Interior air sealing at bottom plate
tjones1014
| Posted in General Questions on
CZ 3A/4A
2001 gut reno
We redid the exterior of the home and taped the foundation seam at the OSB sheathing with Siga Fentrim. If we taped the exterior, do we also need to air seal the interior bottom sill/plate to the slab?
Do we also need to air seal all of the drywall to the bottom sill?Â
If yes to either of these questions, do you have any specific product recs? All of the sealant/caulk/tape products start running together, and idk which route to take.
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Replies
If you taped the exterior, the bottom plate should be air sealed. With that said, you could add a secondary air seal from the inside, just in case. Any sealant or caulk should work. You didn't indicate if the bottom plate is sitting on wood or concrete. Just make sure the sealant is compatible with the materials you are sealing to. Caulking on the interior can work well (between the plate and floor), just make sure the floor covering people do not cut the seal, something I see often in my market.
Randy
Thank you! Also, I wasn't able to air seal the top plate from the exterior (pre-existing hip roof all the way around). What are your thoughts on trying to add a seal to the top of each stud bay from the interior for this using canned spray foam?