nancy matthews
I am a contractor. I have a client that wants an addition with cathedral ceiling and metal roof. I lack the space for a cold roof. Therefore I would like to do a hot roof. I am thinking: dry pack insulation on inside, ice and water shield over sheathing, and no vents. Strapping over sealed sheathing? Should I be concerned about condensation? Job is in western MA, so lots of moisture. Trying to prep properly in order to avoid a call back. What advice do you have for this situation? Your advice will be greatly appreciated. -squarejig
Todd Miller
Isaiah Industries, Inc.
I would put a vapor barrier behind the drywall on the ceilings. I also would work in a minimum 1" vented airspace underneath the decking. That is what the ICC code requires. As far as battens or not, that all depends upon what metal roof you choose. Many residential metal roofs are not designed to go over battens.
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