Mapei - Keraflex RS Extra Smooth Large & Heavy Tile Mortar, Gray - 44 lb

Keraflex RS is a fast-setting, highly versatile, large-and-heavy-tile mortar and thin-set mortar for tile and stone installation on floors, walls and countertops. It is formulated as nonsag for walls and nonslump for floors, allowing tiles to be grouted in as little as 3 to 4 hours after installation. Keraflex RS is a polymer-modified, smooth and creamy mortar formulated with Easy Glide Technology™ for ease of application and offers excellent adhesion to substrates and tile. It can also be used as a mortar over uncoupling, crack-isolation, sound-reduction and waterproofing membranes.

• High-Transfer Technology™ for superior mortar-wetting properties

• For use over plywood and a variety of membranes

• Fast-setting formulation

• Extra smooth, creamy consistency for ease of application

• Easy mixing, handling and troweling properties

• Ideal for edge-leveling clip applications

• Non-sag formula for large-format and heavy tile/stone in wall applications

• Nonslump formula for large-format and heavy tile/stone in floor applications

• For bond coats up to 1/2" (12 mm) in embedded thickness

• Polymer-enriched for high performance