Best metal gauge?

We are upgrading to a metal roof from asphalt shingles and rubber roofing, post Hurricane Matthew. We lost 6 trees that served as a wind barrier between our house and the river. The roofer has suggested a 29 gauge metal placed over the existing double layer asphalt shingles and rubber over asphalt roll-on (where the roof is flat). Is this a good plan of action? Is it ok to put the metal over a double layer roof? Is 29 gauge the proper thickness?		Guest User 3/1/2017	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/21862/find/
I would prefer to see the thermal mass of that roof reduced by removing the shingles. 29 ga is fine as long as the panel is well designed.		Eric Novotny An informed customer is the Best Customer! 3/1/2017	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/21863/find/

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