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One contractor proposed installing Gerard stone coated shake shingles over our existing Mueller CF Panel. He claims he has done this many times and is a certified Gerard installer. On the Gerard website they say that it can be installed over existing wood, wood shakes, or composition roofs. They do not specifically mention steel, but say to check with local building codes. Do you have any advice?
Or copy this URL:
https://www.metalroofing.com/spirit/comment/13702/find/
I encourage you to contact Gerard ... send them pictures of the roof.
Ultimately, you don't want to do anything that will void the warranty on the new roof or be a problem waiting to happen. In this case, they are the only ones who can answer the first question and they will be best at answering the second.
8/12/2009
Or copy this URL: https://www.metalroofing.com/spirit/comment/13702/find/Isaiah Industries, Inc.
8/13/2009
Or copy this URL: https://www.metalroofing.com/spirit/comment/13703/find/