Robust Insulation/Ventilation for an Unconditioned Detached Garage
I’ve built a 32×24 detached garage with huge storage space upstairs. I’ll be spraying roughly 2-3 inches of closed cell spray foam in walls and roof rafters so the building will have a nice sealed envelope. (soffits and roof ridge are NOT vented.)
My question is this: If the space is sealed/insulated, do I need to have some type of ventilation? Or maybe just a dehumidifier?
I don’t need heating or cooling because we really won’t be in the building very much.
Thanks for any advice!
btw- I’m in middle Tennessee
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