Permavent

Permavent Black Breather Membrane – 1m x 20m

SKU: ftpvb20
Permavent Black Breather Membrane – 1m x 20m
£29.65
incl. VAT
£29.65
Availability: 9 In Stock
Description
Permavent Black Breather Membrane – 1m x 20m use the very latest technology from the medical industry to encapsulate the highest grade hydrophobic film inside the very highest quality spun bond polypropylene layers. Moreover, unlike other companies, who simply stick the different layers together, Permavent membranes are manufactured in a single process that greatly improves the quality and integrity of our membranes. Additionally, this 3 in 1 process means that Permavent offer the best performing breather membranes in their class with superior strength, breathability, flexibility and durability.

Subtotal: £29.65
Permavent Black Breather Membrane – 1m x 20m
Permavent
Permavent Black Breather Membrane – 1m x 20m
SKU: ftpvb20 In stock
Price
£29.65incl. VAT
Qty
Subtotal £29.65
Permavent

Permavent Black Breather Membrane – 1m x 20m

£29.65
Next day delivery available
Order within the countdown for next day delivery.
*Excludes bank holidays

Product information

Product details

Description

Features, benefits and product information

Keep your roof protected. Keep your home dry.
When the rain falls and the wind howls, you need a breather membrane you can trust. The Permavent Black Breather Membrane (1m x 20m) gives you reliable, all-weather protection for any roofing project.

Moisture build-up ruins insulation, damages timber, and shortens a roof’s life. That’s why smart roofers choose Permavent—a trusted name in breathable membrane technology. This roll creates a waterproof but breathable barrier that stops rain from entering while letting trapped moisture escape. The result? A drier, longer-lasting roof.

Each 20m roll offers enough coverage for smaller roofing areas, repairs, or extensions. It’s lightweight, tough, and simple to handle. No need for special tools or complex instructions. Just roll it out, fix it in place, and move on with confidence.

Perfect for professional tradesmen and DIYers alike. Permavent Black Breather Membrane – 1m x 20m

  • Waterproof yet breathable for year-round protection

  • Works with both cold and warm roofs

  • Ideal for repairs, small builds, and loft projects

  • Made from durable, UV-resistant material

  • Lightweight and easy to install

  • Trusted by roofers across the UK

  • Roll size: 1 metre x 20 metres

Specifications

Technical details and product measurements

Brand
Permavent
Barcode
5060747290169
Size
1m x 20m

Downloads & documents

Product data sheets, fitting guides and supporting files

Helpful Information

Brand, delivery and support

About Permavent

Brand profile

About Permavent

Permavent is one of the UK's leading specialists in roofing membranes, breathable roofing underlays, low-pitch roofing systems and roof ventilation products. Established in 2003 and based in Weymouth, Dorset, the company has spent over two decades developing innovative roofing solutions that help contractors build stronger, longer-lasting and more energy-efficient roofs.

Known for its technical expertise and commitment to innovation, Permavent manufactures high-performance products for both new-build developments and roof refurbishment projects. Its extensive product portfolio includes breather membranes, vapour-permeable underlays, air-open roofing membranes, fire-rated membranes, roof ventilation products, dry fix systems, lead alternatives, eaves trays, and its award-winning Easy Roof System for low-pitch slate and tile roofs. Many products are independently tested and carry BBA certification, UKCA and CE marking, giving installers confidence in their long-term performance and compliance with UK building standards.

Permavent has earned a strong reputation throughout the roofing industry by focusing on condensation control, weather protection and ease of installation. Products such as Permavent APEX, Permavent BLACK, Permavent RED, Permavent DRY+, Permavent ECO and Permavent MAX ALL ZONES are trusted by roofing professionals across the UK for their durability, wind resistance and outstanding moisture management. The company continually invests in product development, specification support and technical guidance to help roofers achieve the highest standards on every project.

At Vents Direct, we stock a carefully selected range of Permavent roofing products, including breather membranes, roof ventilation accessories, eaves protection systems and other essential roofing components. Whether you're constructing a new pitched roof, replacing an ageing membrane or improving roof ventilation, Permavent products deliver the quality, reliability and performance trusted by roofing professionals throughout the UK.

Frequently asked questions about Permavent
Who are Permavent?

Permavent is a UK manufacturer specialising in roofing membranes, roof ventilation systems, dry fixing products and innovative roofing solutions for residential, commercial and heritage buildings.

What products does Permavent make?

Permavent manufactures breathable roofing membranes, non-breather membranes, roof ventilation systems, ridge and eaves ventilation, dry fixing systems, roofing accessories, fire-rated membranes and complete roofing systems.

Where is Permavent based?

Permavent is headquartered in Weymouth, Dorset, supplying roofing products throughout the UK.

Are Permavent products suitable for professional roofers?

Yes. Permavent products are widely used by professional roofing contractors, builders, architects and developers throughout the UK and are designed to meet current roofing standards.

Are Permavent roofing membranes breathable?

Many Permavent membranes are vapour permeable, allowing moisture vapour to escape while preventing water ingress. This helps reduce condensation and protects roof structures.

What is the difference between a breathable membrane and a non-breather membrane?

A breathable membrane allows water vapour to escape while remaining waterproof. A non-breather membrane is completely waterproof and is typically specified where traditional ventilation methods are required.

Is Permavent APEX different from standard breathable membranes?

Yes. Permavent APEX is an air-open and vapour-permeable membrane designed to provide enhanced condensation control and, in certain roof constructions, can eliminate the need for traditional high and low-level ventilation when installed in accordance with guidance.

Are Permavent products suitable for solar panel roofs?

Yes. Many Permavent roofing membranes are suitable for use with solar panel installations and modern roof constructions.

Are Permavent products BBA certified?

Many Permavent products have independent BBA certification alongside UKCA certification and testing to recognised British Standards.

Do Permavent products comply with UK Building Regulations?

Permavent products are developed to help meet current UK roofing standards, including BS 5250 and BS 5534 where applicable. Always follow the latest installation guidance.

Can Permavent membranes be left exposed during installation?

Yes. Many Permavent membranes are UV stable for up to three months during construction, although the roof covering should always be installed as soon as practical.

What are the benefits of using a roof ventilation system?

Roof ventilation helps control condensation, reduce moisture build-up, extend roof lifespan, improve timber durability and maintain a healthier roof structure.

Why do roofers choose Permavent?

Roofers choose Permavent for its proven product quality, technical support, innovative designs, independent certifications, ease of installation and long-term performance.

Can I install Permavent products myself?

Some products are suitable for experienced DIY users, but many roofing products should be installed by competent professionals to ensure compliance with building regulations and manufacturer recommendations.

Are Permavent products suitable for domestic and commercial roofs?

Yes. The range includes products designed for houses, apartment developments, schools, hospitals, commercial buildings and heritage roofing projects.

Which Permavent membrane should I choose?

The correct membrane depends on your roof design, pitch, ventilation requirements and project specification. Always check the technical data sheet or seek professional advice before installation.

Is Permavent a trusted roofing brand?

Yes. Permavent has become one of the UK's recognised roofing manufacturers through continuous innovation, technical expertise and products trusted on thousands of roofing projects nationwide.

Delivery

Delivery information

Accepting Your Delivery

Before accepting and signing for your delivery, make sure to check for any damage. If there is damage or fault with your package, please send an email to support@ventsdirect.co.uk

Free Delivery

We offer free next day (working day) delivery for all eligible orders over £50. For eligibility, orders must be placed before 14:00 from Monday to Friday. If you order on a Saturday, the order will be shipped on Monday for next day delivery.

Delivery Instructions

Please let us know at the time of your order if you would like to give any specific delivery requests by entering the relevant information into the note section of your order. Whilst we can’t guarantee couriers will take notice of all requirements, we’ll do our best to make sure they take note.

View full delivery information →
Refunds & Returns

Refunds and returns

Returning a Product

You must tell us if you are looking to return a product via email, mentioning your order number.

Delivery costs will not be refunded.

Returns must be made within 30 days of the delivery.

Return Address

Unit 2 Hillgate, Wilbury Way, Hitchin, SG4 0RY

Products That Cannot Be Returned or Refunded

Special order items may not be returned or refunded.

Any products that have been attempted to or have been installed cannot be returned or refunded either.

Damaged and Faulty Goods

The refund policy does not affect your statutory rights to care for products that have been delivered in error or damaged. We do everything within our power to ensure all products get delivered to you in perfect condition, but human error can occur.

View full refunds and returns policy →
Why Buy from Vents Direct?

Why Buy from Vents Direct?

At Vents Direct, we're specialists in roof ventilation products, supplying homeowners, roofing contractors and trade professionals across the UK with high-quality ventilation solutions they can rely on.

Whether you're installing roof tile vents, soffit vents, ridge ventilation, roof vent accessories or complete loft ventilation systems, we stock trusted products from leading manufacturers at competitive prices.

Proper roof ventilation is essential for preventing condensation, reducing damp and mould, improving roof airflow and helping extend the life of your roof. That's why we carefully select products that meet the demands of both modern and traditional roofing projects, ensuring long-lasting performance and compliance with UK building standards.

When you shop with Vents Direct, you'll benefit from expert product knowledge, fast dispatch, secure checkout and outstanding customer service from a dedicated UK-based team. With hundreds of ventilation products available, including tile vents, slate vents, eaves ventilation, cavity ventilation, ducting and ventilation accessories, we make it easy to find the right solution for your project.

Why customers choose Vents Direct

  • Huge range of roof ventilation products from trusted brands
  • Free next working day delivery on orders over £50 when ordered before 2pm*
  • Competitive prices with trade and DIY customers welcome
  • Expert advice to help you choose the right ventilation solution
  • Fast UK dispatch from our warehouse
  • Secure online ordering with friendly customer support
  • Quality products designed to improve roof airflow and reduce condensation

Whether you're replacing a single roof vent or completing a full roofing project, Vents Direct provides reliable products, expert guidance and fast delivery to keep your project moving.

Trade-quality products

Products selected for reliable performance and straightforward installation.

Trade-quality products

Products selected for reliable performance and straightforward installation.

Fast UK delivery

Clear delivery information and dependable nationwide service.

Secure checkout

Safe payment options and customer-focused support.

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