A low odor aerosol that is a stain killer and ceiling touch-up paint in 1. Zinsser stain blocking primer has been incorporated into this new generation product. The flat white finish matches most new acoustical ceiling tiles and white ceiling paints. Its high volume, vertical spray tip quickly covers water stains, graffiti, nicotine, and smoke stains on ceilings. It's perfect for touch-up when you don't want to repaint the entire ceiling due to spot damage. If desired, Covers UP may be top coated with a ceiling paint in 2 hours. May be used under or over latex and oil base paints. Other uses include: Crown molding, valances, ceiling light fixtures, HVAC duct work and vents, overhead pipes and conduit. 13 oz. aerosol can covers approximately 25 sq. ft.