13mm 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.
13mm Backer Rod is available in a 50m roll