The main damage to the metal roof can be mechanical damage and roof corrosion, as well as depressurization of the seams. To eliminate defects, first clean the damaged place using a metal brush. Next, cut a metal patch and using a soldering iron, a pig of a lead with zinc, solder it to the damaged surface. After cooling, the solder should be removed with a file. Then paint the roof with water -repellent paint for facades.