Flowsmooth is a blend of portland cement, high performance polymers, selected aggregates and proprietary admixtures designed to provide a smooth, level ?oor without the labor intensity of hand applied materials. This material will provide a hard surface in 4 hours with ?oor coverings able to be installed within 24 hours. Flowsmooth can be applied up to 1” in a single lift and up to 2” when extended with washed, clean and dried 3/8” pea gravel