The screed is a layer of concrete solution, which is applied to the flooring. This is an almost irreplaceable solution in the process of arranging warm floor. The screed consists of several layers, each of which provides for the performance of certain functions.
The first layer is usually applied to the black coating. It allows you to effectively leve the surface. This layer is always created, regardless of whether it is planned to arrange a warm floor or not. Thanks to this, the floor becomes perfectly flat.
The other layer is located above thermal insulation. Such a screed forms the basis where the cable is laid.
The last layer is responsible for the closure of the warm floor. It contributes to the effective spread of heat. It is also used as the basis for the arrangement of flooring.
From which they create a screed?
The most common is the screed, for the creation of which the following materials are used:
Cement.
Sand.
Naturally, this is not a final list of necessary building materials. In most situations, engaged in the formation of warm floor, specialists use specialized plasticizers. Cements and expanded clay are used as a means of saving cement. It is worth noting that the content of cement can be different. Here, much will depend on what purpose the flooring has.
To date, when arranging the screed, there are no strictly defined norms. It is believed that ordinary for warm floor has the following proportions of the ingredients: 3 parts of sand, 1 – cement. As for water, it must be added until the solution accepts the necessary consistency. Effective and popular plasticizer is considered PVA glue. It is used in the following proportions – one kilogram of glue per cement bag.
In addition, you can use other proportions that will depend on the purpose of the flooring and the features of its operation. If after solidification it is planned to install parquet, tiles or laminate, then the ratio of components may change. In this situation, the share of cement may account for 5 shares of sand. This provides an opportunity to get a high -quality and reliable coating that can last for many years.
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