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Guide describing the installation of insulating sheathing above the roof deck on existing homes. This retrofit assembly is appropriate for homes with conditioned attics or where the retrofit is intended to create a conditioned attic.

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

Guide describing application of a radiant barrier layer in the attic to block radiant heat transfer between hot surfaces and heat-absorbing surfaces.

Guide describing how to achieve RESNET Grade 1 installation standards, and meet/exceed code using batt insulation in existing walls.

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 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 methods of installing blown insulation in exterior wall cavities of existing homes with minimal disruption to occupants.

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

Guide describing how to complete remove and replace a window in an existing home.

Guide describing how to insulate and air-seal dropped ceilings and soffits to prevent air leakage.

Guide describing the practice of burying HVAC ducts in loose-fill insulation on the attic floor.

Guide describing approaches to burying and encapsulating ducts in unconditioned attics to increase the overall R-value of duct insulation.

Guide describing method for installing ducts in a duct chase in a dropped ceiling.

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

Guide describing method for designing and installing ducts in a raised ceiling chase.

Guide that illustrates how and when to encapsulate ductwork in unconditioned attics, increasing the R-value of duct insulation, mitigating condensation issues, and reducing air leakage.

Guide describing how to upgrade or expand an existing HVAC system.

Guide describing how to install slab edge insulation when retrofitting existing slab-on-grade foundations.

Guide describing how to insulate a new foundation wall or an existing foundation wall by adding rigid insulation to the exterior side.

Guide describing how to insert a replacement window in an existing home.

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 a floor over an uninsulated basement or crawl space.

Step 5: Thermal Comfort

Above Deck Rigid Foam Insulation for Existing Roofs

Air Sealed, Insulated Basements

Air Sealing and Insulating Ceilings in Vented Attics

Attic Eave Minimum Insulation

Attic Radiant Barriers

Batt Insulation for Existing Exterior Walls

Batt Insulation for Existing Vented Attics

Below Deck Spray Foam Insulation for Existing Roofs

Blown Insulation for Cavities of Existing Exterior Walls

Blown Insulation for Existing Vented Attic

Complete Window and Frame Replacement

Dropped Ceiling/Soffit Below Unconditioned Attic

Ducts Buried in Attic Insulation

Ducts Buried in Attic Insulation and Encapsulated

Ducts in Dropped Ceilings

Ducts in Interstitial Floor Framing

Ducts in Raised Ceiling Sections

Encapsulated Ducts

Existing HVAC System Upgrade or Expansion

Exterior Edge Insulation for Existing Foundation Slabs

Exterior Insulation for Existing Foundation Walls

Insert Replacement Window

Insulating and Air Sealing Existing Floor Overhangs (Cantilevers)

Insulating and Air Sealing Existing Floors above Unconditioned Spaces

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Step 5: Thermal Comfort