Metal Roofing Tile Machine is generally designed single-layer . In order to reduce the solar radiation heat from entering the building, when installing the roof panel, a thermal insulation layer can be installed in the roof system. There is a very simple and economical method, that is, before installing the roof steel plate, double-sided reflective foil film is laid on the purlins or slats. This method can also be used as steam isolation to reduce condensation.