Description
EPDM Membrane 1.2mm Air & Watertight Façade Membrane
EPDM Membrane is a 1.2mm thick air- and watertight sealing membrane designed for weatherproofing external façade connections, particularly around window and door installations. Manufactured from durable EPDM rubber, the membrane provides a flexible barrier against air and water ingress while accommodating movement between building elements. It is also suitable for use as a water barrier within foundation wall applications and conforms to EN 13984.

Key Features & Benefits
- 1.2mm thick EPDM membrane
- Air- and watertight performance
- Suitable for façade, window and door sealing applications
- Helps protect against water ingress and rising damp
- Compatible with bitumen
- Remains permanently flexible and elastic
- High tear resistance
- Good temperature resistance
- Good weather resistance
- Good UV resistance
- Resistant to alkali
- Resistant to micro-organisms
- Conforms to EN 13984
- Suitable for long-term external building envelope applications
Suitable Applications
- External window frame sealing
- External door frame sealing
- Façade connection detailing
- Cavity wall construction
- Ventilated façade systems
- Foundation wall waterproofing
- Protection against rising damp
- Under window sill and door sill installations
- External building envelope sealing
- Air and water barrier applications
Technical Information
- Product Type: EPDM sealing membrane
- Material: EPDM rubber
- Thickness: 1.2mm
- Air Tightness: Yes
- Water Tightness: Yes
- Bitumen Compatible: Yes
- UV Resistance: Good
- Weather Resistance: Good
- Temperature Resistance: Good
- Tear Resistance: High
- Flexibility: Permanently elastic
- Alkali Resistant: Yes
- Micro-Organism Resistant: Yes
- Standard: EN 13984
- Application Area: External façade and foundation detailing
Frequently Asked Questions
What is EPDM Membrane used for?
EPDM Membrane is designed for creating air- and watertight seals around windows, doors, façades and foundation wall connections.
Can this membrane be used below ground level?
Yes. The membrane is suitable for use as a water barrier in foundation wall applications and for protection against rising damp.
Is EPDM Membrane UV resistant?
Yes. The membrane offers good resistance to UV exposure and weathering, making it suitable for external construction applications.
Does the membrane remain flexible after installation?
Yes. EPDM Membrane remains elastic and flexible, helping it accommodate movement between adjacent building elements.
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