The roof is the upper, final part of the building, which protects the structure of the building from atmospheric effects. The roof consists of a roof structure (truss) which can be made of wood, ferroconcrete, or steel, and of a roof covering (roofing tile, steel, waterproofing film, etc.). The selection of the roof covering depends on climate conditions and roof pitch. For example, in northern regions, the roof is steep due to large amounts of snow, whereas in the Mediterranean a roof with a gentle incline, made of roof tiles, is preferred. In cities, due to the height of the buildings and the simplicity of building construction, a flat roof with a waterproofing cover is preferred. For many years, roof waterproof membranes have been used for covering flat roofs. During assembly and welding with the hot air of PVC and TPO membrane on a flat roof, so-called laminated PVC and TPO sheet metals are used. Before assembly of the sheet metal itself, the sheet metal must be processed, cut, and bent into the necessary shapes. Therefore, as part of the graduation thesis, a conceptual solution for a sheet metal processing machine was designed and drawn. The hydraulic and electrical equipment as well as the steel profiles required for the construction of structural devices were selected. In the end, a tentative cost list for the production of the device based on the proposed conceptual solution is presented.