ChemLink HBR Closed-Celled Backer Rod

Just prior to installing HBR, clean all joints per the sealant manufacturer's recommendations. Thoroughly remove any concrete form-release agents, curing compound residue, laitance, or any foreign materials. To ensure a good sealant bond, joints must be clean and dry when the new sealant is installed. Air compressors used for this purpose must be equipped with traps for removal of oil and moisture. Install HBR at the depth recommended by the sealant manufacturer with a blunt tool.