Guides A-Z

Guide describing how to air-seal and insulate a ceiling where the insulation is installed on top of the ceiling (on the attic floor) in a vented attic.

Guide describing how to air-seal bathroom and kitchen exhaust fans.

Guide providing guidance on insulating attic eaves in new and existing single-family homes and multifamily buildings.

Guide describing how to add spray foam insulation to the underside of the existing roof deck as part of the conversion of a vented attic to an unvented, insulated attic.

Guide describing how to insulate a vented attic in an existing home using blown insulation added to the attic floor.

Guide describing how to apply spray foam insulation to ceilings in existing homes.

Guide describing options for designing and locating the thermal boundary at either the attic floor or along the roof line in new and existing homes.