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Guide describing how to apply an air control layer directly over existing wall sheathing and cover with two layers of insulating sheathing held in place by vertical furring strips.

Guide describing how to insulate the wall cavities of an existing home with spray foam.

Guide describing how to frame and insulate exterior-to-interior wall intersections to reduce heat losses and gains though structural framing.

Guide describing how to install spray foam on the exterior of the existing home after framing over the existing siding.

Guide describing how to install continuous air barriers in exterior walls.

Guide describing construction and insulation techniques for double wall framing.

Guide describing how to create a fully aligned air barrier behind a staircase.

Guide describing how to insulate a basement to improve the overall thermal performance of the building and provide more dry, usable conditioned space for home occupants and HVAC equipment.

Guide describing RESNET Grade 1-level installation of insulation in walls, attics, and floors.

Guide describing continuous rigid insulation installation procedures to reduce thermal bridging and help provide thermal protection.

Guide describing air barrier installation, insulation installation, and air-sealing for double walls (half or full walls included in a home design as an architectural feature that provides a more dimensional appearance).

This guide describes how to install a rigid air barrier to walls behind showers and tubs.

Guide describing how to insulate headers over doors and windows to reduce heat loss and heat gain through solid wood framing.

Guide describing insulation techniques for skylight shaft walls.

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 frame and insulate corners to reduce heat losses and gains though structural framing.

Guide describing how to construct homes with structural insulated panels.

Guide describing how to construct exterior walls with insulated concrete forms.

Guide describing how to insulate a floor overhang (or cantilever) on an existing home by adding insulation and an air barrier to air seal the floor joist bays under the cantilever.

Guide describing how to insulate and air-seal attic knee walls and floor joist cavities under knee walls.

Guide describing how to insulate and air seal the floor joists over a garage when there is loving space above the garage.

Guide describing different options for providing seismic and thermal resistance for homes with basement foundations, crawlspace foundations, or crawlspace foundations with a "cripple" wall.

Guide describing the design and installation considerations for recladding of above grade walls using insulated vinyl siding.

Guide describing how to correctly air-seal a wall with missing top plates or open wall cavities.

Guide describing how to apply spray foam insulation to the floor of the attic in existing homes.

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

Guide describing common areas of thermal bridging in mass (concrete) and steel-framed multistory buildings and methods and materials for addressing those points of thermal bridging.

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