OBEX CORTEX 0.5mm EPDM Membrane - Class E
OBEX CORTEX 0.5mm EPDM Membrane - Class E
OBEX CORTEX EPDM Membrane is a flexible membrane which is used to create water and airtight seals around openings such as windows, doors and SFS sections on construction projects. Cortex EPDM has excellent water resistance properties and is BBA approved for façade applications.
The use of CORTEX EPDM is limited under the England and Wales building regulations. Refer to the OBEX Technical team for further details.
Typical uses include;
- Weather & airtight seals around windows, doors and curtain walling systems
- Weather & airtight seals from SFS sections to the concrete frame
- Top of parapet walls
- Balcony waterproofing
Product Specifications:-
Widths
50mm - 1500mm
Length
20m
Thickness
0.5mm, 0.6mm, 0.75mm, 1.0mm, 1.2mm, 1.5mm
Technical Specifications:-
Harmonised standard
EN 13984
Fire Classification | EN 13501-1
E
Air Tightness | EN 12114
<0.1m³
Resistance to tearing (nail shank) | EN 12310-1
≥10N
Equivalent air layer thickness (Sd value) | EN 1931
37.5 m
Elongation at break (both directions) | EN 12311-2
≥ 300%
Durability against ageing | EN1296/EN 1931
Pass
3rd party certification
BBA Certificate No.17/5396
Watertightness | EN 1928
Pass – 2 kPa for 24 hours
Tensile Strength (both directions) | EN 12311-2
≥6MPa
Water Vapour Permeability | EN 1931
50,000µ
Vapour resistance | EN 1931
188 MNs/g
Vapour resistivity | EN 1931
25,000 MNs/gm
Service temperature (approx)
-45°C to 130°C
Product Data Sheet
The above information is based on current test data, health and safety information and application instructions supplied by our suppliers and manufacturers of the products. It is supplied for guidance and to the best of our knowledge is true and accurate. Customers should satisfy themselves to the suitability of the products in its intended use and no guarantee is given or implied as the conditions of actual use are beyond our control. If in doubt the customer should consult the designer of the project or the local building control.
Fire Stopping Shop, disclaim any liability for loss, damage or other expense which may arise from the use of this information, data or products refereed to and reserve the right to amend or change any details without notice. This statement does not affect your statuary rights.
Promotion closes @ February 28, 2026, 11:45:00 PM
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