Thermal insulation. By this term, you need to understand a whole range of measures aimed at reducing all costs for heating a building or structure, providing a temperature necessary for the normal life of the temperature inside the rooms, and the prevention of condensation. Professional builders argue that the building loses about 20 percent of the volume of all the heat loss of the structure as a whole directly through the foundation. Therefore, thermal insulation of the foundation must always be assigned an important role.