It was once believed that the heat in the house can be provided with thick walls. That is why the castles and monasteries built several centuries ago are distinguished by thick and massive walls. So, the brick wall should reach 1.5-2 meters wide, wooden-half a meter. This is certainly very expensive, therefore, various materials are used today that provide not only thermal insulation, but also savings in the construction and operation of the building.
The modern market offers various heaters, among which you can get lost and get confused. What do you need to know to choose the right thermal insulation material? All heaters are characterized by the coefficient of thermal conductivity.