Unfortunately, the housing stock in Russia is very worn out and the walls (especially the Khrushchevs) no longer delay heat so well. How we would like. And in order not to freeze in winter, despite the hot heating batteries. It is necessary to somehow warm your quarter, especially applies to corner apartments, which are not only cold, but also because of condensation formed on the walls are often covered with dangerous mold for health.
To warm the room from the inside, it is necessary to fix vertically wooden or metal lags on the outer walls (the distance between them is 50-70 cm). Between them, plates of heat-insulating material with a thickness of 15-20 cm are installed, it is best to use the estrous polystyrene foam. He does not need vapor barrier, so the installation technology will be more simple. If another thermal insulation material (fibrous) is used, then on both sides it is necessary to thoroughly extend the vapor barrier material – until the lag is attached and on top of the heat -insulating material. Otherwise, water will accumulate in its thickness and worsen thermal insulation properties. On top, the structure is closed with drywall, after which it can be painted or poured with wallpaper.
Of course, this design will solve the problem only partially – ideally, it is necessary to achieve the repair of walls from the HOA or the management company. Moreover, in this case, the beneficial area of housing is significantly reduced.