When using a special mixture, it is prepared according to the instructions. If the floor is poured with cement mortar, prepare, taking three parts of the sand, adding cement and water. All this needs to be constantly interfered. The solution is distributed on the floor evenly. Half an hour after laying, the screed is wiped with graters to a flat surface. All this needs to be done in one day. Then three days after, the surface must be wetted with water, so that there are no cracks.