Professional quality for repairs in plaster walls and ceilings Sets in 20-30 minutes and can be painted with any oil or latex-based paint Preferred by professionals artists and hobbyists Smooth formula provides great results every time. For interior applications. Ideal for hobby molds and casts. DAP-Professional quality for repairs in plaster walls and ceilings. Sets in 20-30 minutes and can be painted with any oil or latex-based paint. It is preferred by professionals artists and hobbyists. Tub contains 8 pounds. Warning: injurious to eyes. Causes skin burns. May cause eye skin or respiratory irritation.