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

Guide describing how to increase insulation in existing homes by installing batt insulation on the ceiling plane of a vented attic.

Guide describing a method for insulating an unvented attic by spraying foam insulation along the underside of the roof deck.

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

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

Guide describing air-sealing of the seams and holes in HVAC air handler and furnace cabinets.