Designed specifically for cathedral ceilings and vaulted roof systems, Owens Corning® R-30 Cathedral kraft-faced insulation delivers high thermal performance where space and airflow matter most. These pre-cut fiberglass batts are sized to fit between rafters while maintaining proper ventilation channels, helping improve energy efficiency and indoor comfort year-round. The kraft facing acts as a built-in vapor retarder, making this insulation a trusted solution for both professional contractors and homeowners tackling high-performance roof assemblies.