Finishing a Sunroom Ceiling
KelliSean
| Posted in General Questions on
We have a sunroom that was originally a covered porch. The previous owners had it enclosed. It has air supply and return and two walls of windows. The ceiling was left as the Original porch vinyl. I want it finished like an indoor room. I removed the vinyl so now the ceiling is chipboard sheathing.
I would like tongue and groove or drywall. Should the sheathing be left in place? What are the steps to finish this correctly. I’m in St. Louis which I think is zone 5.
Thank you
Kelli
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Replies
If you can vent the attic space above the porch, the simplest is a standard vented assembly with batts between the ceiling joists. You can also blow insulation in there if you don't want to take the OSB down by drilling a couple of holes for access.
If the OSB under the existing joists can be left in place with the seams taped with a quality sheathing tape (Zip or 3m 8067) for air sealing, than the T&G can be installed right over it.
Thank you for the advice I didn’t think about the zip tape. There is some blown insulation and the roof is vented at the ridge and soffit.