The substrate is used in the process of laying a parquet board, cork coating, laminate and piece parquet. The main functions of the substrate is the leveling of the floor surface, noise insulation, thermal insulation and depreciation. For sale the substrate is presented in the form of overall sheets or rolls, it does not require any fixation, whether it is gluing or screwing to the base. At the moment, many types of different substrates are used, but only three can be distinguished, it is polystyrene, cork substrate and polystyrene foam. The most natural material among all listed, as is already clear, is a cork substrate, it has a different thickness and is sold in rolls the total area of which is 10 kV. m. The budget option includes polystyrene foam. As for polystyrene, it is in the middle price category.