Backer Rod

Backer Rod and Sealant

backer-rods

     Backer Rod is simple to compress rope-like celled polypropene / polyolefin based mostly foam. It is embedded into a clean joint at the specified depth before including caulk / sealant. This Rod creates a good depth and supports the sealant/caulk permitting it to create the right shape (about 2x as wide as deep) and additionally prevents three sided adhesion (bond breaker).