CRL 7/8" Open Cell Backer Rod - 900 Foot Roll

The CRL Open Cell Backer Rod is a versatile and highly compressible polyurethane foam designed for optimal sealant joint backing, compatible with both cold-applied and hot-pour sealants.
Its open-cell structure expertly adapts to irregular or damaged joints without the risk of outgassing, making it ideal for high-performance sealants like silicones and urethanes.
Available in diameters ranging from 5/8” to 2” (16 to 51 mm), this product effectively controls sealant depth and functions as an efficient bond breaker.
For best results, use in vertical and horizontal wall joints, avoiding horizontal traffic surfaces, and ensure proper size selection to maintain a tight fit.
Proper joint preparation and storage guidelines should be followed to ensure optimal performance.