The finish of a wooden house needs to start with the outer walls. You need to decide what material you want to sheathe. If you have chosen imitation of the beam, then you need to install a crate from the beam throughout the area of the house, then use the insulation, mineral wool or isovere. Before installing an imitated beam, these boards are treated with water -repellent and refractory antiseptics. They need to be installed from the bottom up, and from this it follows that the crate must be installed vertically.