Before Caulking, Use Backer Rod To Help Fill Gaps And Openings In Pavement Cracks, Wall Joints, Foundations, Sidewalks And Driveways.The Gap Filler Helps Cushion And Insulate And Helps Prevent 3-Point Bonding.
 ▪  Provides A Sound Surface For Caulking Project

 ▪  For Use In Expansion Joints In Driveways And Sidewalks

 ▪  Moisture Resistant

 ▪  Mfg #WS31543

 ▪  Made In Canada