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Concrete crawlspace wall with exterior insulation.

Concrete crawlspace wall with exterior insulation.

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Crawl space with exterior insulation

Crawl space 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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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 exterior insulatio

Concrete crawl space wall with exterior insulation

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Concrete masonry crawl space wall with exterior insulation

Concrete masonry crawl space wall with exterior insulation

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Concrete crawl space wall with interior insulation

Concrete crawl space wall with interior insulation

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Easy access

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Water intrusion

Water intrusion

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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 crawl space wall with interior spray foam insulation

Concrete crawl space wall with interior spray foam insulation

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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 rigid insulation; sill details are shown.

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

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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 - Poured concrete 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 - 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.

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Wrong - Polyethylene sheeting should be lapped up sides of walls and pillars and taped

Wrong - Polyethylene sheeting should be lapped up sides of walls and pillars and taped

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Insulation Installation Achieves RESNET Grade 1

Guide

Guide describing RESNET Grade 1-level installation of insulation in walls, attics, and floors.

Right - This rigid insulation is correctly installed in a level layer over aggregate; the seams will be taped

Right - This rigid insulation is correctly installed in a level layer over aggregate; the seams will be taped

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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.

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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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Polyethylene Over Aggregate

Polyethylene Over Aggregate

CAD File

Rigid Insulation Over Aggregate

Rigid Insulation Over Aggregate

CAD File

Insulating Garages in Multifamily Buildings

Guide

Guide describing how to properly insulate garages in multifamily buildings.

Foil Bubble Pack: Subslab Insulation?

Reference

Article describing the effective R-values of various subslab insulation products, including foil bubble pack.

Insulating Crawl Space Floors in Existing Homes

Guide

Guide describing how to upgrade a crawlspace floor in an existing home by adding insulation.

Reducing Thermal Bridging in Mass and Steel-Framed Multifamily Buildings

Guide

Guide describing common areas of thermal bridging in mass (concrete) and steel-framed multistory buildings and methods and materials for addressing those points of thermal bridging.

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