OBEX CORTEX 0520FR Breather Membrane - Class B-s1,d0

SKU: 20.0520.001
Regular price £247.50 Exc.VAT
Available – Usually dispatched within 2–5 working days

Estimated Shipping Widget will be displayed here!

Returning an Item

If you're not completely satisfied with your purchase, you can request a return by completing our Returns Request Form. Our team will review your request and get back to you with the next steps.

Save More with Bulk Orders

Shop Here

Certified & Compliant Products

Shop

Committed to Sustainability

Delivering compliant fire protection and construction solutions with a reduced environmental impact.

Shop

Build Stronger Business Partnerships with FPDL Supplies

Join our Trade Program to access exclusive pricing and bulk order benefits.

Register for Trade Account

Description

The OBEX CORTEX 0520FR Breather Membrane - Class B-s1,d0 is a water-resistant, breathable external wall membrane, letting moisture escape while preventing condensation within the wall construction.

WHERE IT'S USED

Applied to sheathing board, concrete and insulation as a Class B external breather membrane for facades and other construction applications. Installed using the CORTEX 0825 Installation Kit (2 rolls 0824FR double-sided tape, 6 rolls 0823FR single-sided UV facade tape).

BUILD-UP

A breathable membrane conforming to EN 13859-2, black with white printing, watertightness rated W1.

KEY BENEFITS

- W1 watertightness rating (EN 13859-2) for demanding applications

- Class B-s1,d0 fire classification (EI60 fire test component)

- KIWA third-party approved (BAW-22-245-P-A-UK)

- 6 months UV exposure resistance

SPECIFICATION DATA

Fire classification: B-s1,d0 (EN 13501-1)

Standard: EN 13859-2

Width: 1500mm

Length: 50m

Thickness: 0.3mm

Watertightness: W1 (EN 1928)

Sd value: 0.1m (EN ISO 12572)

Tensile strength: Longitudinal 255N/50mm, Transverse 180N/50mm (EN 12311-2)

UV resistance: 6 months

Certification: KIWA Approval BAW-22-245-P-A-UK

Attachments

Delivery Charges

Multiple delivery options are available and shown at checkout, including Royal Mail and DPD services. Charges are calculated based on order size and destination. Standard and specialist delivery options are available depending on the product. Full delivery terms, lead times, and exclusions can be found on our Delivery Information page.

Return Policy

Standard stocked items may be returned within 14 days of purchase, subject to approval. All returns must be requested through our Return Request Form returns portal and items must be unused and in original, unopened packaging.

Opened, used, made-to-order, or specially manufactured products are non-returnable. Approved returns may be subject to a restocking fee of up to 30%.

Return shipping costs are the responsibility of the customer. Full details are available on Returns & Warranty Policy.

Disclaimer

FPDL Supplies do not manufacturer the products sold on our website.

While we aim to ensure that the product information on our website is correct, manufacturers may alter their product information. The information contained in this website is for general information purposes only and while we endeavour to keep the information up to date and correct manufacturers may alter their product information. FPDL Supplies make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose. Any reliance you place on such information is therefore strictly at your own risk.

In no event will we be liable for any loss or damage including without limitation, indirect or consequential loss or damage, or any loss or damage whatsoever arising from loss of data or profits arising out of, or in connection with, the use of this website.

Through this website you can link to other websites which are not under the control of FPDL Supplies. We have no control over the nature, content and availability of those sites. The inclusion of any links does not necessarily imply a recommendation or endorse the views expressed within them.

Every effort is made to keep the website up and running smoothly. However, FPDL Supplies takes no responsibility for, and will not be liable for, the website being temporarily unavailable due to technical issues beyond our control.

This statement does not affect your statutory rights.

The OBEX CORTEX 0520FR Breather Membrane - Class B-s1,d0 is a water-resistant, breathable external wall membrane, letting moisture escape while preventing condensation within the wall construction.

WHERE IT'S USED

Applied to sheathing board, concrete and insulation as a Class B external breather membrane for facades and other construction applications. Installed using the CORTEX 0825 Installation Kit (2 rolls 0824FR double-sided tape, 6 rolls 0823FR single-sided UV facade tape).

BUILD-UP

A breathable membrane conforming to EN 13859-2, black with white printing, watertightness rated W1.

KEY BENEFITS

- W1 watertightness rating (EN 13859-2) for demanding applications

- Class B-s1,d0 fire classification (EI60 fire test component)

- KIWA third-party approved (BAW-22-245-P-A-UK)

- 6 months UV exposure resistance

SPECIFICATION DATA

Fire classification: B-s1,d0 (EN 13501-1)

Standard: EN 13859-2

Width: 1500mm

Length: 50m

Thickness: 0.3mm

Watertightness: W1 (EN 1928)

Sd value: 0.1m (EN ISO 12572)

Tensile strength: Longitudinal 255N/50mm, Transverse 180N/50mm (EN 12311-2)

UV resistance: 6 months

Certification: KIWA Approval BAW-22-245-P-A-UK

FPDL Supplies Product Range

FPDL Supplies is a specialist trade supplier supporting construction and compliance-led projects across the UK. Our product range covers certified fire protection, fixings and fasteners, cable management, insulation, construction materials, PPE and safety wear, professional paints and decorating products, and tools and accessories.

Every product we stock is sourced from trusted manufacturers and selected for site performance — giving contractors, installers, and facilities teams the materials they need to work safely, efficiently, and in line with UK regulations and industry standards.

  • Reliable & Certified

  • Compliance-Ready Stock

  • UK-Wide Trade Delivery

Your Complete Source for Building & Safety Tools

Premium fire protection, fixings, insulation, safety gear, tools & more — all under one roof.