Mapei's Planislope RS Rapid-Set Sloping Mortar is designed to be compatible with a wide range of materials, including tile and natural stone. Its rapid-setting properties mean that it can be grouted within just a few hours, significantly reducing downtime. Additionally, Planislope RS is formulated to withstand moisture and temperature fluctuations, ensuring durability and longevity in high-traffic areas. It only needs mixing with water to produce a mortar of exceptional strength. Used for preparing a substrate before the installation of tile and stone, Planislope RS is designed for pre-sloping under waterproofing membranes and mortar beds in showers when quick turnarounds are desired.