A polymer-modified, large & heavy tile mortar used for interior & exterior installations to set various large-sized coverings; ceramic, porcelain, granite, slate, marble, limestone, thin porcelain tiles, large porcelain panels, and dimensional stone tiles. Use over structurally-sound : properly prepared concrete, exterior grade plywood ( interior / day use only ), cementitious backer board, Bostik Ultra-Set Advanced, Bostik Black-Top, Bostik GoldPlus, and existing, well-bonded vinyl composition tile ( VCT ) or ceramic tile. May be used for vertical applications, uneven tile and stone thicknesses, or to minimize lippage. Approved for non-sag application, for tiles up to 12" x 24"
