Toupret Interior filler is an all purpose and ready mixed, in an easy to use squeezy tube. For filling cracks and holes up to 5mm deep. Easy to sand down this filler can be used to fill plaster, plasterboard, primed wood, cement, brick, masonry, stone and cellular concrete. Drying time: As a Surface Filler 1 hour, Holes and Cracks up to 5mm 3 hours. No Mixing Required.