A-Plus® Gypsum Putty is a ready-mixed, all-purpose, water-based jointing compound suitable for a wide range of substrates like gypsum boards, fiber cement boards, wood, concrete, and other similar surfaces. It is used for non-structural joint filling, patching, and levelling surface irregularities like cracks, dents, nail holes, etc. It is specially formulated to be crack and shrink resistant and dries fast to a smooth, easily sandable finish.