We have a typical cape with a stairwell added on the back for access to the second floor. It is not heeated, so I'm putting up rigid foam - Dow's blueboard - over new batts in 2x4 walls. When I say "over," I mean that the foam extends full across the interior and not in between the studs or rafters.
I'd like to put the drywall right over the foam...will that work?
I concerned that, since the foam is less dense than wooden studs, the drywall will crater as screws grab the wood and pull the drywall snug to the foam. I've seen and heard of strapping being put over the foam, but I really want to avoid another step if it's possible.
Thanks very much!
I'd like to put the drywall right over the foam...will that work?
I concerned that, since the foam is less dense than wooden studs, the drywall will crater as screws grab the wood and pull the drywall snug to the foam. I've seen and heard of strapping being put over the foam, but I really want to avoid another step if it's possible.
Thanks very much!
