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Right – The basement of this cold-climate home is insulated along interior walls with 2 inches of foil-faced rigid foam; finished basement walls also have a 2x4 interior wall insulated with R-19 blown-in fiberglass insulation and a poly vapor barrier.

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Right - Potential locations for basement insulation in new construction, slab insulation should always be underneath, with walls insulated (a) inside, (b) outside, (c) sandwiched inside, or (d) inside and outside of walls.

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The walls of this home are filled with R-23 blown cellulose insulation.

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Assembly Sequence for Concrete Wall with Interior Foam Spray Insulation

Video

Video animation showing an assembly sequence for a concrete basement wall with interior spray foam insulation.

Assembly Sequence for Concrete Crawl Space Wall with Exterior Insulation

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Video animation showing an assembly sequence for a concrete crawl space wall with exterior insulation.

Rigid insulation is installed on the exterior side of the flat foundation wall

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Right – Unfaced batt insulation completely fills the wall cavities.

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This assembly for above-grade or below-grade garage walls in any climate zone uses a hybrid of continuous rigid insulation and cavity insulation on the interior side of the wall.

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Key elements of a wall system clad with insulated vinyl siding

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Right - Closed-cell spray foam insulation fills the wall cavities of the exterior walls in this home retrofit

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Right - Potential locations for crawlspace insulation: vapor sheeting should always cover the floor with insulation (a) outside walls, (b) inside walls, (c) both sides of walls, (d) sandwiched inside walls, or (e) under the first floor.

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Larsen trusses made of 9-inch I joists, set perpendicular to the exterior wall at 16 inches on center, provide a second wall cavity that can be filled with blown insulation, greatly increasing the insulation value in the walls.

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Rigid Foam Board Interior Insulation for Existing Foundation Walls

Guide

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

Install an air barrier on the exterior of attic knee wall insulation.

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Right – The backing on this knee wall was air sealed prior to insulation.

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Right – Ladder blocking allows for insulation behind the wall intersection

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Rigid foam insulating sheathing installed over an existing garage ceiling with retrofits to air seal exterior wall before adding exterior wall insulating sheathing

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Slab-on-grade with concrete stem wall and slab insulation

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Insulated concrete forms (ICF) provide an insulated below-grade foundation wall; the floor is connected to the ICF wall with joist hangers and ledger bolted into the concrete core of the ICF

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Concrete crawl space wall with interior spray foam insulation

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Rigid Foam Insulation Installed Between Existing House and Garage Walls

Guide

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.

Measure Guideline: Incorporating Thick Layers of Exterior Rigid Insulation on Walls

Reference

Report describing wall assemblies that use layers of rigid exterior insulation thicker than 1-½ inch and require a secondary cladding attachment location exterior to the insulation.

Insulating sheathing is installed on exterior of an existing framed wall with water control between existing sheathing and insulating sheathing

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Batt insulation should be cut to fit around wiring so that insulation can completely fill the wall cavity

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Masonry walls can be insulated with rigid foam insulation attached to the interior face of the concrete block as shown here.

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Right – The basement of this cold-climate home is insulated along interior walls with 2 inches of foil-faced rigid foam; finished basement walls also have a 2x4 interior wall insulated with R-19 blown-in fiberglass insulation and a poly vapor barrier.

Right - Potential locations for basement insulation in new construction, slab insulation should always be underneath, with walls insulated (a) inside, (b) outside, (c) sandwiched inside, or (d) inside and outside of walls.

The walls of this home are filled with R-23 blown cellulose insulation.

Assembly Sequence for Concrete Wall with Interior Foam Spray Insulation

Assembly Sequence for Concrete Crawl Space Wall with Exterior Insulation

Rigid insulation is installed on the exterior side of the flat foundation wall

Right – Unfaced batt insulation completely fills the wall cavities.

This assembly for above-grade or below-grade garage walls in any climate zone uses a hybrid of continuous rigid insulation and cavity insulation on the interior side of the wall.

Key elements of a wall system clad with insulated vinyl siding

Right - Closed-cell spray foam insulation fills the wall cavities of the exterior walls in this home retrofit

Right - Potential locations for crawlspace insulation: vapor sheeting should always cover the floor with insulation (a) outside walls, (b) inside walls, (c) both sides of walls, (d) sandwiched inside walls, or (e) under the first floor.

Larsen trusses made of 9-inch I joists, set perpendicular to the exterior wall at 16 inches on center, provide a second wall cavity that can be filled with blown insulation, greatly increasing the insulation value in the walls.

Rigid Foam Board Interior Insulation for Existing Foundation Walls

Install an air barrier on the exterior of attic knee wall insulation.

Right – The backing on this knee wall was air sealed prior to insulation.

Right – Ladder blocking allows for insulation behind the wall intersection

Rigid foam insulating sheathing installed over an existing garage ceiling with retrofits to air seal exterior wall before adding exterior wall insulating sheathing

Slab-on-grade with concrete stem wall and slab insulation

Insulated concrete forms (ICF) provide an insulated below-grade foundation wall; the floor is connected to the ICF wall with joist hangers and ledger bolted into the concrete core of the ICF

Concrete crawl space wall with interior spray foam insulation

Rigid Foam Insulation Installed Between Existing House and Garage Walls

Measure Guideline: Incorporating Thick Layers of Exterior Rigid Insulation on Walls

Insulating sheathing is installed on exterior of an existing framed wall with water control between existing sheathing and insulating sheathing

Batt insulation should be cut to fit around wiring so that insulation can completely fill the wall cavity

Masonry walls can be insulated with rigid foam insulation attached to the interior face of the concrete block as shown here.

This unfaced fiberglass completely fills the wall cavities, with RESNET Grade 1 insulation.

This 2x6 wall is advanced framed and filled with dense-packed cellulose insulation.

Spray Foam Insulation Applied over the Siding of Existing Exterior Walls

Right - Mineral Wool insulation is installed on the exterior of wall with furring strips.

Moisture levels are checked in the blown cellulose insulation before enclosing the walls.