Installation on the screed of such a material as parquet is done when the level of the difference on a concrete basis is over 2 cm, well, if the level of unevenness of the less than the indicated figure, then it is best to use self -leveling products.
Before creating the screed, waterproofing is created, in the manufacture of which it will be reasonable to use thickened polyethylene, or a certain reinforced or foil products. Along the edges, near the partitions, it is necessary to remove this very waterproofing with a small margin, for installation for skirting boards. The screed can be laid directly on the concrete itself, or on the initially poured heat -insulating mass, but in this situation the level of surface thickness should be created at least 4 cm. In general, this work is quite simple. You just need to buy a floor, take tools and partner. You can order the material on the network.
In order for this material to dry, it takes a lot of time, for a cement with a thickness of a thickness of 3 to 5 cm, it takes about 6 weeks, and at first the cement mass hardens, and then it dries up. In the level of a solution of a solution of more than 5 cm, this time must be multiplied by 2.
It is also worth remembering that in this work you should not use drafts, fans or other equipment to accelerate the process. Thanks to such actions, drying the cement mass is carried out in an uneven manner, a large internal load is formed, after which cement can be deformed and cracks are formed on it. Then the installation of moisture -resistant material is performed.