ROOF X TENDER® 300 Rubber Roof Seal™ WB is a liquid rubber elastic coating for use in the restoration of existing roof systems. This highly elastic coating has exceptional flexibility, elongation and tensile strength. It provides a heavy duty protective layer over existing membranes forming a seamless barrier that will keep your building dry. Its elastomeric properties and superior bonding ability produce an outstanding base coat of protection that expands and contracts with roof’s surfaces to resist peeling, cracking and checking. ROOF X TENDER® 300 Rubber Roof Seal™ WB can be applied to modified bitumen, built up roofing, asphalt, metal and concrete surfaces. DO NOT ALLOW STORED PRODUCT TO FREEZE.