In order for insulation to be effective to warm the cottage completely, roof, walls, floors in the entire cottage, and also to maintain heat, you need to put high -quality doors and windows. It is better to start insulation from the roof, as it is most affected by various natural phenomena. If the roof is pitched, it is better to insulate it with soft materials – cotton, and use vapor barrier film for reliable protection. But if the roof flat insulation requires additional materials and large costs. Wall insulation can be external, internal and interstial. For external insulation, various thermal insulating plasters are used or the method of ventilated facade is used. With intermedonian insulation, the material is placed between the supporting wall and the facing. Internal insulation is used less often, since dampness and various fungi on the walls may appear here.