Everbuild-Stain-Block-Spray-Everbuild-STAINSTP-p-Stainblock-is-a-spray-applied-heavily-pigmented-white-paint-which-permanently-prevents-existing-stains-from-water-mould-rust-nicotine-grease-soot-crayon-showing-through-subsequent-coatings-Quick-drying-overcoat-in-15-mins-p-Everbuild-STAINSTP-Stain-Block-Spray-400ml