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Attic Insulation Upgrade Cost in Utah (2026)

Attic insulation upgrades in Utah typically run $1,700–$6,400 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. Utah's combination of 5,500 annual heating degree days, intense Salt Lake City and Provo high-altitude UV exposure above 4,500 ft elevation, and Wasatch Front winter inversion 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 Utah spec, with Park City and Deer Valley high-altitude installs above 7,000 ft additionally requiring R-60 attic upgrades and triple-pane glazing on every premium ski-town residential retrofit.

State Utah
Cities Covered 19
Typical 1,500 sq ft attic upgrade R-30 to R-49 blown cellulose $1,700 – $6,400
BLS insulation worker wage $19.42/hr

Utah energy code & climate-load drivers

  • IECC climate zone: 5B-6B
  • 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 2021 — current cycle, full mandatory R-49 attic + R-20 wall + air-sealing requirements
  • Stretch code available: No — IECC base code only
  • Annual heating + cooling load: 5,500 HDD / 1,100 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: Live — IRA HOMES + HEER rebates currently available to residential homeowners

Utah licensing, rebates & permits

  • License status: Statewide license required
  • License board: Utah Division of Occupational and Professional Licensing — S350 (Insulation Contractor) (official site)
  • Permit: permit required for attic insulation retrofit per Utah Energy Conservation Code; DOPL S350 Insulation Contractor license required statewide on contracts above $3,000

How attic insulation upgrade costs vary in Utah

State-specific code or insurance rule: Utah Code §15A-3-201 imposes the Utah Energy Conservation Code statewide — Utah adopted IECC 2021 effective 2024 statewide alongside Colorado as the most current Mountain West energy code basis, and the Utah Division of Energy Development is one of the IRA HOMES + HEER program early-adopters providing rebates layered with Rocky Mountain Power and Dominion Energy Utah utility-funded weatherization programs covering attic insulation upgrades statewide.

Cities in Utah

Compare attic insulation upgrade pricing for 19 cities across Utah.

Bountiful, UT

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Draper, UT

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Layton, UT

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Lehi, UT

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Logan, UT

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Murray, UT

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Ogden, UT

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Orem, UT

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Provo, UT

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Riverton, UT

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Roy, UT

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Salt Lake City, UT

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Sandy, UT

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South Jordan, UT

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Spanish Fork, UT

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St George, UT

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Taylorsville, UT

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West Jordan, UT

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West Valley City, UT

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More state guides

Pricing ranges reflect Utah market labor (BLS OEWS insulation worker (floor/ceiling/wall) mean $19.42/hr) and Woogoro regional cost modeling. For the most localized estimate, see your nearest city page above.