In order to increase the amount of useful area in a summer house or a residential cottage made of wood, you can do the insulation of the attic (provided that you have, of course). Usually, insulation of the attic, and the whole house takes place at the construction stage, but if for some reason this was not done, then you can do insulation at any time. In addition to the insulation of the attic itself, it is also necessary to insulate the roof, because they are closely connected, for this this will prevent significant heat losses.
There are two ways of warming the house – outside and from the inside. Wooden houses are usually insulated outside, it is most appropriate – it helps to preserve wood, allows the walls to breathe and supports a unique microclimate. However, from an economic point of view, insulation from the inside of the attic is much more profitable. But living in such a room is unlikely to be pleasant, humidity and dampness will appear, which is not at all a sign of comfort.
As a heater, you can choose the material based on your capabilities, the benefit is the choice. The most budget option can be called foam. He has good characteristics: excellent thermal insulation, the ability to repel moisture, it is very convenient for installation and light, it is inexpensive.
In order for the work on insulation to benefit, it is necessary that the roof over the attic part of the house be erected according to all the rules. The layers of vapor barrier and thermal insulation, the rafter system and ventilation gaps, a layer of waterproofing, and good roofing material must be present there.
However, before starting work yourself, try to get a consultation of an experienced specialist so as not to encounter the advent of mold and fungus in the house, due to involuntarily disturbed technology or incorrectly selected material.