Air sealing: acoustic sealant, caulk, or spray foam? For air sealing in the attic, which material is best? 


I usually see people say caulk or spray foam, but then some people say those materials usually fail because of the difference in the shrinking/growth of drywall and wood (specifically at the top plates, I guess). 

Is acoustical sealant the way to go for this then? It sounds like it never fully hardens so it is able to keep the seal better. 

If so, do people usually use Tremco or will the green glue sealant work as well? 

Thanks!