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

Guide describing how to insulate a floor over unconditioned space with conditioned space above by adding insulation and air-sealing.

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

Guide describing how to frame a wall with minimal wall studs to prevent heat losses and gains through walls.

Guide for designing and installing interior ducts in an interstitial floor cavity in new and existing homes.