Want to insulate the outside walls of an old 20's frame home. Don't want to tear out all walls and replace, but willing to bore holes in stud bays (on inside) to 'put' in insulation. Not talking a job for the canned "STUFF", much larger job than that. Not too thrilled with loose fill blown-in stuff either. Anyone tried a foam type that doesn't expand too much and break the walls open? Any other ideas? Thanks!
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