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Permavent Eco Breather Membrane 50m x 1.5m
SKU
PERMECO50X1.5
- One of the best performing breather membranes, offering superior strength, breathability, flexibility and durability.
- Uniquely laminated for long-lasting durability, tear-resistance and integrity.
In Stock
£59.95
Inc. VAT
Your pre ordered item will be delivered within 5-10 working days.
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Product Details
Permavent Eco Breather Membrane: 50 x 1.5m
Permavent ECO (50m x 1.5m) is a top-quality breather membrane with a technical specification to back it up.
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.
This breather membrane has excellent water shedding and vapour transfer characteristics, keeping timbers dry, free from rot in both domestic and commercial environments.
| Specification | Value |
| Weight, g/m² | 90 |
| Water Tightness (Class) | W1 |
| Water Vapour Transmission (sd), m | 0.02 |
| Max Tensile Force (MD), N/50mm | 200 |
| Max Tensile Force (CD), N/50mm | 110 |
| Elongation at Max Tensile Force (MD) % | 80 |
| Elongation at Max Tensile Force (CD) % | 60 |
| Resistance to tearing MD (nail shank), N | 90 |
| Resistance to tearing CD (nail shank), N | 125 |
Permavent Eco conforms to a number of industry standards including BS 5534:2014, BS 5250, BS EN 1991 1-4 amongst others, and is CE Certified. Further details can be found in the data sheets below.
This roll is 50m x 1,5m with a coverage of 75m² and should be fitted in accordance with BS 5534:2014. Permavent Eco should be installed with the logo uppermost, horizontally across the roof.
Minimum Horizontal Laps
| Rafter Pitch | Not Fully Supported | Fully Supported |
| 12.5° - 14° | 225mm | 150mm |
| 15° - 34° | 150mm | 100mm |
| 35° and above | 100mm | 75mm |
This breather membrane is suitable for use in wind zones 1-4 with both battened lap (250mm batten gauge) and taped lap.
It can be used on cold roofs, cold vented roofs, traditional hybrid roof, and Scottish and Fully boarded applications. It is LABC assured.
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: £3.95
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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