Polycell Stain Stop is a highly pigmented paint, which permanently prevents existing stains reappearing through paint. It provides one coat coverage over water stains, grease, nicotine, crayons, rust and soot. Suitable for plaster, stone, masonry, plasterboard and wood. Drying time: Surface dry in 2-3 hours. Size: 1 litre. Container type: Tin.