This research is a study of the behaviour of heat transfer from a solar installation on the roof. By comparison, evaluation of heat transfer of roof between the roof steel roofing, steel sheet metal with metal sheet for the installation of single-crystalline, poly-crystalline and a thin-film Silicon.The price, based on the hypothesis after sadu heat transfer and heat transfer of combined roof (RTTV) result of analysis of heat transfer values. It was found that the quantity of heat transfer into the building is steel roofing sheet metal. The roof poly-crystalline silicon, single-crystalline and thin-film Silicon. respectively, and an analysis of the value of the total heat transfer of roof. It was found that the total value of the heat transfer characteristics of most roofs, as well as heat transfer above. That’s because the installation of solar panels on the roof, roof 2 storey compared, thereby reducing the heat fell to the roof and the sun shield and directs them to the building.