But first another intermediate layer is poured. It is made on the basis of a mixture of cement and water, which form a kind of suspension. It should not be too thin or too dry. This layer is necessary for the displacement of air cement from the air pores. The result is a monolithic coating that will not be afraid of heavy loads or excessive moisture.
But now you can move on to the final screed, which not only aligns the insulated floor, but also prepares it for laying out any floor covering.
The quality and strength of the entire assembly will depend on the quality of the prepared solution. In other words, it is the quality of sand and cement, as well as their proportion in the mixture. The lack of cement leads to the weakening of the strength, while its excess – to an overly rapid solidification of the solution. (more…)