Closed-Cell Foam Concrete Expansion Joint Filler Roll

This is a roll of flexible, lightweight, closed-cell polyethylene foam expansion joint filler, commonly used in concrete construction to absorb expansion and contraction movements between concrete slabs. Designed to prevent cracking in driveways, sidewalks, and patios, this non-absorbent and chemical-resistant barrier is easy to form around curves and cuts easily with a utility knife. It is held securely in its rolled position by a metal retention staple.