Permavent Membranes

A range of quality breather membranes and non-breather membranes for all types of domestic and commercial construction.

Permavent offers the best selection of breather (vapour permeable) and non-breather (impermeable) membranes in the UK. We stock an extensive range of membranes, suitable for various applications including all types of domestic and commercial roofing and walling applications. Our range of membranes come in a variety of performance, tailored for all types of pitched roofing designs.

All of our membranes are developed and manufactured using next generation, technically advanced production methods. All membranes are fully CE certified and are rigorously tested to comply with European Harmonised standards. Our membranes are fully tested by BRE, are UKCA certified and accepted by NHBC.

Are you looking to specify Permavent or use one of our membranes on your next project? Why not order a sample or contact our team to find out more about our products, nationwide availability, or obtain technical support such as installation guidance and U value calculations.

Would you like to request a sample, book a CPD or find out more about Permavent Membranes? Please fill in the form and a member of our team will be in contact with you shortly.

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Permavent Apex

Permavent Apex is our industry leading and revolutionary 3 layer breather membrane which is UKCA certified and accepted by NHBC. Permavent Apex is both air and vapour permeable, which provides unique condensation control and eliminates the need for high or low level ventilation. Permavent Apex has also been endorsed by NHBC for use as an unsupported roof underlay in cold pitched without the need to provide any ventilation at high or low level. It also provides a secondary barrier to water ingress with a W1 head of water resistance.

Permavent Apex is unique to other similar products on the market where the membrane is available in both taped and untaped rolls. The integrated tape is a unique double sided tape system which offers installers speed and ease of installation, and cost savings, where the laps of the membrane are restrained in any weather condition using a 100mm head lap (As opposed to 150mm) and meet the BS5534 standard. This can reduce Apex membrane waste by up to 25%.

PERMAVENT APEX

Guarantee

Permavent is pleased to offer up to a 40 year guarantee on qualifying installations of its Easy Roof system. More details about the system can be found on this link. Guarantee is subject to Permavent’s Terms of Conditions, and requires the Permavent Dry breather membrane to be used during installation. In instances where Permavent Dry is not suitable for the project in hand, please contact our technical team and we will look to advise you on the best solution to guarantee Permavent products.

Product Comparison

Permavent offer a range of quality roof and wall membranes, with specific functionality for a range of uses. You can compare our range of membranes in the tool below. If you have a specific question you need support with, please get in touch.

Product Comparison

Breather Membrane

Select the products you would like to compare

Name	Permavent APEX	Permavent BLACK Breather Membrane	Permavent DRY+	Permavent ECO	Permavent GRAPHITE	Permavent MAX ALL ZONES	Permavent METAL	Permavent RED
Image
Description	Air open and vapour permeable membrane	High performance vapour permeable membrane	High Performance Membrane	Lightweight vapour permeable membrane	Highly durable vapour permeable membrane	High Performance vapour permeable Membrane	Condensation Control for Metal Roofing	Ultra Strong vapour permeable Membrane
Features	Integrated tape (untaped option available) BBA Certified No need for ventilation	Highly breathable Black on both sides Value membrane	High performance construction membranes Vapour permeable Integrated tapes, suitable in all UK wind zones	Low cost membrane Versatile	Highly durable Excellent tensile strength Excellent tear resistance	Suitable for all wind zones regardless of ﬁtting method Universal	For standing seam and fully supported metal roofing	Superior tensile strength Superior tear resistance For use on any types of roofing/walling applications
Weight, g/m²	180	120	220	90	130	150	440	160
Water tightness, class	W1	W1	w1	W1	W1	W1	W1	W1
Water vapour transmission (sd), m	0.01	0.02	0.02	0.02	0.02	0.02	0.02	0.02
Maximum tensile force (MD), N/50mm	330	300	490	260	245	300	320	350
Maximum tensile force (CD), N/50mm	270	200	310	170	175	200	200	240
Resistance to tearing MD (nail shank), N	210	120	260	100	130	100	150	140
Resistance to tearing CD (nail shank), N	210	160	385	120	140	100	200	230
Elongation at max. tensile force (MD), %	56	70		60	50	60	75	70
Elongation at max. tensile force (CD), %	68	60		70	60	70	100	70
Taped Lap	1-5	1-5		1-5	1-5	1-5		1-5
Batten Lap	1-3	1-2		1	1-3	1-5
UV Stability, months			3
Acoustic damping value, db							8

Permavent Non-Breather 120

Permavent are pleased to announce the launch of Permavent Non-Breather 120. Permavent Non-Breather 120 is a technologically advanced non-breather membrane which can be laid directly over sarking or unsupported, draped between rafters. It is heat and UV safe, and exceeds the standards set in BS 5534 so can be installed with unrestricted use in zones 1-5. Permavent Non-Breather membrane is entirely air and watertight, with a W1 head of water resistance and is appropriate for use on all types of domestic and commercial roofing and walling applications, including cold vented roofs, warm vented roofs, traditional hybrid and fully boarded applications.

PERMAVENT NON-BREATHER

Fire Rated Membranes: Skytech PRO XL and Safeshield XT Reflect

Alongside our range of versatile membranes, we are pleased to offer an additional two A2 Fire rated membranes for use in walling and roofing applications. These membranes have been vigorously tested and certified, and can greatly enhance the fire safety of any dwelling by containing a fire prior to an uncontrollable spread through cavity gaps and similar. These membranes boast an A2 limited combustibility fire rating, which is the closest standard achievable to being classified as an A1 non combustible fire rated product.

Safeshield: Safeshield XT Reflect is an A2-s1, d0 fire rated construction membrane for the use in high rise, high risk, offsite and modular construction projects. It is the UK’s most competitive walling membrane and alongside its A2 fire classification, Safeshield boasts an impressive W1 head of water resistance, has enhanced UV performance and superior thermal benefits with its reflective material.

Skytech: Skytech PRO XL is an A2-s1, d0 insulating breathable membrane. It offers superior thermal, waterproof, soundproof and airtight properties and for an insulating breather membrane is very thin at only 13mm. It is suitable for roofing and façade applications including high rise and high risk buildings over 18m. The innovative installation of a thatched roof utilising Skytech instead of traditional fire boards has been recognised for its achievements and shortlisted for a Pitched Roofing award.

Case Studies

If you’ve used Permavent products before, we’re confident that you will attest to the highest of quality in all of our products. However, if you’ve never used our products before, we have a host of case studies from a diverse range of projects across the UK; some of which have been nominated for industry leading awards.
Our list of case studies is ever expanding, so keep checking back on this page to see the latest project Permavent has been involved in.

Case studies

Westfield House

A Grade II listed building undergoing significant renovation, supported by Cadw Conservation, Bat Conservation, DEP Architects and Bridgend Council.

Batchcott House

A thatched-roof strip and re-roof, incorporating SKYTECH PRO XL A2-s1, d0 fire rated reflective membrane.

Tyning Meadows – New Build

An Easy Roof System installation on 10 large contemporary houses with low pitch slate roofs.

Brecon New Build Developments

120 new homes and apartments with natural slate roofs.

ALL CASE STUDIES

Would you like to request a sample, book a CPD or find out more about Permavent Membranes? Please fill in the form and a member of our team will be in contact with you shortly.

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Permavent Membranes

A range of quality breather membranes and non-breather membranes for all types of domestic and commercial construction.

Would you like to request a sample, book a CPD or find out more about Permavent Membranes? Please fill in the form and a member of our team will be in contact with you shortly.

Permavent Apex

Guarantee

Product Comparison

Product Comparison

Breather Membrane

Select the products you would like to compare

Permavent Non-Breather 120

Fire Rated Membranes: Skytech PRO XL and Safeshield XT Reflect

Case Studies

Case studies

Westfield House

Batchcott House

Tyning Meadows – New Build

Brecon New Build Developments

Would you like to request a sample, book a CPD or find out more about Permavent Membranes? Please fill in the form and a member of our team will be in contact with you shortly.