Roy Duff
3/31/2015
My existing roof is flat rectangular, asphalt (tar), which was covered 12 years ago with a heat seamed vinyl material, no known leaks. I spoke with a metal contractor about a metal roof. He advised that a metal framework with purlins to create a slope would be the way to go, he said that it woulnot need to be any additional insulation. He stated that the slope frame would be attached with lag type screws through the existing roof to the plywood underlay net. Does this sound feasible, should the metal be insulated to prevent condensation, this is a very humid climate. Thanks.
Todd Miller
Isaiah Industries, Inc.
4/1/2015
This is feasible. I know that some of our member companies work with this type of system. ATAS International comes to mind but I am sure others do as well. I assume the resulting cavity will be vented. You could add insulation. It would not hurt anything.
Roy Duff
4/1/2015
Thanks for the reply.

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