Mapei Ultraflex LFT Rapid Set Grey Thinset Tile Mortar 50lb

Premium, Rapid-Setting, Large-and-Heavy-Tile Mortar with Polymer. Ultraflex LFT Rapid is a premium, rapid-setting, non-sag, 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. - Mold/Mildew Resistant: Yes - UV Stable: Yes - Additive Required: No - Use Over Cement Backer Board: Yes - Use Over Exterior Grade Plywood: Yes - Use Over Concrete: Yes - Use with Steam Shower: Yes - Dry Time: 3-4 hours - Pot Life: 30 minutes - Application Temperature Range: 40-95 deg. F/ 4-35 deg. C