vented mineral wool roof, is air barrier desirable over mineral wool?

I’m about to undertake a top-down reinsulation of a roof area of my house which has seriously mouse-compromised fiberglass. rafters will be reinsulated with mineral wool and topped with an… I’m about to undertake a top-down reinsulation of a roof area of my house which has seriously mouse-compromised fiberglass. rafters will be reinsulated with mineral wool and topped with an…Read MoreGreenBuildingAdvisor