Tacktile Keycoat is an acrylic latex polymer designed to enhance water resistance and improve flexural and impact strengths when added to cement-based products. Mortars mixed with Tacktile Keycoat become hard, tough, and durable, exhibiting exceptional abrasion resistance compared to unmodified mortars. It is highly recommended for preparing challenging substrates, improving adhesion and compressive strengths for subsequent coatings or tiles.