Share 'Does adding drill-and-fill insulation to uninsulated exterior walls without re-cladding lead to moisture issues in the wall cavities?'
Are you hesitant to add insulation to exterior walls of existing homes without also adding an exterior vapor barrier?
Have you been doing this for years and noticed no ill effects from moisture?
There are valid building science reasons to question whether or not adding insulation without adding a vapor barrier might be problematic. But then again, we think people have been doing this for…
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