Should I use vapour barrier on ceiling of three season cottage in Ontario?

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Should I use vapour barrier on ceiling of three season cottage?

Erica Pennell Sept. 14, 2021Last updated: Sept. 27, 2021

We are insulating roof from inside and then installing a wood ceiling. Wonder if there are any advantages to using a vapour barrier or whether this will actually cause moisture problems since any heat and moisture is caused from the inside not outside in a three season home.

Location is Ontario Canada. 

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