatively email us at customerservices@ashbrookroofing.co.uk and we'll do our very best to help
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