ProForm? All Purpose Joint Compound is a vinyl base ready mix joint compound for the professional that may be used directly from the container. All Purpose Joint Compound is designed for tape application, fastener spotting and complete joint finishing of gypsum board. It can also be used to repair cracks in plastered walls, to texture surfaces and to laminate gypsum board to other surfaces such as masonry or other gypsum board. It contains enough binder to secure the reinforcing tape and develops its strength and hardness by drying.