Cathedral ceiling metal roof and radiant barrier

Hello,I’m in northern California. I’m installing a standing seam metal roof on my house with cathedral ceilings. I’m wanting un vented due to potential critter intrusion. Ceiling is 2×8 construction. I’m… Hello,I’m in northern California. I’m installing a standing seam metal roof on my house with cathedral ceilings. I’m wanting un vented due to potential critter intrusion. Ceiling is 2×8 construction. I’m…Read MoreGreenBuildingAdvisor