Quote:
Originally Posted by mongocanfly
back when Dad was in the fire dept, they put out their share of house fires... he said the hardest to put out was where people put lathes and metal roof over shingles...with the lathing on the shingles it allowed air to get under the tin and the shingles would burn like a furnace...
i know your not doing metal but food for thought..
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Hah! I put on a metal roof like that once. It wasn't over old shingles, it was a new log cabin 2x2 plus styrofoam plus metal over 2x6 t&g on 6x6 rafters. I told the owner who I was helping day labor that we needed to put a couple long nails through the 2x2 and t&g into each rafter, but he was afraid we would miss a 6" wide beam and stick a nail through his ceiling into the open beam cabin. So we just used 10d nails into the t&g.
That winter there was a big wind and the whole damn thing, metal, styrofoam, and 2x2's, flew off into the national forest!
