Premium, Rapid-Setting, Large-and-Heavy-Tile Mortar with Polymer Mapei Ultraflex LFT Rapid is a premium, rapid-setting, nonsag, large-and-heavy-tile mortar (formerly known as “medium-bed mortar”) and thin-set mortar for large and heavy tile and stone for interior/exterior floor, wall and countertop installations. This mortar has a high content of unique dry polymer, resulting in excellent adhesion to the substrate and tile. Thanks to MAPEI’s High-Hydrated Cement Technology (HCT), Ultraflex LFT Rapid offers superior drying-out characteristics for quick curing and does not contribute to efflorescence. Ultraflex LFT Rapid is FastTrack Ready, allowing grouting in 3 to 4 hours. Nonslump for large-format and heavy tile and stone in floor applications For thicker bond coats from 3/32" to 1/2" (2.5 to 12 mm) Allows grouting in 3 to 4 hours Spec Sheet
