Search of possible solutions of energy saving and increase of power efficiency of buildings is given in article by means of application innovative airproof compositions. It simplifies the process of air tightness. After the application of the Mono’Air plasterers, carpenters, tillers and electricians can work without violating the air tightness of buildings. Similarly the use of Mono’Air allows you to handle difficult to reach areas. In a work test was performed using the airtightness of this material and without it and sources was considered of air leakage. Benefits of using and technical indicators of Mono’Air are presented.