BASC Search | Building America Solution Center

Unvented roof assembly at eave retrofitted with rigid foam, spray foam, and taped top edge of existing house wrap or building paper

Publication Date

Mon, 07/01/2013 - 12:00

Install all layers of the drainage plane to overlap, not underlap, to direct bulk water down and out of the wall.

Publication Date

Thu, 11/01/2007 - 12:00

Rigid foam insulation is installed on the garage side of the shared garage wall and roof of an existing home

Publication Date

Mon, 07/01/2013 - 12:00

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

Publication Date

Mon, 07/01/2013 - 12:00

Vented roof assembly at rake retrofitted with spray foam and additional insulation installed at the attic floor and extended to the rake edge

Publication Date

Mon, 07/01/2013 - 12:00

Rigid insulation and water control layers are installed on the exterior of a flat foundation wall; spray foam insulates the rim joist

Publication Date

Mon, 07/01/2013 - 12:00

Unvented roof assembly at eave retrofitted with rigid foam, spray foam, and a fully adhered membrane seal at the top of wall-to-roof transition

Publication Date

Mon, 07/01/2013 - 12:00

Unvented roof assembly at rake retrofitted with spray foam installed along the underside of the roof deck and extended to the rake edge to insulate and air seal the attic

Publication Date

Mon, 07/01/2013 - 12:00

Vented roof assembly at eave retrofitted with rigid foam, spray foam, and fully adhered membrane to air seal the top of wall-to-roof transition

Publication Date

Mon, 07/01/2013 - 12:00

Side view showing how the existing garage wall and ceiling are air-sealed prior to installing rigid foam insulation on the garage side of the shared wall of an existing home.

Publication Date

Mon, 07/01/2013 - 12:00

Side view showing air-sealing and rigid foam insulation is installed over existing wall and ceiling under a room above, then covered with new gypsum board.

Publication Date

Mon, 07/01/2013 - 12:00

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.

Publication Date

Mon, 07/01/2013 - 12:00

Lower wall insulation installation

Publication Date

Mon, 09/01/2014 - 12:00

Upper wall insulation installation

Publication Date

Mon, 09/01/2014 - 12:00

Single framed wall converted to double wall and insulated with closed-cell spray foam and loose-fill fibrous insulation

Publication Date

Fri, 05/01/2015 - 12:00

Plan view (from above) showing how the existing garage wall gypsum board is cut away to air-seal the shared wall before adding rigid foam insulation on the garage and exterior walls of the home.

Publication Date

Mon, 07/01/2013 - 12:00

Install minimum 6" wide self-adhered butyl Z-flashing

Publication Date

Mon, 09/01/2014 - 12:00

Upper wall insulation installation with butyl z-flashing

Publication Date

Mon, 09/01/2014 - 12:00

Water management detail for a solar panel rack mounting block installed in rigid foam that was installed over an existing roof

Publication Date

Fri, 05/01/2015 - 12:00

Tape the joint between the top insulation sheet and the Z-flashing with 2" wide tape to improve air tightness

Publication Date

Mon, 09/01/2014 - 12:00

Clean taping areas and install 3" tape on vertical joint of upper insulation overlapping the horizontal joint

Publication Date

Mon, 09/01/2014 - 12:00

Tape horizontal joint with minimum 3" wide tape placing tape offset high on the joint, adhearing to the upper sheet without wrinkles

Publication Date

Mon, 09/01/2014 - 12:00

Terminate 4" tape with 2" wide tape placing tape offset high on the joint, 2/3 of the tape should be adhered to the sheet of insulation

Publication Date

Mon, 09/01/2014 - 12:00

Insulating Existing Floor Overhang

Guide describing how to upgrade a wall with a floor overhang (or cantilever) on an existing home by adding insulation (rigid insulating sheathing and/or closed-cell spray foam) and air-sealing.

Batt Insulation for Existing Vented Attics

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

Spray Foam Insulation for Cavities of Existing Exterior Walls

Guide describing how to insulate the walls of an existing home with spray foam insulation.

Exterior Insulation for Existing Foundation Walls

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

Spray Foam Interior Insulation for Existing Foundation Walls

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

Rigid Foam Insulation Installed Between Existing House and Garage Walls

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.

Batt Insulation for Existing Exterior Walls

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

Roof/Attic to Exterior Wall Air Control Upgrade

Guide outlining how to retrofit an exterior wall and/or attic to provide continuous air sealing.

Rigid Foam Insulation for Existing Exterior Walls

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.