Materials for them are

Materials suitable for such isolation — stone cotton wool, technical traffic jams, silica fibers. intended for insulation of partitions. Materials for them are made of glass wools, felt, stone wool. Modern soundproofing materials also have additional beneficial properties. For example, a floor, dug in such a material, is very durable and flexible. There are special sets used for soundproofing walls, which consist of all the necessary elements. To achieve the best result, the sound insulation of walls is better to entrust professionals.