Backer Rod 3/8" x 900' Open Cell

Foam Backer Rod is a non-gassing backer rod used as backing for elastomeric and other applied caulking sealants that controls the depth of the applied sealants and ensures cross-sectional hour-glass configuration. Commonly used in expansion/contraction joints in concrete and precast concrete walls, floors, partitions, bridge construction, parking decks, curtain walls, glazing, log home construction, highway construction and pavement maintenance.