I’m planning on putting up T&G pine on the ceiling in a new workshop here in CT. Since it is a “barn” I don’t believe I need a fire barrier between the T&G and ceiling joists. However, I’d like to build the shop somewhat to house codes.
If I put drywall up before the T&G, do I need to tape/mud the dry wall?
Also, is an air barrier attached to the bottom of the ceiling joists recommended?
Thanks!
Evan
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Replies
Hi Evan,
We install a lot of T&G and shiplap paneling here in RI; for residential jobs we're typically required to install 1/2" gypsum panel and set tape at seams and joints only (no skimcoat, no feathering of compound) and mud over your screw holes. This is somewhere between a 1 - 2 finish. With some insulation/sealing prep and proper execution, your drywall will constitute an effective air barrier. Do some research on airtight drywall installation on FHB for a more thorough explanation. Layout your framing on the completed drywall so the nails used to secure the T&G paneling land on rafters and don't perforate the drywall between rafters.
Other opinions may differ, but that's the nature of construction - that's just my 2 cents on your project.
Yes drywall should be fire taped- one coat of mud and paper tape
Thanks!
it's generally a good idea to tape and mud the drywall to ensure a clean finish and proper sealing, especially if you're aiming to meet housing codes. As for the air barrier, yes, it's recommended to attach one to the bottom of the ceiling joists to improve energy efficiency and prevent air leakage.