Zinsser Wallpaper Cover-Up paint is an all-in-one primer, sealer and stain blocker. Primer with high hiding that obliterates the wallpaper print with a smooth matt off-white finish. Cover-Up can be used under any coloured emulsion, unlike a regular emulsion paint which can cause wallpaper to bubble and blister, Zinsser Cover-Up seals the wallpaper protecting it from the moisture in the paint and once dry, this one-coat system creates a new surface that is easy to paint. Cover-Up also includes a stain blocker, seeping stains from smoke and damp residue are easily covered with no fear of re-emergence. Application with a brush or paint roller, touch dry between 2 & 4 hours and re-coatable in 4 hours.