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// CODE SNIPPET

N1102.2.11 (R402.2.11) Crawl Space Walls

Residential Code 2015 of Utah > 11 [RE] Energy Efficiency > N1102 (R402) Building Thermal Envelope > N1102.2 (R402.2) Specific Insulation Requirements (Prescriptive) > N1102.2.11 (R402.2.11) Crawl Space Walls
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As an alternative to insulating floors over crawl spaces, crawl space walls shall be permitted to be insulated when the crawl space is not vented to the outside. Crawl space wall insulation shall be permanently fastened to the wall and extend downward from the floor to the finished grade level and then vertically and/or horizontally for at least an additional 24 inches (610 mm). Exposed earth in unvented crawl space foundations shall be covered with a continuous Class I vapor retarder in accordance with this code. All joints of the vapor retarder shall overlap by 6 inches (153 mm) and be sealed or taped. The edges of the vapor retarder shall extend not less than 6 inches (153 mm) up the stem wall and shall be attached to the stem wall.

Related Code Sections


N1102.2.11 [RE] Energy Efficiency, (R402.2.11) Crawl Space Walls
As an alternative to insulating floors over crawl spaces, crawl space walls shall be permitted to be insulated when the crawl space is not vented ...
Residential Code 2015 of Utah > 11 [RE] Energy Efficiency > N1102 (R402) Building Thermal Envelope > N1102.2 (R402.2) Specific Insulation Requirements (Prescriptive) > N1102.2.11 (R402.2.11) Crawl Space Walls
R402.2.11 [RE] Residential Energy Efficiency, Crawl Space Walls
As an alternative to insulating floors over crawl spaces, crawl space walls shall be permitted to be insulated when the crawl space is not vented ...
Residential Energy Conservation Code 2018 of Utah > 4 [RE] Residential Energy Efficiency > R402 Building Thermal Envelope > R402.2 Specific Insulation Requirements (Prescriptive) > R402.2.11 Crawl Space Walls
R408.3 Foundations, Unvented Crawl Space
to the stem wall or insulation. One of the following is provided for the under-floor space: Continuously operated mechanical exhaust ventilation ...
Residential Code 2015 of Utah > 4 Foundations > R408 Under-Floor Space > R408.3 Unvented Crawl Space
1208.1 Interior Environment, Crawl Spaces
Crawl spaces shall be provided with not less than one access opening that shall be not less than 18 inches by 24 inches (457 mm by 610 mm) ...
Building Code 2018 of Utah > 12 Interior Environment > 1208 Access to Unoccupied Spaces > 1208.1 Crawl Spaces
1209.1 Interior Environment, Crawl Spaces
Crawl spaces shall be provided with not fewer than one access opening that shall be not less than 18 inches by 24 inches (457 mm by 610 mm) ...
Building Code 2015 of Utah > 12 Interior Environment > 1209 Access to Unoccupied Spaces > 1209.1 Crawl Spaces
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