Air sealing a beadboard ceiling
I am working to revamp our newly purchased 1908 home and increase efficiency on all fronts. One of the big projects I am facing is the ceiling and attic. After removing some hideous drop ceiling, I’m faced with the original tongue and groove beadboard. Apart from a few parts where a couple boards need to be replaced, and a bit of sagging, the ceiling looks great. However, I am certain it’s an absolute vortex of air passing directly into the attic and out to the world. Currently, the joists above are insulated with cellulose to the joists and the occasional fiberglass batt.
My question is: what’s the best way to airseal the ceiling while preserving the look of the beadboard? I am fine with covering it with drywall, but my wife is insistent that we try to make the beadboard work.
Ideas I have had:
1. Remove the cellulose, and put foam board between the joists. Seal the edges with spray foam.
2. Remove the cellulose, add a barrier like Tyvek and use Spray Foam between the joists.
2. Put a membrane of some sort (plywood? drywall?) on top of the attic joists, and cover it with more cellulose.
I’d appreciate any input! Thanks.
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