In the Case of Laying Floor Tiles in a Wet Room, An Insulation Coating Plays a Huge Role. The Coating of A Moisture Insulation Type Is Creed from Rubber -Like Materials. Such A Coating Shoup Protect AGAINST POSSIBLE EXTENSIONS AND COMPRESSION OF THE BASICS of Tiles. From Increased Humidity, The Plywood Base Can Expand, So High -quality Will Not Allow Cracking of the Tile Coating.