Polyurethane mortar joint sealant is a textured 1 component fast curing flexible material. Suitable for interior and exterior concrete crack application. Excellent adhesion to concrete, masonry, stucco, prepainted metal, glass, plywood, aluminum, steel, and many plastics, and composite materials. Construction grade polyurethane sealant permanently seals, waterproofs, and tuck points damaged and deteriorated mortar joints. Blends with surrounding mortar joints. Dries to a firm, flexible consistency. Standard caulk gun use. Covers 12 linear ft. in a 3/8" bead. Tack-free in 2 hours and fully cured in 5 to 8 days. 10 oz. tube.