Willseal Coreseal Foam | Flexible Closed-Cell Joint Seal for Dynamic Applications
The Willseal Coreseal Foam is a lightweight, flexible closed-cell joint seal engineered to deliver watertight, airtight, dust-proof, and UV-stable performance for demanding infrastructure and commercial projects. Constructed from durable ethylene vinyl acetate (EVA) copolymer foam, Coreseal is designed to function as a primary seal in both horizontal and vertical joints. With the ability to accommodate up to ±25% joint movement, it ensures lasting performance and integrity across a wide range of dynamic conditions.
Key Benefits of Willseal Coreseal Foam
- Creates a watertight, airtight, and thermally insulating seal
- Closed-cell foam design withstands moisture and environmental stress
- Accommodates ±25% joint movement for dynamic installations
- Lightweight and compressible for fast, non-invasive installation
- Provides a UV-stable, dust-proof, and noise-reducing barrier
- Suitable for joints up to 10 inches wide in both horizontal and vertical applications
- Ideal for long-term performance in heavy-traffic and weather-exposed environments
Common Applications
Willseal Coreseal Foam is ideal for bridges, parking garages, stadiums, plaza decks, and highway longitudinal or transverse joints. Its durable closed-cell structure resists water and environmental degradation while maintaining flexibility for expansion and contraction.
Packaging and Performance
Delivered pre-formed for ease of installation, Coreseal reduces on-site labor, minimizes anchoring requirements, and ensures a monolithic, long-lasting joint seal designed to perform in heavy-duty, high-movement structures.
Product Properties
| Property | Value |
|---|---|
| Foam Color | Gray or Black |
| Storage Temperature | 68 °F (20 °C) |
| Temperature Stability | -40 to 130 °F (-40 to 54 °C) |
For a fire-rated vertical expansion joint solution, view the Willseal FR-V Sealant. More Tremco joint sealant systems are available at TremcoSealants.com.
