Soudal Silirub EPDM - Neutral Cure EPDM Silicone Sealant
Soudal Silirub EPDM is a high-quality, one-component, neutral-curing silicone sealant and adhesive specifically developed for use with EPDM membranes.
This black, low modulus, permanently elastic sealant offers excellent adhesion to EPDM substrates and various common building materials, making it ideal for bonding and sealing applications in both interior and exterior environments.
Its MEKO-free formulation ensures safe use with minimal emissions, while its UV and weather resistance makes it especially suitable for long-term outdoor applications.

Free Delivery
on orders over £100(ex. VAT, mainland UK only)

Free Help & Advice
Call 01355 222 777
Mon.-Fri 8:30am - 4:15pm, or email us

Next Day Delivery
Order Before 2:30pm for Same Day Despatch (terms apply)

Great Service
A proudly independent family business with 40 years experience
Key Features of Soudal Silirub EPDM
✔️ Specifically designed for bonding and sealing EPDM membranes to EPDM and various construction materials.
✔️ Neutral-curing and MEKO-free formulation ensures safe use on sensitive building substrates and surfaces.
✔️ Offers excellent UV resistance and remains permanently elastic for durability in outdoor environments.
✔️ Provides strong primerless adhesion to metals, plastics, glass and EPDM with easy application and tooling.
✔️ Supplied in eco-friendly foil packs to minimise waste on site and support sustainable working practices.
Specialist Silicone for EPDM Sealing and Bonding
Soudal Silirub EPDM is a high-performance silicone sealant and adhesive, expertly formulated for bonding EPDM membranes to themselves and to a wide range of traditional construction materials. Designed specifically for roofing, waterproofing, and façade systems, this neutral-curing sealant provides outstanding adhesion without the release of corrosive or aggressive by-products. Its compatibility with sensitive substrates makes it a trusted choice in environments where material integrity and performance are critical.
Long-Term Elasticity and Movement Tolerance
The sealant remains permanently elastic after curing, enabling it to accommodate natural movement in joints and membranes caused by temperature fluctuations and structural dynamics. This is especially vital when working with EPDM materials, which expand and contract regularly due to thermal exposure. The product’s low modulus formulation reduces stress on bonded joints, further supporting long-term reliability in dynamic construction settings.
Durable in Harsh Outdoor Conditions
Silirub EPDM offers excellent resistance to ultraviolet radiation, ozone, and varying weather conditions, making it ideally suited for outdoor applications where long-term durability is essential. Its colour stability ensures that the sealant retains its original appearance without discolouring or degrading over time, even in exposed environments. These features make it particularly effective in roofing systems and external joint sealing where performance and aesthetics are both priorities.
Outstanding Adhesion Without Primer
This professional-grade sealant delivers exceptional primerless adhesion to a wide range of substrates, including EPDM, metal, glass, aluminium, and certain plastics. Its smooth extrudability and easy tooling allow for clean, efficient application on site, reducing labour time and improving consistency. Whether used in new installations or repair work, Silirub EPDM provides a strong, flexible bond that stands up to environmental and mechanical stress.
Health-Conscious and Environmentally Safer
Silirub EPDM is formulated without MEKO, a common additive in silicones that has been associated with potential health risks. By eliminating this component, the product supports safer working conditions and contributes to a healthier on-site environment. Supplied in 600ml foil pack cartridges, the sealant also presents a reduced environmental footprint through minimised packaging waste, aligning with modern sustainability practices in the building industry.
Trusted Performance for EPDM Systems
Ideal for both residential and commercial construction projects, Soudal Silirub EPDM has become a preferred choice for contractors and specifiers working with EPDM-based systems. Its tailored formulation, superior adhesion, and resilience under demanding conditions ensure reliable long-term sealing and bonding performance, making it an essential component in modern waterproofing and roofing solutions.