New roof: add rigid foam?
I enjoy your articles.
We are putting new decking and metal standing seam roof on a 1970 home. The rafters are 2×4 and there is also a cathedral ceiling.
When we remove the existing decking, can I put 1″ rigid foam panel directly on top of the rafters, then add the decking, then the synthetic layer , then the metal roof?
Should I use radiant barrier 1″ decking? and which way doe the shiny side go, up to the sky or facing downward?
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