Quote from: OlJarhead on October 24, 2023, 12:51:14 PMIs it an attic or a loft?
There are ways now to just insulate the roof well and have no venting...I think it was MD that showed me some stuff on that years ago. I for one, won't do a vented roof in the woods again. It's just a bug and rodent entrance.
For me, I'll go with two layers of R10Foam and vapor barrier and move on. Other locals have done that for years without issue on vaulted cabin ceilings.