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Attic Insulation Upgrade Cost in Mississippi (2026)

Attic insulation upgrades in Mississippi typically run $1,300–$4,400 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-38 attic minimum. Mississippi's combination of 2,300 annual cooling degree days, 80%+ year-round humidity, and persistent Gulf Coast humidity from Bay St. Louis to Pascagoula drives a cooling-dominant insulation profile statewide — radiant-barrier-plus-blown-fiberglass attic systems plus closed-cell spray foam at the roofline are now the dominant Mississippi retrofit spec, with hurricane-zone homes additionally requiring NOA-approved insulation product fastening schedules and continuous Tyvek-wrapped wall cavity barriers on every coastal Mississippi home.

State Mississippi
Cities Covered 6
Typical 1,500 sq ft attic upgrade R-30 to R-49 blown cellulose $1,300 – $4,400
BLS insulation worker wage $16.42/hr

Mississippi energy code & climate-load drivers

  • IECC climate zone: 2A-3A
  • Required attic R-value: R-38 (IECC 2021 prescriptive minimum)
  • Required wall R-value: R-13 (above-grade wood-frame)
  • Adopted energy code basis: IECC 2009 — oldest active cycle, R-38/R-49 attic + R-13 wall
  • Stretch code available: No — IECC base code only
  • Annual heating + cooling load: 2,600 HDD / 2,300 CDD
  • Vapor barrier requirement: No statewide vapor retarder rule — climate zone determines
  • 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

Mississippi licensing, rebates & permits

  • License status: Statewide license required
  • License board: Mississippi State Board of Contractors — Residential Builder or Specialty (official site)
  • Permit: no permit required for attic insulation retrofit on existing residential; MSBC residential license required above $50,000 contract or $10,000 in annual gross

How attic insulation upgrade costs vary in Mississippi

State-specific code or insurance rule: Mississippi Code §17-2-1 grants Mississippi municipalities optional residential energy code adoption authority — Mississippi has no statewide residential energy code mandate (the only Gulf Coast state with no state-level energy code), leaving Jackson, Hattiesburg, and Gulf Coast municipalities to adopt voluntary IECC 2009 or higher at municipal discretion, the lowest residential energy code framework in the country and forcing voluntary above-code insulation upgrades through utility-incentive Entergy Mississippi and Mississippi Power programs rather than statewide code mandates.

Cities in Mississippi

Compare attic insulation upgrade pricing for 6 cities across Mississippi.

Biloxi, MS

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Gulfport, MS

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Hattiesburg, MS

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Jackson, MS

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Meridian, MS

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Southaven, MS

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Pricing ranges reflect Mississippi market labor (BLS OEWS insulation worker (floor/ceiling/wall) mean $16.42/hr) and Woogoro regional cost modeling. For the most localized estimate, see your nearest city page above.