Mapei Ultraflex 3 Thin-set mortar

Ultraflex LFT Rapid is a premium, fast-setting, non-sag, large and heavy tile mortar (formerly known as "medium bed mortar") and a thin-set large and heavy tile and stone mortar for interior/exterior floor, wall, and countertop installations. This mortar has a unique high dry polymer content, which provides excellent adhesion to the substrate and tile. Using MAPEI's High Hydration Cement Technology (HCT™), Ultraflex LFT Rapid offers superior drying characteristics for fast curing and does not contribute to efflorescence. Ultraflex LFT Rapid is FastTrack Ready™, allowing grouting in 3 to 4 hours.