The area to be installed in roof GES systems and the area structure have critical importance in the construction selection. A suitable construction structure should be selected by examining the roof structure to be installed. In roof GES installations, the coating of the roof in the area to be installed and the material of the roof carrier are checked. The construction systems to be preferred according to the roof material are created in appropriate sizes and dimensions and positioned to provide maximum efficiency. The construction structure is created to last for many years and to carry the appropriate weight.

Static load and seismic calculations should be made on sandwich panel roofs and the most suitable construction structure for the roof structure should be determined. The construction to be used on the sandwich panel must be properly assembled against possible leaks. Accurate construction is produced by calculating pitch ranges on sandwich panel roofs.