5.5″ Mineral Wool Batts vs 2″ Closed Cell Urethane Foam + 3.5″ of Cellulose

Building a new 2,600SF ranch. Got 2 quotes from my local insulation installer. I originally was planning on insulating the 2’OC 2×6 exterior walls with Rockwool (R-23). They told me… Building a new 2,600SF ranch. Got 2 quotes from my local insulation installer. I originally was planning on insulating the 2’OC 2×6 exterior walls with Rockwool (R-23). They told me…Read MoreGreenBuildingAdvisor