Closed Cell Foam Backer Rod

The purpose of foam backer rod is to act as a filler material, allowing for less sealant to be used while preventing air and moisture from entering gaps and joints. It is commonly used in applications such as sealing gaps in log homes, around windows and doors, as well as in expansion joints and concrete joints.

Foam backer rod is available in a range of sizes to fit different applications, and is typically easy to install by simply inserting it into the gap or joint. Once in place, backer rod can be covered with caulk or other sealant to create a tight, waterproof seal.