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Obex Cortex 0500FR Interface Sealing Membrane - 50mm x 20M

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(incl VAT) £53.64 £48.77
-10%
(excl VAT) £40.64
Estimated Delivery Date Apr 02, 2026 - Apr 03, 2026
No deliveries on weekends or holidays.
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Obex Cortex Interface Sealing Membrane (ISM) system is a high-performance, Class B rated EPDM-alternative designed for construction projects. This innovative sealing system is engineered to create water and airtight seals around windows, doors, and curtain walling systems, ensuring the integrity and compliance of modern building façades. As the first and only ‘EPDM-alternative’ to achieve a fire classification, the Obex Cortex system provides a superior solution for critical sealing applications.

Key Features

  • Superior Fire Performance: The system is rigorously tested according to EN 13501-1, achieving excellent fire classification ratings. Key products include the Obex Cortex 0500FR Class B Interface Sealing Membrane.
  • BBA Approved: The Obex Cortex membrane system has full BBA approval for façade applications. This certification provides independent verification of its performance and suitability for a wide range of applications, giving specifiers and installers complete confidence.
  • High-Performance EPDM-Alternative: This fire-classified membrane is the modern EPDM-alternative, offering enhanced safety without compromising on the flexibility and durability required to form effective weather and airtight seals. 

Applications

Obex Cortex 0500FR Interface Sealing Membrane is perfectly suited for all window and façade sealing applications where performance and fire safety are paramount.

Typical uses include:

  • Water and airtight seals around windows, doors and curtain walling systems;
  • Water and 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.
Delivery Terms
Order Value (Ex VAT) Delivery Charge (Ex. VAT)
£650  Free Delivery
Below £650  £16.00

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Delivery Terms
Order Value (Ex VAT) Delivery Charge (Ex. VAT)
£650  Free Delivery
Below £650  £16.00

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