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OBEX CORTEX 0521FR Class B Self-Adhesive Breather Membrane - W1 - Breather Membrane

Name: OBEX CORTEX 0521FR Class B Self-Adhesive Breather Membrane - W1 - Breather Membrane
Brand: OBEX Protection Ltd
SKU: 6d9DUE2jbLb2qLm4dmjZpY

Verified by manufacturer today

OBEX Protection Ltd

Third party certifications:

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.

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BOS

+44 (0)1905 337800 Website

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 3^rd 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	Pr_25_57_10_94 Vapour-permeable sheetsPrimary Pr_25_57_65_60 Plastics sheets
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. Water vapour resistance to BS EN ISO 12572, 0.55 MN·s/g.
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 guidance Consult 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.