TOUPRET Fine Surface Filler offers an exceptionally smooth finish that helps to enhance the appearance of paint finishes. No need to sand or spot prime. Supplied ready-to-use for interior surfaces. It can be used on new or renovated substrates, either unpainted or painted gypsum plaster, plasterboard, old painted surfaces, cement, concrete, cellular concrete, breeze blocks, bricks and stone. Ready to overpaint in 8 hours.