Poly air barrier on outside vaulted ceiling

I’m in climate zone 5A about to install a tongue and groove pine ceiling on the underside of the vaulted scissor trusses above a covered back deck. The homeowner had… I’m in climate zone 5A about to install a tongue and groove pine ceiling on the underside of the vaulted scissor trusses above a covered back deck. The homeowner had…Read MoreGreenBuildingAdvisor