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Guide describing how to air-seal duct and flue shafts.

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

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

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.

This guide describes how to install a whole-building ventilation system to provide adequate dilution of indoor air contaminants.