The removal and replacement of slates on the roof is also necessary when replacing flashings on the roof. When flashing metal deteriorates and must be replaced, the slates that cover the flashing must be removed in order to allow the old flashing to be taken out. Once the old metal is completely out, new metal can be installed, after which the slates are replaced in their original locations. When the job is completed, the roof should look like the original roof, not like a repaired roof. This is routine work for a slate roof restoration professional.