When laying the flooring, it is necessary to use the substrate. It performs several functions at once, ensuring high -quality flooring. Firstly, it helps to make the surface more even, which is very important when laying a parquet board and laminate, for which a perfectly flat surface is an important condition. Secondly, the substrate prevents the formation of humidity under the floor. If you do not use it, then the material made of wood can be deformed under the influence of moisture.