The expenditure part for the insulation of our houses is very difficult to count on expenses and income. Finding benefits here is easier than calculating the income and heat consumption, and reformat them in money. The expenditure part for heating the room is not a constant in principle, however, it will most likely be calculated for the season, since during one season, price fluctuations rarely occur. From year to year, the cost only increases by heat and energy. But if you purchase a thermal imager, and look at your house in winter, then you can just be horrified from the realization of how many heat just disappears from the windows, doors, roofs and even walls. Just from everywhere, to one degree or another, warm air heats the street, leaving your home not as warm as it could be without these losses. Plus again the costs of providing this heat, which are not mastered by you. Today, most of the buildings in Russia do not have thermal insulation protection, while in the world of capitalism there are practically no insulated houses. The solution to the problem is not always one -sided and consists only of thermal insulation of the roof, windows, doors, you can approach its solution from a different side. The large area of heat loss completely overshadows the local points of large losses. In other words, you go more heat through the walls than through windows, doors and roof. Nobody advises insulation inside the room – a decrease in the size of the premises of both real and visual significantly. Insulate the walls from the outside where it is a more profitable enterprise. Stirol is the ancestor of all plastics, for which a person who discovered this relationship received the Nobel Prize. Polystyrene today is used as a thermal insulation material that is able to withstand various atmospheric loads, while remaining excellent isolation material. He is not afraid of icing, insects, rodents and heat. Its cost is quite low, moreover, both the production and manufacture of ready -made panels. This material is very part of us in everyday life – from the production of dishes to extinguishers of shocks in auto industry. The lack of a threat of dusting is the main positive moment that distinguishes polystyrene foam from mineral wool. This is a durable and very common material in modern construction, which has excellent thermal insulation qualities, sound insulation and fire resistance.