This thesis aims to analyze the original value from the structure style sheet metal shacks around the open-side look up dog saver. To use as a guide to decide who are interested in installing the roof sheet metal type. From the roof structure to perform the test, the temperature in order to compare the average room temperature inside the case that is not installed in the same place is the building of two adjacent phanit. For which there is no install metal sheet lathan. With the average temperature is 32.4° c and the rooms are installed with sheet metal temperature of 30.1° c, which can be seen that there is a difference of temperature is approx. 2-3 degrees Celsius. Making within the room is cool and more advantageous to use less energy in cooling systems that are less.From the comparative analysis, economics, engineering, cost considerations in terms of initial cost money to install roofing and conserving the use of air conditioning, electrical energy. In the majority of the term return on investment, installing metal sheet for this project, lathan, based on the 12-square-metre area. The installation is about payback period, 8,453 baht is approximately 4 years, 5 months, which is a term that satisfactorily and the life of the installation of the metal sheet is 20 years old and lathan calculated from Cash Flow Analysis when using commercial bank interest rates, MRR is 8% will have a cash flow return on 14,881.64 at the present.
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