Help Insulating an Old Wall Assembly

I’m renovating a late-1800s house and I want to add some insulation to the walls (carefully, without rotting anything out). Climate zone 5A, southeast Michigan. I’m starting in one room… I’m renovating a late-1800s house and I want to add some insulation to the walls (carefully, without rotting anything out). Climate zone 5A, southeast Michigan. I’m starting in one room…Read MoreGreenBuildingAdvisor