Mapei Keraflex RS Extra Smooth Mortar for Large Format Heavy Tiles, Grey - 44 lb

Keraflex RS is highly versatile and fast-setting, and can be used as a large format heavy tile mortar and a thin-set mortar for tile and stone installations on floors, walls, and countertops. Its non-sag wall and non-slip floor formula allows tile grouting within 3 to 4 hours of application. Keraflex RS is a polymer-modified, smooth, creamy mortar formulated with Easy Glide Technology for easy application and provides excellent adhesion to the substrate as well as the tile. It can also be used as a mortar on uncoupling, crack-bridging, sound-reducing, and waterproofing membranes.