CRL 1/2" Closed Cell Backer Rod - 2500 Foot Roll

The CRL Closed Cell Backer Rod is a top-notch solution in sealant application, offering easy control of sealant thickness and ensuring optimal joint design.
Featuring a non-bonding surface, this polyethylene foam eliminates the need for additional bond breakers and is compatible with all cold-applied sealants.
Available in diameters ranging from 1/4" to 2" (7 to 50mm), it prevents water absorption and promotes the desired "hourglass" shape for joint sealants.
Perfect for expansion/control joints, it is essential to select the correct size, ensuring the backer rod is 25-50% wider than the joint for a snug fit.
Proper storage and joint preparation are crucial, with installation requiring careful adherence to guidelines for optimal performance.
Avoid using with hot-applied sealants above 160ºF (71ºC) to maintain product integrity.