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0500FR
ISM (Interface Sealing Membrane)
Class B - EN 13501-1
A top-performing, fire-classified EPDM-Alternative membrane that has been specifically designed for creating water and airtight seals around windows, doors, curtain walling systems, SFS sections to concrete frames, and balcony waterproofing. Read more
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3rd Party Certified
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Class B
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EN 1928 - EN 13984
Downloads
OBEX CORTEX BBA Certificate
OBEX CORTEX 0500FR Interface Sealing Membrane Class B Installation Guide
OBEX CORTEX 0500FR Interface Sealing Membrane Class B TDS
OBEX CORTEX 0500FR Interface Sealing Membrane Class B SDS
OBEX CORTEX 0500FR Interface Sealing Membrane Class B DoP
Product Description
OBEX CORTEX 0500FR Class B Interface Sealing Membrane is a top-performing, fire-classified membrane that has been specifically designed for creating water and airtight seals around windows, doors, curtain walling systems, SFS sections to concrete frames, and balcony waterproofing.
This Interface Sealing Membrane has been approved by BBA, a third-party organization that ensures its quality and reliability. It achieves Class B-s3,d0 – EN 13501-1 fire classification, making it suitable for use on relevant buildings above 18m.
OBEX CORTEX 0500FR Class B Interface Sealing Membrane works seamlessly with OBEX CORTEX 0771FR Class B Paste Adhesive, together ensuring a robust, airtight seal between two substrates.
This membrane is perfect for a wide range of applications where a compliant fire-classified EPDM-alternative is required.
Typical Uses
- 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
- Many other applications where a robust Class B EPDM-alternative is required
Product Specs
Widths
50mm - 1500mm
Length
20m
Thickness
0.5mm
Technical Specs
Harmonised Standard |
EN 13984
3rd Party Approved
BBA Certificate No.17/5396
Fire Classification | EN 13501-1
B-s3,d0
Watertightness | EN 1928 (method A)
Pass – 2 kPa for 24 hours, 60 kPa for 24 hours
Watertightness | EN 1928 (method B)
Pass – 60 kPa for 24 hours, 500kPa for 72 hours
Air Tightness | EN 12114
<0.1m³ net leakage
Tensile Strength | EN 12311-2
MD 2490 N/50mm, CD 2079 N/50mm
Resistance to tearing (nail shank) | EN 12310-1
MD 429 N, CD 452 N
Water vapour permeability (μ) | EN 1931
23,726 μ
Equivalent air layer thickness (Sd value) | EN 1931
12m
Vapour resistance | EN 1931
56 MNs/g
Elongation at break % | EN12311-2
MD 28% CD 31%
Cold temperature flexibility | En1109/495-5
-40°C, no cracks
Calcium sulphate durability | EN 1947
Pass
UV & heat ageing
Pass (watertightness, tensile, tear strength)
Passive house rating
A+
Product Order Codes
| Product Codes | Product Description | Width | Length | Box Quantity |
|---|---|---|---|---|
| 20.0500.001 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 50mm | 20m | 1 |
| 20.0500.008 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 100mm | 20m | 1 |
| 20.0500.016 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 150mm | 20m | 1 |
| 20.0500.023 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 200mm | 20m | 1 |
| 20.0500.029 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 250mm | 20m | 1 |
| 20.0500.035 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 300mm | 20m | 1 |
| 20.0500.042 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 350mm | 20m | 1 |
| 20.0500.046 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 400mm | 20m | 1 |
| 20.0500.049 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 450mm | 20m | 1 |
| 20.0500.051 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 500mm | 20m | 1 |
| 20.0500.054 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 550mm | 20m | 1 |
| 20.0500.058 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 600mm | 20m | 1 |
| 20.0500.061 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 650mm | 20m | 1 |
| 20.0500.064 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 700mm | 20m | 1 |
| 20.0500.065 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 750mm | 20m | 1 |
| 20.0500.067 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 800mm | 20m | 1 |
| 20.0500.068 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 850mm | 20m | 1 |
| 20.0500.069 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 900mm | 20m | 1 |
| 20.0500.071 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 950mm | 20m | 1 |
| 20.0500.072 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 1000mm | 20m | 1 |
| 20.0500.094 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 1050mm | 20m | 1 |
| 20.0500.073 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 1100mm | 20m | 1 |
| 20.0500.074 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 1150mm | 20m | 1 |
| 20.0500.075 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 1200mm | 20m | 1 |
| 20.0500.076 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 1250mm | 20m | 1 |
| 20.0500.077 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 1300mm | 20m | 1 |
| 20.0500.078 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 1350mm | 20m | 1 |
| 20.0500.079 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 1400mm | 20m | 1 |
| 20.0500.080 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 1450mm | 20m | 1 |
| 20.0500.081 | OBEX CORTEX 0500FR Interface Sealing Membrane - Class B-s3,d0 | 1500mm | 20m | 1 |