Exterior roof insulation

Whats the best detail for mineral wool exterior insulation on a sloped roof as follows: Climate zone 4 PNW location so fire prevention important. Slope 1 in 4 Metal roof… Whats the best detail for mineral wool exterior insulation on a sloped roof as follows: Climate zone 4 PNW location so fire prevention important. Slope 1 in 4 Metal roof…Read MoreGreenBuildingAdvisor