Can I add foam insulation to the inside of a wall instead of exterior?
I live in a three story end unit town house. I am getting ready to remodel the master bedroom. Our closet is on the north exterior wall and I was looking to remove the existing sheet rock on the north wall and install new insulation along with stryofoam insulation board.
Since I can’t install the foam board on the exterior, can I install it on the interior for additional insulation? And if so do I use unfaced insulation and the foam board will act as the vapor barrier?
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