SikaTile®-475 LHT Premium Set is a premium-grade, single-component large and heavy tile mortar that is ideal for installation of gauged (formerly “thin”) porcelain tile as well as large and heavy ceramic and porcelain tile and natural stone. This high-performance, flexible, polymer-modified mortar is formulated for ease of application and features up to 50% more coverage, extended open time and superior transfer properties to enhance back-buttering.