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Attic Insulation Upgrade Cost in Wyoming (2026)

Attic insulation upgrades in Wyoming typically run $1,900–$7,000 for a 1,500 sq ft attic upgrade R-30 to R-49 blown cellulose, with blown fiberglass loose-fill the dominant residential retrofit material at the IECC R-49 attic minimum. Wyoming's high-altitude combination of 8,000 annual heating degree days, the highest-elevation residential development in the continental U.S. across Jackson Hole and Cody at 6,000+ ft elevation, and 48-inch frost depth drives heating-dominant insulation upgrades statewide — R-49 blown-fiberglass attic plus R-20 wall cavity insulation plus continuous polyiso exterior on retrofits is now the dominant Wyoming spec, with Jackson and Teton Village ski-town residential properties additionally requiring R-60 attic upgrades and triple-pane glazing on every premium retrofit to manage extreme winter heating costs.

State Wyoming
Cities Covered 2
Typical 1,500 sq ft attic upgrade R-30 to R-49 blown cellulose $1,900 – $7,000
BLS insulation worker wage $21.42/hr

Wyoming energy code & climate-load drivers

  • IECC climate zone: 6B-7
  • Required attic R-value: R-49 (IECC 2021 prescriptive minimum)
  • Required wall R-value: R-20 (above-grade wood-frame)
  • Adopted energy code basis: IECC 2018 — prior cycle, R-49 attic + R-20 wall, advisory air-sealing
  • Stretch code available: No — IECC base code only
  • Annual heating + cooling load: 8,000 HDD / 400 CDD
  • Vapor barrier requirement: Warm-side vapor retarder required (typical IECC zones 5+)
  • Dominant attic insulation material: Blown fiberglass loose-fill — dominant in cooling-dominant Sun Belt
  • IRA HOMES + HEER rebate status: Planning — IRA implementation plan filed with DOE, rebates pending state legislature

Wyoming licensing, rebates & permits

  • License status: No statewide trade license
  • License board: No statewide insulation license; Cheyenne, Casper, Jackson issue municipal contractor credentials (official site)
  • Permit: permit required for attic insulation retrofit per Wyoming State Building Code; municipal contractor registration required in Cheyenne and Jackson

How attic insulation upgrade costs vary in Wyoming

State-specific code or insurance rule: Wyoming Statute §35-9 grants Wyoming municipalities optional residential energy code adoption authority — Wyoming has no statewide residential energy code mandate (one of only a handful of states with no state energy code), leaving Cheyenne, Casper, Jackson, and Laramie to adopt voluntary IECC 2018 or higher at municipal discretion, and the Wyoming Energy Authority is the planned IRA HOMES + HEER administrator pending 2026 launch with Rocky Mountain Power Wyoming and Black Hills Energy Wyoming residential weatherization programs.

Cities in Wyoming

Compare attic insulation upgrade pricing for 2 cities across Wyoming.

Casper, WY

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Cheyenne, WY

Compare local attic insulation upgrade pricing in Cheyenne.

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Pricing ranges reflect Wyoming market labor (BLS OEWS insulation worker (floor/ceiling/wall) mean $21.42/hr) and Woogoro regional cost modeling. For the most localized estimate, see your nearest city page above.