SGM Fast Set Thin-Set Mortar (Polymer Modified) is a latex-Portland cement mortar formulated to produce a rapid set time for the installation of ceramic, mosaic, pavers, quarry, and dimension stone (absorptive, semi-vitreous, and vitreous) tiles. This product enables an experienced tile setter to set and grout within two (2) to four (4) hours and open to traffic within six (6) hours. SGM Fast Set Thin-Set Mortar (Polymer Modified) is ideal for use in areas that require a minimum downtime or in cold temperature installation and tile repairs. The use of calcium aluminate cement and re-dispersible powder additives are used to accelerate set time, improve adhesion, provide greater bond strength, and resistance to impact or shock.