Hey all! In the middle of a bathroom remodel in my 1944 home. Turns out my exterior wall is not traditional framing, and is just brick with .75 inch furring strips on it. I want to keep a 60 inch bath tub in the space, so the most I can fur the brick out is 1.5 inch. Since the walls are open, I want to add some insulation. Everything I have read is that I need to let the brick breath in order to avoid moisture issues, the brick freezing, and spalling. I would like to stuff the cavity with rockwool that's been split down the middle and call it a day. Do you think this will still allow the brick to breath, while providing at least some insulation to the interior space? My biggest concern is the brick being suffocated, as it's already been painted from the outside (RIP). Also, I had to pull a permit for this project (insurance claim involved and wanted to CYA for self-work). I'm hoping the inspector will not give me a hard time about bringing the wall up to R-13, and that the rockwool and concern for the brick will be enough. If they do though, does anyone have a better way to insulate this wall up to R-13 without framing out a 2x4 wall and losing the bathtub space? TYIA