Backer Rod

RACE Soft Backer Rod is an open cell polyurethane foam rod designed to control sealant depth in expansion joints, cracks, and construction gaps. It is commonly installed before applying silicone, polyurethane, and other elastomeric sealants to improve joint performance and reduce unnecessary sealant use. The open cell structure allows airflow behind the sealant, which can assist with curing in certain applications. Its highly compressible design makes it well suited for irregular joints and...

RACE Closed Cell Backer Rod is a non-absorbent polyethylene foam rod used to control sealant depth and provide a bond breaker in expansion joints, cracks, and construction gaps. It is commonly installed prior to applying silicone, polyurethane, and other cold-applied sealants to help improve joint performance and reduce unnecessary sealant use. Closed cell backer rod resists moisture absorption and remains flexible, making it suitable for exterior and interior applications where water exposure...