40mm Round Closed Cell Backer Rod

Backer rod is inserted into joints prior to sealants being applied to reduce the amount of sealant required. Backing rod also debonds the bottom of the joint ensuring that the joint sealant only adheres to the sides of the joint to accommodate correct joint movement. Backer rod should typically be slightly wider than the joint to ensure a snug fit.
40mm Backer Rod is supplied in 2m lengths in a pack of 135 lengths (270 l/m)