The most important thing is that the walls of logs are accumulated, distributing evenly warmth throughout the house, giving it comfort, even in the most severe frosts. If the house is built from glued timber or logs, then they will not need insulation under arctic conditions. Also, thermal insulation qualities of the house made of log material retain heat in winter, but also preserve coolness well in the summer. This is the main reason why wooden houses are distributed from the coast of the Arctic to very hot subtropics.