A.T.S. is formulated to cover stains and smoke damage visible on acoustical ceiling tiles. Seals and covers water stains, graffiti, paint, pin marks, and rusting nail heads. Permanently bonds to the surface without compromising sound absorption and fire retardant value. A.T.S. works as a non-bleeding primer/sealer for sign painters, a non/grain raising primer for new wood, a base coat for wallpaper or vinyl wall coverings and as a base coat for galvanized metal.