Description
EPDM Expansion Joint Membrane for Façades, Roofing & Curtain Walls
Our EPDM expansion joint membrane is a high-performance waterproofing solution designed for sealing façade joints, roofing transitions, curtain wall systems and structural movement joints. Manufactured from UV-resistant EPDM synthetic rubber, this flexible membrane provides long-term airtight and watertight protection in demanding external environments.
Designed for commercial and industrial construction applications, the membrane remains flexible under structural movement while resisting UV exposure, ozone, weathering and temperature fluctuations. This makes it ideal for use around façade interfaces, roofing details, cladding transitions and perimeter sealing applications where long-term durability is essential.
Compatible with ARBO® sealants and solvent-free membrane adhesive systems, the membrane is safe for use around solvent-sensitive painted finishes and can be installed both on-site and in factory environments.
For projects requiring faster peel-and-stick installation, see our Self Adhesive EPDM Membrane | Arbo Easy Stick GS 1.3mm.
What is EPDM Expansion Joint Membrane Used For?
EPDM expansion joint membrane is used to create flexible waterproof seals around areas exposed to structural movement and weather exposure. It helps maintain airtightness and moisture protection in external building envelope applications while allowing the structure to expand and contract naturally.
Typical applications include:
- Expansion joint sealing
- Curtain wall perimeter sealing
- Roofing edge and upstand detailing
- Window and door perimeter waterproofing
- Cladding transitions
- Air and moisture barrier continuity
EPDM Membrane Comparison Guide
| Material | UV Resistance | Flexibility & Movement | Waterproof Performance | Expected Lifespan | Typical Applications | Main Limitations |
|---|---|---|---|---|---|---|
| EPDM Membrane | Excellent | Excellent | Excellent | 40+ years | Façades, expansion joints, curtain walls, roofing transitions | Requires adhesive installation |
| DPM (Damp Proof Membrane) | Low | Poor | Good below ground | Medium | Ground damp proofing, foundations | Not designed for exposed external UV applications |
| Butyl Tape | Good | Medium | Good | Medium | Temporary sealing, overlaps, glazing details | Can degrade faster under constant UV exposure |
| PVC Membrane | Medium | Medium | Good | Medium to long-term | Some cladding systems and roofing applications | Less flexible under structural movement |
Why Choose EPDM Membrane for Façade Sealing?
Unlike standard damp proof membranes, EPDM membranes are specifically engineered for exposed external applications where flexibility and long-term weather resistance are critical.
Key benefits include:
- Excellent UV and weather resistance
- High flexibility for structural movement
- Airtight and watertight sealing performance
- Long service life expectancy of 40+ years
- Safe for use around solvent-sensitive finishes
- Suitable for roofing, façades and curtain wall systems
The membrane maintains performance even in demanding environmental conditions, making it a reliable choice for modern building envelope sealing.
Technical Characteristics
- Material: EPDM synthetic rubber
- Colour: Black
- UV Resistance: Excellent
- Ozone Resistance: High
- Weather Resistance: Excellent
- Movement Capability: Accommodates structural expansion and contraction
- Installation Method: Applied using solvent-free membrane adhesive
- Compatibility: Suitable with ARBO® sealants
Installation
Arbo EPDM Façade Membrane is typically installed using:
Always ensure substrates are clean, dry and properly prepared before installation. Follow manufacturer application guidelines for best results.
Frequently Asked Questions
Is this EPDM membrane suitable for curtain wall systems?
Yes. It is specifically designed for façade and curtain wall perimeter sealing applications.
Can it handle building movement?
Yes. The EPDM material is highly flexible and designed to accommodate structural movement and expansion joints.
Is it safe to use around painted surfaces?
Yes. The solvent-free adhesive system is suitable for use around solvent-sensitive finishes.
How long does EPDM façade membrane last?
When correctly installed, EPDM membranes typically provide 40+ years of service life.
