Cathedral Ceiling- Any issue with this build/material choice? (Air sealed. No vapor barrier, San Diego)

Building is in San Diego.  Does anyone see longevity issues the following material/build choice?From inside to outside.   Joists are 2×10. Primed/painted T&G boards5/8″ drywall (primed) for fire barrier.  FULLY AIR SEALED.23/32… Building is in San Diego.  Does anyone see longevity issues the following material/build choice?From inside to outside.   Joists are 2×10. Primed/painted T&G boards5/8″ drywall (primed) for fire barrier.  FULLY AIR SEALED.23/32…Read MoreGreenBuildingAdvisor