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Guide describing how to upgrade a crawlspace floor in an existing home by adding insulation.

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

Guide describing how to install low-e interior storm windows.

Guide describing how to install low-emissivity exterior storm windows.

Guide describing how to design HVAC systems to be located within the conditioned space of the home, either in a utility closet or in an attic, basement, or crawl space.

Guide describing principles of insulating and air sealing band joists as a stand alone energy upgrade, or as part of creating a closed crawlspace.

Guide describing how to insulate closed crawlspace walls and band joist areas with rigid foam board insulation.

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 upgrade walls that separate the garage from the house by providing a continuous air control layer on the garage side of the wall and adding rigid foam insulation.

Guide describing how to insulate an existing slab floor by adding rigid foam insulation over the slab then installing a floating subfloor.

Guide describing how to air seal around duct shafts and flues installed through ceilings, walls, and flooring in new and existing homes.

Guide describing insulation techniques for skylight shaft walls.

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

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

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

Guide describing how to insulate an existing foundation wall by adding spray foam insulation to the interior side of the wall.

Guide describing methods for insulating an unvented attic along the roof line.

Guide describing method for insulating an unvented crawlspace or conditioned basement with rigid foam on the interior side of the walls.

Guide describing options for insulating and air sealing at either the attic floor or along the roof line in new homes.

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

This guide describes how to install a rigid air barrier to separate the porch attic from the conditioned space.

Guide describing options for adding dehumidification equipment to a home to maintain indoor relative humidity below 60%.

Guide describing how to rehab a window in an existing home.

Guide describing how to replace a window sash in an existing home.

Step 5: Thermal Comfort

Insulating Crawl Space Floors in Existing Homes

Insulating Existing Floors over Garage

Interior Storm Windows and Panels

Low-E Exterior Storm Windows

No Ducts or Air Handlers Located in Garage

Rigid Foam Board Insulation for Existing Band Joists

Rigid Foam Board Interior Insulation for Existing Foundation Walls

Rigid Foam Insulation for Existing Exterior Walls

Rigid Foam Insulation Installed Between Existing House and Garage Walls

Rigid Foam Insulation Installed over Existing Foundation Slabs

Sealing Duct Boots to Floor or Drywall

Skylight Shaft Walls

Spray Foam Insulation Applied over the Siding of Existing Exterior Walls

Spray Foam Insulation Applied to Existing Attic Floor

Spray Foam Insulation for Cavities of Existing Exterior Walls

Spray Foam Interior Insulation for Existing Foundation Walls

Unvented Attic Insulation

Unvented, Insulated Crawlspaces

Vented versus Unvented Attic

Vinyl Siding with Integrated Rigid Foam for Existing Walls

Walls Adjoining Porch Roof

Whole-House Dehumidification

Window Rehabilitation

Window Sash Replacement

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Step 5: Thermal Comfort