This Zinsser Coverup is a low odour vertical aerosol that is a stain killer and ceiling touch-up paint in one Zinssers stain blocking primer technology is incorporated into this next generation product that offers a flat white finish which matches most acoustic ceiling tiles and white ceiling paints The Zinsser coversup is a great stain blocking primer for any ceiling surface It is the perfect touch up paint when you do not want to repaint the entire ceiling due to spot damage One coat of Coversup permanently blocks and seals most common ceiling stains The aerosol is designed to meet the demands of professional and larger home improvement projects The non-yellowing solvent-based formula dries in just 30 minutes and can be applied under or over any solvent-based or water-based topcoat When used as a primer CoversUp can be top coated with any paint in just two hours Covers 15m2 coverage per can on most surfaces Size 400ml Colour White