Ready to use filler for use on interior surfaces, straight from the tub. Very easy to sand down and it wont flash or grin, so theres no need to spot prime. Can be used on new or renovated substrates, either unpainted or painted: gypsum plaster, plasterboards, 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. For Internal Use Max Depth: 10mm Paintable after 24Hrs No Need to Spot Prime Will Not Flash or Grin Easy to Apply Easy to Sand For Internal Use Max Depth: 10mm Paintable after 24Hrs No Need to Spot Prime Will Not Flash or Grin Easy to Apply Easy to Sand