I'm getting ready to redo a 2nd floor bedroom in my 1892 balloon framed house. I've read that it is a bad idea to put insulation in the walls, interferes with ventilation and possibly creates a mold problem. I am going to drop the plaster ceiling and vapor barrier and insulate (attic above) and do exterior and possibly interior storm windows.
Should I leave the (plaster) walls be? Heating will be radiant floor, going to rip the floor boards up, do warmboard with hardwood on top (original fir T&G floor is too far gone to save.)