Is OSB an air barrier? May 29, 2022October 4, 2021 by epht4 Is OSB an air barrier? More Posts:How Much Will A Radiant Barrier Save Me?How Should Insulation Be Installed In A Crawl Space?What Does Encapsulating A Crawl Space Mean?What Is All Borate Cellulose Insulation?Is Great Stuff Spray Foam Open Or Closed Cell?How Are Fireplace Doors Attached?See also What Does Twin Spark Engine Mean?