the cheapest and easiest way of doing vaulted ceilings.
Your concern is a valid one and the condensation should not be a concern.
If your in the future plans are to have any lighting or ceiling fans installed in that ceiling, best do it now. I am very serious.
If you close it up and seal it up and later want that done, its a major task since there is no room up there.
© 2017 Renovate Your World LLC