How to insulate and/or air seal sill plate?
Our insulation contractor recommended that our builder insulate or seal the area where the joists meet the concrete basement wall on the exterior. We have plans to spray foam the rim joist area from the interior, but the insulation contractor said this area can be a major air leak. He doesn’t do anything with the exterior and didn’t even have any product recommendations. This area will have siding on two sides of the house (where the grade slopes). Thank you!
GBA Detail Library
A collection of one thousand construction details organized by climate and house part