What r value Rockwool batts when using exterior eps insulation?

I’m building in the mountains of North Carolina, zone 5. Wall assembly is :2×6 framing with Rockwool comfortbatt insulation7/16 zip1 1/2″ Exterra foam gps exterior insulation. R7.5Furring strip rainscreen with… I’m building in the mountains of North Carolina, zone 5. Wall assembly is :2×6 framing with Rockwool comfortbatt insulation7/16 zip1 1/2″ Exterra foam gps exterior insulation. R7.5Furring strip rainscreen with…Read MoreGreenBuildingAdvisor