Foundations & Floors -

Air Sealing/Insulation

Guide describing how to air-seal sill plates in single-family homes and multifamily buildings.

Guide describing how to insulate an existing foundation wall by adding spray foam insulation to the interior side of the wall.

Guide describing how to insulate the sill beam or sill plate on the exterior side in a way that allows drying to the exterior, as part of an exterior wall upgrade.