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0500FR
ISM (Interface Sealing Membrane)
Class B – EN 13501-1
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. 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 0500FR Interface Sealing Membrane Class B Installation Guide
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
Fire Classification | EN 13501-1
B-s3,d0
Watertightness | EN 1928
Pass – 2 kPa for 24 hours
Tensile Strength | EN 12311-2
2490 N/50mm - 2079 N/50mm
Water vapour permeability (μ) | EN 1931
23,726 μ
Vapour resistance | EN 1931
56 MNs/g
Cold temperature flexibility | En1109/495-5
-40°C, no cracks
UV & heat ageing
Pass (watertightness, tensile, tear strength)
3rd Party Approved
BBA
Watertightness | EN 1928 (method A)
Pass – 2 kPa for 24 hours, 60 kPa for 24 hours
Air Tightness | EN 12114
<0.1m³
Resistance to tearing (nail shank) | EN 12310-1
MD 429 N, CD 452 N
Equivalent air layer thickness (Sd value) | EN 1931
12m
Elongation at break % | EN12311-2
MD 28% CD 31%
Calcium sulphate durability | EN 1947
Pass
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 |