Exterior roof insulation overhang?

Does continuous exterior insulation on a roof need to extend into the overhang spaces, or can those be blocked off? (saving on insulation costs / sq footage).I’ve found diagrams specifying… Does continuous exterior insulation on a roof need to extend into the overhang spaces, or can those be blocked off? (saving on insulation costs / sq footage).I’ve found diagrams specifying…Read MoreGreenBuildingAdvisor