My wife and I recently purchased a mid-1800's brick schoolhouse and are remodeling it from top to bottom. We stripped the walls down to the original brick (3 brick layers deep), and we then proceeded to stud the brick walls with 2X4's in preparation for adding Roxxul stone wool insulation. Our plan is to install the insulation and hang 1/2" drywall to finish the wall. My question is whether or not it is necessary to install a vapor barrier after putting the insulation between the studs. I've read conflicting opinions on the use of vapor barriers with brick. Some people have said installing one can create mold issues in the wall and will not allow the wall to properly dry, while others say it is essential as the exterior of the brick can get icy due to moisture escaping from the porous brick. I am seeking some clarification and advice on how to tackle this problem! We live just north of Cincinnati on the boundary between climate zones 4 and 5. Any advice and help is much appreciated!
Thanks for reading.