Vapor issues with an unvented cathedral ceiling A Frame

I am currently building a 1900 sq ft A frame in zone 3C (Coastal). The metal roof is an unvented  24/12 pitch, with what is locally known as “flash and… I am currently building a 1900 sq ft A frame in zone 3C (Coastal). The metal roof is an unvented  24/12 pitch, with what is locally known as “flash and…Read MoreGreenBuildingAdvisor