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Orbit
Member since Jun 2019
7 posts

Standing Seam on Existing Shingle Roof

I had some missing aspahlt shingles (6'x6') area to my existing roof from Ida. I started getting estimates for a roof replacement, and I am interested in a Standing Seam metal roof. The sales rep I talked to said they could install the standing seam panels over the existing shingles and removal of the existing shingles is not needed. Does anyone have any personal experience with having standing seam panels install over existing asphalt shingles? I am trying to see how reliable is that method.


HBomb
LSU Fan
Dallas
Member since May 2012
215 posts

I’m not a roofer, but why would you want to put a new roof on top of a damaged one?

I have standing seam metal roof and they tore off the shingles prior to installing.


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baldona
Auburn Fan
Florida
Member since Feb 2016
16820 posts

You can do metal on top of shingles and some people will do shingles on top of shingles. Neither means it’s a great idea. The biggest issue I know of with not removing them is finding the damaged wood underneath and replacing it.

The obvious reason is to save money.


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30
Ling King
LSU Fan
Gulfport MS
Member since Feb 2012
163 posts

Don’t do it! As others have said, you need to inspect the substrate. Also, going over the shingles could cause oil canning. This is a waviness in the panel.


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