OBEX CORTEX 0521FR Class B Self-Adhesive Breather Membrane - W1 - Breather Membrane
Verified by manufacturer 3 months ago
KIWA BDA
Certificate type
ISO 9001 Quality Management
Certificate type
Class B fire-rated, self-adhesive breather membrane engineered for external wall and façade applications where a breather membrane is required.
Application
Self-adhesive, Class B, breather membrane for use within external facades, typically applied directly to the sheathing board to prevent water ingress and allow vapour to escape.
Description
The OBEX CORTEX 0521FR is a Class B fire-rated, self-adhesive breather membrane engineered for external wall and facade applications. This advanced breather membrane integrates a fire-resistant, self-adhesive backing and breathable, and airtight layer, offering a fully compliant breather membrane in line all UK construction regulations.
Designed with a focus on ease of installation, superior performance, and compliance with construction standards, the OBEX CORTEX 0521FR breather membrane sets a new benchmark in the field of breather and vapour permeable membranes for external applications. Its innovative features ensure it stands out as the superior breather membrane option for professionals seeking reliable and effective building envelope solutions.
Key benefits:
- GOLDEN THREAD ALIGNMENT - Class B fire classified regardless of the substrate for full compliance with Reg 7.
- REDUCE WATER INGRESS ISSUES - Rigorously tested to EN 1928 achieving W1 water resistance for ultimate performance.
- EASIER PROJECT SCHEDULING - six months' UV resistance for optimum project scheduling flexibility.
- SUITABLE FOR OPEN CLADDING - Also available in plain black for the ultimate solution behind open rainscreen cladding.
- EASIER INSURANCE APPROVAL - Full 3rd party approval with internationally recognized KIWA BDA.
- LESS WASTE & DAMAGES - Excellent scuff and tear resistance with a highly durable outer coating.
- IMPROVED HEALTH & SAFETY - Ergonomically designed roll sizes to aid manual handling and reduce musculoskeletal issues.
- COMPLETE PEACE-OF-MIND - 20-year warranty for full confidence in the integrity of the product.
- PROMOTE YOUR OWN BRAND - Custom options available to elevate your brand’s visibility and enhance brand recognition.
- UP TO 30% QUICKER INSTALLATION - Split release liner for faster and improved installation with greater control and accuracy.
General information
Color | Black |
Finish | Coated Textured |
Material | Polyester Thermoplastic polyurethane (TPU) |
Shape | Other Rectangle |
Length | 25000 mm |
Width | 1100 mm 370 mm |
Height | 0.38 mm |
Warranty description | 20 year |
Uniclass | |
CAWS | H22/130 Breather membrane P10/65 Breather membrane P10/320 Breather membrane H92/785 Breather membrane H31/280 Breather membrane H30/350 Breather membrane H21/130 Breather membrane H31/55 Breather membrane H30/50 Breather membrane H22/20 Breather membrane H21/20 Breather membrane |
Specification data - Vapour-permeable sheets
Standard | To BS EN 13859-2. |
Third-party certification | KIWA BDA Agrément BAW-23-286-P-A-UK. |
Performance criteria | |
Water vapour properties | Water vapour transmission (Sd value) to EN ISO 12572, 0.1 m. |
Fire performance | To EN 13501-1, B-s1, d0. |
Tensile properties | To EN 12311-1, longitudinal: 255 N/50mm; transverse: 180 N/50mm.Guidance for specification option: Control values; consult manufacturer's literature for aged values. |
Class (minimum) | W1.Guidance for specification option: To EN 1928 Method A (2 kPa for two hours). |
Material | Polyester non-woven fabric with TPU layer.Guidance for specification option: Closed side adhesive: Acrylic. Liner: PP film. Manufacturer guidanceConsult manufacturer for further details if required. |
Form | Non-woven. |
Weight (minimum) | Manufacturer's standard.Guidance for specification option: Consult manufacturer for details. |
Thickness (minimum) | 0.38 mm. |
Flexibility at low temperature | To BS EN 1109 at -40°C, no cracks. |
UV resistance | Six months. |
Resistance to air penetration | To EN 12114, net leakage: 0 m³/h/m² (±100 Pa). |
Peel resistance | To EN 12316-2, before ageing: maximum peel: 10 N; average peel: 8 N. Guidance for specification option: Control value. To EN 12316-2, after ageing: maximum peel: 12 N; average peel: 9 N. |
Air permeability | To BS EN 12114, no leakage. |
Purpose | Self-adhesive external breather membrane/ vapour permeable air barrier for wall and façade applications. Guidance for specification option: For use within external facades, normally applied directly to sheathing board to prevent water ingress and allow vapour to escape. |
Width (minimum) | 1.1 m. 0.37 m. |
Roll length (minimum) | 25 m. |
PhysicalPropertiesColour | Black. |
Tear resistance | To EN 12310-1, longitudinal: 100 N; transverse: 106 N. |
Elongation to break | To EN 12311-1, longitudinal: 23%; transverse: 24%. Guidance for specification option: Control values; consult manufacturer's literature for aged values. |
Sustainability data
Material | Polyester Thermoplastic polyurethane (TPU) |
BIM objects
NBS BIM Object Standard
This BIM object has been authored to meet the requirements of the NBS BIM Object Standard.
Find out more about the NBS BIM Object Standard.
| Platform | Compatible | Version |
|---|---|---|
 Revit | - | 1 |
 IFC | - | 1 |
Third party certifications
KIWA BDA
Cortex 0521FR KIWA BDA Agrement Certificate
ISO 9001 Quality Management
ISO 9001 Certificate
Literature
OBEX CORTEX 0521FR Installation Guide
OBEX CORTEX 0521FR Class B Self-Adhesive Breather Membrane - W1 - TDS
OBEX CORTEX 0521FR Class B Self-Adhesive Breather Membrane - W1 - SDS
OBEX CORTEX 0521FR Class B Self-Adhesive Breather Membrane - W1 - DoP