Fencing structures are an important part of a building with energy-efficient design. Fencing walls of residential and public buildings determine architectural appearance of an object and temperature and humidity conditions inside premises. In this article we study a enclosing structure, manufactured using technology of a thermal frame. Main technical solutions and components were dismantled, a comparison with the most popular enclosing structures of residential and public buildings was made. The calculation of the economic efficiency of the enclosing structure in comparison with other solutions was made by analyzing selling value. It was considered that use of a thermo frame as a fencing structure has great efficiency in residential and public buildings where maximum benefit is required in areas, as well as in reconstructed and built-up buildings where there are restrictions on specific weight of a structure. Calculation of economic benefits for a landlord was made