Insulating Rimjoist including deep cavity

Hello,I live in Zone 5a in a 1910 house. I have been air sealing the rim joists by first spraying Great Stuff Foam around the rim joists. In a few… Hello,I live in Zone 5a in a 1910 house. I have been air sealing the rim joists by first spraying Great Stuff Foam around the rim joists. In a few…Read MoreGreenBuildingAdvisor