Mapecem Premix is a quick setting cement-based mortar designed for concrete repair and substrate preparation. It is mixed exclusively with water. It can resist high compression and cures completely in 24 hours, without cracking or shrinkage. When used properly, tiles can be installed after only 3 to 4 hours, and flooring (vinyl, wood, rubber, linoleum, carpet, etc.) after 16 to 18 hours. As it can be used for the construction of bases and thresholds from 1/4" to 4" (6mm to 100mm), it is ideal for shower bases.