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Exterior Edge Insulation for Existing Foundation Slabs

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

Slab-on-grade foundation and safe room.

Publication Date

Mon, 03/01/2021 - 12:00

Rigid Foam Insulation Installed over Existing Foundation Slabs

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

Right – The seam between the slab and the foundation wall is sealed with urethane caulk.

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

Spray foam insulation extends down the foundation wall to the slab, which has been retrofitted by cutting the slab to install drainage mat against the wall and a new perimeter footing drain, along with rigid foam plastic above the slab.

Publication Date

Mon, 07/01/2013 - 12:00

The goal of foundation moisture management is to construct the basement, crawlspace, or slab in a way that keeps moisture from getting in in the first place

Publication Date

Thu, 03/01/2012 - 12:00

A concrete slab-on-grade foundation with exterior insulation, which can be elevated above the local grade as a flood-prevention strategy.

Publication Date

Tue, 01/01/2013 - 12:00

Spray foam extends down the foundation wall to the slab, which has been retrofitted by adding dimple plastic drainage mat and rigid foam insulation.

Publication Date

Mon, 07/01/2013 - 12:00

This exterior insulated slab-on-grade monolithic grade beam foundation is protected from pests by termite shield at the sill plate, borate-treated framing, flashing at end of wall insulation, brick veneer over slab-edge insulation, and rock ground cover.

Publication Date

Mon, 03/01/2021 - 12:00

Right – The slab is coated with two coats of epoxy paint to minimize moisture transfer through the slab from the ground.

Termite-Resistant Foundations and Walls

Guide describing techniques and measures for increasing the termite resistance of a home's foundations.

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.

UAF Cooperative Extension Service: Radon Mitigation in Super-Insulated Slab

Publication Date

August, 2013

Author(s)

Benesch

Organization(s)

Cold Climate Housing Research Center,

CCHRC

Video describing radon precautions taken for a construction project in a high-risk radon area in Alaska.

A concrete slab floor can be elevated above local grade as a strategy to prevent flood damage.

Publication Date

Tue, 01/01/2013 - 12:00

Epoxy paint is installed to provide a moisture control layer on the surface of an existing basement slab

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

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.

Rigid foam insulation and a thin slab were installed over the dirt and gravel of this sealed crawlspace

The existing slab is retrofitted with epoxy paint, rigid foam insulation, sleepers (furring strips), and subfloor.

Publication Date

Sun, 06/01/2008 - 12:00

Right - Retrofit of an existing basement slab by adding dimple plastic mat, rigid foam insulation, and a floating subfloor.

The existing slab is retrofitted by coating with epoxy paint, then installing rigid foam insulation and a floating subfloor.

Publication Date

Mon, 07/01/2013 - 12:00

An uninsulated (or existing insulated) basement slab is retrofitted to reduce moisture transmission by sealing with epoxy paint.

Publication Date

Thu, 09/10/2015 - 12:00

Right - The existing basement slab is retrofitted by installing a dimple plastic drainage mat, rigid foam insulation, and a floating subfloor.

Publication Date

Mon, 07/01/2013 - 12:00

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.

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

Rigid Foam Board Interior Insulation for Existing Foundation Walls

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

Water Management of Existing Basement Floor

Guide describing how to retrofit an existing basement floor or slab to reduce moisture issues.

Footing Drain Pipe

Guide describing how to help drain water away from the perimeter footing.

Radon Mitigation in New Construction

Publication Date

August, 2013

Author(s)

Benesch

Organization(s)

Cold Climate Housing Research Center,

CCHRC

Video describing radon precautions taken for a construction project in a high-risk radon area in Alaska.

Exterior Edge Insulation for Existing Foundation Slabs

Slab-on-grade foundation and safe room.

Rigid Foam Insulation Installed over Existing Foundation Slabs

Right – The seam between the slab and the foundation wall is sealed with urethane caulk.

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.

Spray foam insulation extends down the foundation wall to the slab, which has been retrofitted by cutting the slab to install drainage mat against the wall and a new perimeter footing drain, along with rigid foam plastic above the slab.

The goal of foundation moisture management is to construct the basement, crawlspace, or slab in a way that keeps moisture from getting in in the first place

A concrete slab-on-grade foundation with exterior insulation, which can be elevated above the local grade as a flood-prevention strategy.

Spray foam extends down the foundation wall to the slab, which has been retrofitted by adding dimple plastic drainage mat and rigid foam insulation.

This exterior insulated slab-on-grade monolithic grade beam foundation is protected from pests by termite shield at the sill plate, borate-treated framing, flashing at end of wall insulation, brick veneer over slab-edge insulation, and rock ground cover.

Right – The slab is coated with two coats of epoxy paint to minimize moisture transfer through the slab from the ground.

Termite-Resistant Foundations and Walls

Spray Foam Interior Insulation for Existing Foundation Walls

UAF Cooperative Extension Service: Radon Mitigation in Super-Insulated Slab

A concrete slab floor can be elevated above local grade as a strategy to prevent flood damage.

Epoxy paint is installed to provide a moisture control layer on the surface of an existing basement slab

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

Rigid foam insulation and a thin slab were installed over the dirt and gravel of this sealed crawlspace

The existing slab is retrofitted with epoxy paint, rigid foam insulation, sleepers (furring strips), and subfloor.

Right - Retrofit of an existing basement slab by adding dimple plastic mat, rigid foam insulation, and a floating subfloor.

The existing slab is retrofitted by coating with epoxy paint, then installing rigid foam insulation and a floating subfloor.

An uninsulated (or existing insulated) basement slab is retrofitted to reduce moisture transmission by sealing with epoxy paint.

Right - The existing basement slab is retrofitted by installing a dimple plastic drainage mat, rigid foam insulation, and a floating subfloor.

Exterior Insulation for Existing Foundation Walls

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

Rigid Foam Board Interior Insulation for Existing Foundation Walls

Water Management of Existing Basement Floor

Footing Drain Pipe

Radon Mitigation in New Construction

Insulation for Existing Crawl Space Floors

Vertical Radon Ventilation Pipe

Radon Fan

Sump Pump Cover Gasket