40mm Backer Rod

40mm Closed Cell Polyethylene Foam Backer Rod

Foam backer rod typically used in the glazing and construction industry, for filling expansion joints prior to using sealants. Poly backer rod can be used in many substrates, such as concrete, brick or block work and metals.

The foam backing rod helps to prevent a joint from failing and significantly reduces the amount of sealant being used. Our backer rod does not rot and is chemically neutral. Sold in cut lengths or full boxes.