Wind-driven air infiltration through rim joists
Why it happens here
Homes on the east side sit directly in the path of wind coming off Grove Creek Trail. Rim joists and band boards are rarely sealed during construction, so air moves freely between the crawl space and the living area.
Our approach
We seal every rim joist with closed-cell spray foam before adding insulation. That stops the airflow at the source and makes the rest of your insulation work the way it should.