For sag-slump resistant wall, floor and countertop installations of large-format and heavy tile and stone For setting large-format non-vitreous, semi-vitreous, vitreous and impervious ceramic and porcelain tiles, pavers and quarry tiles For setting most marble, granite and natural stone (see LIMITATIONS) Ideal for use with uncoupling membranes and sheet-applied waterproofing membranes For INTERIOR and EXTERIOR installations For institutional, commercial and residential floor and wall applications Meets or exceeds ANSI A118.4 E and ANSI A118.11 requirements