Assembly of Modular Coating Marco Ferutti Vario Oak Natural is a base of birch plywood with many layers and a decorative layer of natural oak tree. This design is the most stable for the setting of the parquet, because the base of birch is quite durable, resistant to temperature differences and moisture differences. Also, plywood from birch is available, due to this the total price of the coating is definitely acceptable. The thickness of the oak bar in the decorative layer is three millimeters. This is enough for a decent type of parquet in an expensive room and a long service life.