Rally Sunflex Expansion Joint Foam - High Performance Compression Sealant Roll

This expansion joint foam filler is a versatile, high-performance solution for managing movement gaps in concrete slabs, roads, bridges and buildings. Made from closed-cell, cross-linked polyethylene foam, it compresses to absorb thermal expansion, ground shifts and vibration—helping prevent cracks and long‑term structural damage. The zipped edge allows for precise, easy trimming, while an optional adhesive backing simplifies positioning and speeds installation.

Durable and waterproof by design, the closed-cell construction resists water ingress, dirt and breakdown, making it ideal for both new construction and repair work. It conforms to varying joint widths, works seamlessly with common sealants and fillers, and reduces maintenance needs by cushioning movement and protecting exposed edges. A practical choice for contractors and engineers seeking a reliable expansion joint solution that extends service life and minimizes repair costs.