TOUPRET Interior Filler offers a one-coat fill and can be filled to any depth. With no need to spot prime, it's easy to sand and won't flash or grin, shrink or slump. Suitable for internal use and sets in 30-40 minutes. 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. Can be painted over in 12-24 hours. Overcoat with any conventional paint or wallpaper.