Epoxy patching and surfacing compound that exhibits excellent bond strength and chemical resistance to a variety of acids, alkalies, salt solutions and oils. It is used to fill voids and bugholes in precast or poured-in-place concrete and other masonry surfaces. Repairs damaged concrete, fills narrow cracks, and can be used as a coving material for floor-wall transitions or lap joint areas. May also be used to repair weld seams and pits in metal.