Choosing the Right EPDM Sealing Solution for Your Project
EPDM sealing products are widely used across construction, roofing, automotive, and industrial sectors, but not all adhesives serve the same purpose. Two of the most common options, EPDM and EPDM foam tape, serve very different purposes.
Understanding the differences between these materials and knowing when to use each ensures stronger seals, better performance, and longer-lasting results.
EPDM: A Durable Rubber Sealing Solution
EPDM is made from solid EPDM (Ethylene Propylene Diene Monomer) rubber. It is designed to provide a long-lasting, weather-resistant seal where strength and durability are essential.
Key properties of EPDM:
- Excellent resistance to UV rays, ozone, and weathering
- Remains flexible in extreme temperatures
- Highly resistant to water, steam, and many chemicals
- Long service life with minimal degradation
EPDM is available with or without adhesive backing. Non-adhesive versions require a compatible EPDM adhesive, which we also supply, allowing for greater flexibility in demanding installations.
Common uses for EPDM:
- Roofing membranes and flashing details
- Waterproof joints in construction and façades
- Industrial sealing applications
- Automotive and marine weatherproofing
- Long-term external seals exposed to the elements
EPDM is ideal where movement, exposure, and longevity are critical.
EPDM Foam Tape: Compression Sealing and Gap Filling
EPDM foam tape is a closed-cell or open-cell foam product made from EPDM rubber. Unlike solid EPDM , foam tape is designed to compress, allowing it to fill gaps, absorb vibration, and create airtight seals.
Key properties of EPDM foam tape:
- Compressible and flexible
- Excellent for uneven or irregular surfaces
- Provides thermal and acoustic insulation
- Resists moisture, UV, and ageing
- Lightweight and easy to install
EPDM foam tape is commonly supplied as a self-adhesive product, making it quick and easy to apply in sealing and cushioning applications.
Common uses for EPDM foam tape:
- Window and door sealing
- HVAC systems and ducting
- Electrical enclosures and cabinets
- Panel joints and expansion gaps
- Vibration and noise reduction
EPDM foam tape is best suited for applications where compression, insulation, or tolerance is required, rather than structural strength.
How to Choose the Right EPDM Product
Choose EPDM if you need:
- A long-term waterproof seal
- Resistance to harsh outdoor conditions
- Structural integrity with minimal compression
Choose EPDM foam tape if you need:
- A compressible seal for uneven surfaces
- Airtight or dust-proof joints
- Vibration or noise reduction
Selecting the correct product ensures optimal performance and prevents premature seal failure.
Installation Tips for Professional Results
Surface preparation
Always clean and dry surfaces before application. Remove dust, grease, and debris to maximise adhesion and sealing effectiveness.
Correct specification
Match the tape thickness, width, and adhesive type to the environment, temperature range, and expected movement.
Accurate installation
Avoid stretching EPDM during application. For foam tape, allow proper compression without over-crushing the material to maintain sealing performance.
Find the Right EPDM Sealing Solution
Both EPDM and EPDM foam tape offer outstanding performance when used correctly. Whether you need a robust waterproof barrier or a flexible compression seal, choosing the right EPDM product ensures reliable, long-lasting results.
