Grout

[midvinter]

I'm working on fixing up a room. There's a draft from the ceiling molding, and I don't want damp air coming in from the attic.
Is it okay to seal along the entire walls under the ceiling molding with acrylic sealant?
Is there a risk that I might seal too much and it could lead to mold problems instead?

 

[jon_h]

No, there's no problem with sealing too much. Acrylic works fine. But isn't there a way you can solve this from the attic instead? It seems like something is wrong with the insulation if air is coming down like that.

 

[midvinter]

Hopefully, this will only be a short-term solution. You're right, there is no plastic under the insulation in the attic, and there should be, right?

 

[jon_h]

Yes, but not to prevent air from going down, but to prevent moisture from the room from going up to the attic and condensing.

But if there's a draft at the eaves, there should be some insulation missing somewhere.