Product Description
Obex Cortex 1200 EPDM Membrane - Class E is a high-performance EPDM membrane designed to create durable water and airtight seals around openings within the building envelope. Developed by Obex Protection Ltd, this flexible membrane provides a reliable solution for interface sealing in modern construction projects, helping improve weather protection and airtightness performance.
The Obex Cortex EPDM membrane is commonly used to create water and airtight seals around windows, doors, and curtain walling systems. Its highly flexible construction allows the membrane to accommodate movement while maintaining long-term sealing performance in demanding façade applications.
Suitable for residential, commercial, and industrial construction, the membrane can be installed using the recommended paste adhesive and primer system to achieve secure adhesion to a variety of substrates. The product helps protect the building structure from water ingress while supporting airtightness requirements within the building envelope.
Tested to EN 13501-1 and classified as Class E, the membrane provides dependable performance for a wide range of façade and interface sealing applications.
Key Features
- High-Performance EPDM Membrane: Durable EPDM construction designed for long-term weatherproofing and airtightness.
- Creates Water and Airtight Seals: Helps create water and airtight seals around critical building interfaces.
- Ideal for Window and Door Installations: Provides reliable airtight seals around windows, doors, and curtain walling systems.
- Class E Fire Classification: Tested to EN 13501-1 and classified as Class E.
- Suitable for Façade Applications: Designed for modern façade systems and building envelope installations.
- Compatible Adhesive System: Can be installed using approved paste adhesive and primer systems.
- BBA Approved System Support: Suitable for specification within projects requiring proven building envelope solutions.
Applications
- Airtight seals around windows
- Airtight seals around doors
- Window perimeter sealing
- Door perimeter sealing
- Curtain walling interfaces
- Façade applications
- Obex Cortex 1200 is an EPDM Membrane, Class E fire rated.
- These are supplied in 20M long rolls, available in widths ranging from 100-1500mm
- It has full BBA approval and is perfectly suited for all window and façade sealing applications.
- Creates water and airtight seals across construction interfaces like windows, doors and curtain walling systems
| Product Type | EPDM Membrane |
| Product Code | Obex Cortex 1200 |
| Brand | Obex |
| Length | 20M |
| Widths | 50mm - 1500mm |
| Thickness | 1.2mm |
| Fire Resistance | Class E |
| Service Temperature (approx) | -45°C to 130°C |
| Vapour Resistance | 300 MNs/g |
| Water Vapour Permeability | 50,000 mu |
| Delivery Terms | |
|---|---|
| Order Value (Ex VAT) | Delivery Charge (Ex. VAT) |
| £650 | Free Delivery |
| Below £650 | £16.00 |
Returns And Refunds
- You are free to cancel the order anytime before we send you an order confirmation email with the estimated delivery date.
- If you wish to return the product, please get in touch with us over email and we will advise accordingly within 14 days from the date of reciept
- We urge you to check the insulation for any damage before the driver leaves. If the product you received is damaged, please contact us immediately.
- For more information, please refer to our Return Policy

