White cement-based adhesive with fast bonding properties, suitable for bonding all types of ceramic tiles, marble, granite, glass mosaic tiles, natural and artificial stone to wall, floor, and facade surfaces, exclusively on solid substrates (cement, lime, and concrete-based mortars), for both outdoor and indoor use. It offers excellent adhesion, high strength, and moisture resistance. Suitable for bonding on surfaces with pre-existing tiles as well as surfaces with underfloor heating. It can be used for paving pools and other structures filled with water within a system using the BK-HidroStop 2 waterproofing coating. It does not alter the natural color of the bonded material.