I was preparing to hang some shelves in our garage the other day and after some inspection I discovered that the drywall is hung on staggered horizontal 1x’s attached to the studs (can be seen just inside drywall in picture).
Our home is a split-level built in 1963 and the wall in question is an exterior wall with brick veneer. There appears to be sheathing between the studs and brick.
I’m considering removing all of the drywall to make some repairs for old termite damage. When hanging the new drywall, is there any reason I can’t/shouldn’t attach it directly to the studs? Or is the “air gap” created by the 1x’s somehow important to the function of the wall?
Really, I’m trying to understand why the drywall was originally hung this way rather than attaching directly to the studs.