Air Space Above Roof Sheathing – Cathedral Ceiling?

I have read about the different options for Cathedral ceilings, and I was curious about something.  Let’s say my roof is 16″ I-Joists and I’m here in climate zone 5… I have read about the different options for Cathedral ceilings, and I was curious about something.  Let’s say my roof is 16″ I-Joists and I’m here in climate zone 5…Read MoreGreenBuildingAdvisor