The aim of the research was to develop a simple, environmentally friendly method of thermal insulation of the enclosing structures of pig breeding premises with signs of aging, for increase energy efficiency. General scientific (experiment, analysis, synthesis) methods were applied in solving the tasks. Thermal insulation of building envelopes with Keramoizol with a layer of 2,0 mm provides a relatively low (0.5 kg/m2) additional load on the supporting structures of the room. The developed method of thermal insulation makes it possible to effectively neutralize the cold / heat bridges of the enclosing structures. This applies chiefly the places of abutment of window and door openings and corner sections of enclosing structures. At the it same time, technical result is achieved by doubling the thickness of the coating layer. The full recoupment of the cost thermal with Keramoizol is 2.94 years. In addition, the thermal protection of the premises plays an important environmental role in the form of a significant share of energy savings (about 7.42 tons of fuel equivalent).