vernon maceri
8/29/2005
I have an A-fraim roof it is exposed beam inside setting on a 30deg. angle, with 2x6 toung and grove decking. I wish to reroof with a metal roof and insulate between the decking and the metal. Can you give me and guidance on how to and how thich insulation I can do?
Allan Reid
Dura-Loc Roofing Systems, Inc.
9/1/2005
It certainly depends on the climate you are in. In the very cold climates you should have a total value of R40. I would check with the local building official. Of course anything is better than nothing and certainly an R28 should be minimum. Please do not forget to include a 1" vented vertical air space to comply with code. It is the most important feature you can do.
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