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Right - This concrete basement wall is insulated on the interior basement walls with spray foam and under the slab with rigid foam; footing details are shown.

Right - This concrete basement wall is insulated on the interior basement walls with spray foam and under the slab with rigid foam; footing details are shown.

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

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

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Right - This poured concrete basement wall is insulated on the exterior and under the slab with rigid insulation; footing details include interior and exterior footing drain pipe.

Right - This poured concrete basement wall is insulated on the exterior and under the slab with rigid insulation; footing details include interior and exterior footing drain pipe.

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

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

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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.

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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Good water management practices like sloping grade away from house, and installing gutters, perimeter drain pipe, a capillary break, and free-draining soils or drainage mat protect the foundation from water saturation.

Good water management practices like sloping grade away from house, and installing gutters, perimeter drain pipe, a capillary break, and free-draining soils or drainage mat protect the foundation from water saturation.

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Crawl space with exterior insulation

Crawl space with exterior insulation

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Vented crawl space with insulation in the ceiling

Vented crawl space with insulation in the ceiling

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Concrete crawl space wall with interior insulation

Concrete crawl space wall with interior insulation

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Concrete crawl space wall with exterior insulatio

Concrete crawl space wall with exterior insulation

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Concrete masonry basement wall with exterior insulation.

Concrete masonry basement wall with exterior insulation.

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Concrete crawlspace wall with exterior insulation.

Concrete crawlspace wall with exterior insulation.

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Concrete crawl space wall with interior spray foam insulation

Concrete crawl space wall with interior spray foam insulation

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Vented crawl space with concrete walls and insulated ceiling

Vented crawl space with concrete walls and insulated ceiling

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Concrete masonry crawl space wall with exterior insulation

Concrete masonry crawl space wall with exterior insulation

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Right - Basement with interior semi-permeable XPS or EPS insulation.

Right - Basement with interior semi-permeable XPS or EPS insulation.

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Crawl space interior insulation with EPS or XPS semi-permeable insulation on inside wall

Crawl space interior insulation with EPS or XPS semi-permeable insulation on inside wall

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Unvented crawl space with interior insulation - designed for termite resistance in heavily infested areas

Unvented crawl space with interior insulation - designed for termite resistance in heavily infested areas

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Right - This concrete basement wall is insulated on the interior with rigid insulation; sill details are shown.

Right - This concrete basement wall is insulated on the interior with rigid insulation; sill details are shown.

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Right - The concrete basement wall is insulated on the interior with rigid foam; the footing detail is shown.

Right - The concrete basement wall is insulated on the interior with rigid foam; the footing detail is shown.

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Right - This concrete basement wall is insulated on the interior with spray foam insulation; sill detail are shown.

Right - This concrete basement wall is insulated on the interior with spray foam insulation; sill detail are shown.

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Concrete masonry unit (CMU) basement wall with exterior insulation, footing detail

Right - The concrete masonry unit (CMU) basement wall has exterior insulation; the footing details include interior and exterior footing drain pipe.

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Right - Poured concrete basement wall showing exterior insulation and sill detail; above-grade wall has sheathing to the outside of the rigid foam.

Right - Poured concrete basement wall showing exterior insulation and sill detail; above-grade wall has sheathing to the outside of the rigid foam.

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Right - Poured concrete basement wall showing exterior insulation and sill detail; above-grade wall has sheathing to the inside of the rigid foam.

Right - Poured concrete basement wall showing exterior insulation and sill detail; above-grade wall has sheathing to the inside of the rigid foam.

Publication Date
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Right - Concrete masonry unit (CMU) basement wall showing exterior insulation and sill detail; above-grade wall has sheathing to the inside of the rigid foam.

Right - Concrete masonry unit (CMU) basement wall showing exterior insulation and sill detail; above-grade wall has sheathing to the inside of the rigid foam.

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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.

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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Foil Bubble Pack: Subslab Insulation?

Author(s)
Fulger Don
Organization(s)
Home Energy
Publication Date
Article describing the effective R-values of various subslab insulation products, including foil bubble pack.
Reference

Air Sealed, Insulated Basements

Guide describing how to insulate a basement to improve the overall thermal performance of the building and provide more dry, usable conditioned space for home occupants and HVAC equipment.
Guide

High-Thermal-Mass Construction

Guide describing materials and methods for incorporating thermal mass into the construction of a home for temperature regulation, energy savings, and resistance to extreme heat and cold.
Guide

Unvented, Insulated Crawlspaces

Guide describing methods for insulating an unvented crawlspace or conditioned basement with rigid foam on the interior side of the walls to provide an insulated space for HVAC equipment.
Guide

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.
Guide

Sealing and Insulating Existing Crawl Space Walls - Code Compliance Brief

Publication Date
The intent of this brief is to provide code-related information about sealing and insulating crawl space walls in existing residential buildings to help ensure that the measures will be accepted as being in compliance with the code. Providing the same information to all interested parties (e.g., code officials, builders, contractors, designers, etc.) is expected to result in increased compliance and fewer innovations being questioned at the time of plan review and/or field inspection.
Code Compliance Brief

Buried Ducts within Ceiling Insulation of Vented Attics in all Climate Zones - Code Compliance Brief

Publication Date
The intent of this brief is to provide code-related information about buried ducts in vented attics to help ensure that the measure will be accepted as being in compliance with the code. Providing notes for code officials on how to plan review and conduct field inspections can help provide jurisdictional officials with information for acceptance. Providing the same information to all builders, designers, and others is expected to result in increased compliance and fewer innovations being questioned at the time of plan review and/or field inspection.
Code Compliance Brief