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Right - Closed-cell spray foam covers the interior of the foundation wall and wall framing is placed to the inside of the spray foam.

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Rigid Foam Board Insulation for Existing Band Joists

Guide

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

Damp-Proof Exterior Surface of Below-Grade Walls

Guide

Guide describing how to apply water management strategies to below-grade walls.

Exterior Edge Insulation for Existing Foundation Slabs

Guide

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

Foundation wall interior polyisocyanurate, foil-faced, exposed

CAD File

Passive House Basement Foundation Walls: Karuna Video #3

Video

Video describing the details of the basement foundation walls in a passive house.

Right - Closed-cell spray foam was applied to the interior of a foundation wall.

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Rigid Foam Insulation Installed over Existing Foundation Slabs

Guide

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

The basement walls’ interior framing is set in 3 inches from the concrete to allow space for closed-cell foam that is sprayed directly on the concrete, then blown cellulose is added to fill the wall cavity.

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Spray foam extends down the inside of the foundation wall to the uninsulated slab; because the wall lacked exterior perimeter drainage, the slab was cut and an interior footing drain was installed.

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Increase Seismic Resistance and Thermal Performance of Basement, Crawl Space, and Crawl Space with Cripple Wall Foundations

Guide

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

Right - Rigid foam board is attached to the interior surface of the basement walls.

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Wrong – The insulated concrete forms at the foundation do not have a damp-proof coating

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Right – Construction adhesive is applied to the rigid foam panels that will be installed on the interior basement walls.

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ICF bricks are stacked to form hollow walls that are reinforced with steel rebar before the concrete is poured in

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Capillary Break Beneath Slab - Polyethylene Sheeting or Rigid Insulation over Aggregate or Sand and Geotextile Mat

Guide

Guide describing how to install a capillary break under a slab foundation using either polyethylene sheeting or rigid insulation installed over aggregate or over sand and geotextile matting.

Right - Closed-cell spray foam is used to retrofit an existing rubble basement foundation wall.

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Right - Below-grade concrete has been properly sealed against moisture and is now having insulation installed.

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Right – The insulated concrete forms that are below-grade have a damp-proof coating to prevent moisture seeping into the foundation

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Right - The basement walls are wrapped with 3 inches of XPS rigid foam that will be taped at the seams then covered with a dimpled plastic water barrier.

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Foil-faced rigid foam and spray foam can be used to insulate a basement on the interior; use good moisture management techniques to keep the basement dry

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This basement is insulated on the exterior with rigid foam over dampproofing, with granular backfill and footing drains to facilitate drainage away from the foundation, a termite shield to protect from pests, and cellular PVC to protect the rigid foam.

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The basement is constructed with precast concrete walls lined with R-21.3 foil-faced rigid foam while an R-10 layer of XPS rigid foam covers the ground under the slab.

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Right - Closed-cell spray foam covers the interior of the foundation wall and wall framing is placed to the inside of the spray foam.

Rigid Foam Board Insulation for Existing Band Joists

Damp-Proof Exterior Surface of Below-Grade Walls

Exterior Edge Insulation for Existing Foundation Slabs

Foundation wall interior polyisocyanurate, foil-faced, exposed

Passive House Basement Foundation Walls: Karuna Video #3

Right - Closed-cell spray foam was applied to the interior of a foundation wall.

Rigid Foam Insulation Installed over Existing Foundation Slabs

The basement walls’ interior framing is set in 3 inches from the concrete to allow space for closed-cell foam that is sprayed directly on the concrete, then blown cellulose is added to fill the wall cavity.

Spray foam extends down the inside of the foundation wall to the uninsulated slab; because the wall lacked exterior perimeter drainage, the slab was cut and an interior footing drain was installed.

Increase Seismic Resistance and Thermal Performance of Basement, Crawl Space, and Crawl Space with Cripple Wall Foundations

Right - Rigid foam board is attached to the interior surface of the basement walls.

Wrong – The insulated concrete forms at the foundation do not have a damp-proof coating

Right – Construction adhesive is applied to the rigid foam panels that will be installed on the interior basement walls.

ICF bricks are stacked to form hollow walls that are reinforced with steel rebar before the concrete is poured in

Capillary Break Beneath Slab - Polyethylene Sheeting or Rigid Insulation over Aggregate or Sand and Geotextile Mat

Right - Closed-cell spray foam is used to retrofit an existing rubble basement foundation wall.

Right - Below-grade concrete has been properly sealed against moisture and is now having insulation installed.

Right – The insulated concrete forms that are below-grade have a damp-proof coating to prevent moisture seeping into the foundation

Right - The basement walls are wrapped with 3 inches of XPS rigid foam that will be taped at the seams then covered with a dimpled plastic water barrier.

Foil-faced rigid foam and spray foam can be used to insulate a basement on the interior; use good moisture management techniques to keep the basement dry

This basement is insulated on the exterior with rigid foam over dampproofing, with granular backfill and footing drains to facilitate drainage away from the foundation, a termite shield to protect from pests, and cellular PVC to protect the rigid foam.

The basement is constructed with precast concrete walls lined with R-21.3 foil-faced rigid foam while an R-10 layer of XPS rigid foam covers the ground under the slab.

DOE ZERH HIA 2017 Case Study: Thrive Home Builders, Courtyard Rows, Lone Tree, CO

New Whole-House Solutions Case Study: Insight Homes: Deep Creek, Seaford, Delaware

Water Management of Existing Basement Floor

Floor Above Unconditioned Basement or Vented Crawlspace

Termite shield with exterior rigid foam above and below

Water Management of Existing Crawlspace Floor

Spray foam on a stone or rubble foundation