IECC ENERGY CODE AMENDMENT, TABLE R402.1.2, INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENT
Boise City Code § 9-9-23
in effect9-9-23: IECC ENERGY CODE AMENDMENT, TABLE R402.1.2, INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENT:
Repeal the row in Table R402.1.2 for climate zones "5 and Marine 4" and replace with the following:
TABLE R402.1.2
INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENTa, j
Climate Zone | Fenestration U-Factorb | Sky lightb U-Factor | Glazed Fenestration SHGC b,e | Ceiling R-Value | Wood Frame Wall R-Value | Mass Wall R-Valuei | Floor R-Value | Basementc Wall R-Value | Slabd R-Value & Depth | Crawl-Spacec Wall R-Value
5 | 0.3 2 | 0.5 5 | NR | 38 | 20 or 13+ 5h | 13/17 | 30g | 15/19 | 10, 2 ft | 15/19
Footnotes published underneath Table R402.1.2 in the code are applicable.
(Ord. 42-20, 12-1-2020, eff. 1-1-2021; Ord. 4-25, 2-4-2025)
Source: Boise City, Idaho, City Code and City Charter (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/boise_id/latest/boise/0-0-0-10773Fetched: 11/1/2026