As part of a single-story office building renovation in MA, the contractor is proposing to use 8" CMU exterior wall for a portion of he building. The CMU will not be insulated. I was thinking of Z channels inside with insul. (R18 fiberglass?) and interior gypsum board. Do you think this assembly complies with the MA energy code? Or where can I find the info? I don't have any experience with the ComCheck software.