Rustins quick dry stain block multi surface primer is a water based matt white stain blocker for interior and exterior use with excellent adhesion to wood plaster and previously painted surfaces it will seal all stains that may bleed through and discolour paint as a primer it provides excellent adhesion to ceramic tiles glass and melamine when dry it can be painted with any type of paint and undercoat it can be applied over asphalt bitumen crayon creosote graffiti nicotine rust soot tannin and