Protite Promeric PU7 is a high performance polyurethane sealant that meets ASTM C920, Type S, Grade NS, Class 50, Use NT, M standards for flammability according to UL 94 HB test method. and has the ability to reduce the flow of liquid from the grout (Reduced-Bleeding, Reduced Fluid Migration), thereby reducing stains on walls and building frames. For sealing various waterproofing joints such as precast concrete joints. Cast-in-place concrete joints and joints around the edge of the jamb Good adhesion to various construction materials without the need for a primer, including wood, steel, aluminum, stone, plastic, fiberglass, concrete and mortar, tile and fiber cement board. Can be painted over when dry.