I have uninsulated CMU walls with stucco exterior, 3/4″ furring + 1/2 drywall interior. The 3/4″ air cavities are open to the vented attic. I plan to seal the cavities… I have uninsulated CMU walls with stucco exterior, 3/4″ furring + 1/2 drywall interior. The 3/4″ air cavities are open to the vented attic. I plan to seal the cavities…Read MoreGreenBuildingAdvisor

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