The article is about ventilated system “Polialpan”. Article’s materials are based on estimated data, information taken from Media, different Internet resources, photo and video materials. The aim of the research is to show the possibility of improving of the housing stock, its reconstruction and modernization with using special façade system. It means that in this article we flush out the all details of this façade system. There is thermo technical calculation, demonstrative that façade system “Polialpan” is satisfiesthe requirements of normative document. The cost analysisis in it too, which is based on the specific residence building in Saint-Petersburg.