Vapor Barrier Tongue And Groove Ceiling

That leads me to believe heated air may be escaping the rooms through the gaps.

Vapor barrier tongue and groove ceiling.

For example see how to build an insulated cathedral ceiling. The biggest air barrier blunder is to install tongue and groove boards as your finish ceiling without first installing taped. I am attaching the planks directly to the bottom of trusses. Don t forget to use airtight electrical boxes and to seal all of the air leaks at all penetrations.

The article includes this advice. Should i have a vapor barrier between the planks and the blown in insulation. The ceiling boards have a noticeable gap at the tongue and groove. I am concerned with air dust dirt leakage between the planks.

The best air barrier under tongue and groove boards is a layer of gypsum wallboard. A vapor retarder is a material used to prevent water vapor from diffusing into the wall ceiling or floor during the cold winter. Whether or not you need a vapor retarder hinges on three main factors your climate your home and the location of the wall you re insulating. Now i m a real fan ha ha of controlled mechanical ventilation to limit interior moisture levels in cold and mixed climates as well as to.

I am considering putting up poly or tyvek. Gba has long advised people installing a tongue and groove board ceiling to first install an air barrier of gypsum drywall. If you pay attention to airtightness when you install your air barrier you don t have to worry very much about vapor diffusion. To know if you need a vapor retarder ask yourself a few basic questions.

I am adding a tongue and groove cedar plank ceiling to a heated room in my pole barn.