You decide. Technical materials, such as adhesives, waterproofing and plaster finishes, are included in the price of the Classic model and we always select them as a system, because the durability of the finish depends on them. Finishing materials, that is tiles, floors, doors and fittings, you can buy yourself, choose with us, or leave their purchase and delivery to us. If you buy them yourself, before you order we will check the specification and tell you how much material to order, with a margin.