- spray foam around/behind outlets on exterior walls (major leak point) which can be done often by just removing the outlet covers - spray foam around windows

- spray foam around/behind outlets on exterior walls (major leak point) which can be done often by just removing the outlet covers - spray foam around windows (requires removing trim) - caulk joints/spray foam rim joist in basement/crawl space - spray foam around any attic can lights/duct work - make sure ducts and air returns are sealed properly