Hello all, I have a detached garage that I currently use as my home wood shop. This is my first winter in at as I relocated everything from the basement. I have old and actual 2x4 walls that are 14" oc, this leaves me with 12" of spacing between wall studs. What are my best insulation options? I believe I am limited to R13 or R15 faced fiberglass insulation. I don't know if I could compress the standard 15" into the cavities or if there is a chance 23" insulation could fit if cut in half and not leave any spaces. Thanks in advance for any help.
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Insulation in detached garage