Ultraflex LHT SG is a standard-grade, non-sag, nonslump, polymer-modified, large-and-heavy-tile mortar and thin-set mortar for interior/exterior installations on floors, walls and countertops. It is used to install large-format and heavy tile/ stone, including porcelain tile, heavy-ribbed-back tile, brick pavers, dimensional tile and natural-stone tile. Ultraflex LHT SG is designed for use at 3/32" to 1/2" (2.5 to 12 mm) thickness to give better support under large-format tile. This mortar is formulated with Easy Glide Technology™ for ease of application and good adhesion to the substrate and tile.