Attic Insulation Cost in Maine:
R-Values, Air Sealing & Quotes
Average attic insulation cost in Maine: $1,400–$3,500. Recommended R-value: R-60 to R-80 (attic). Compare air sealing, ventilation, warranty, and rebate assumptions.
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$1,400–$3,500
Avg. Attic Project Cost
$400–$800/yr
Annual Energy Savings
R-60 to R-80 (attic)
Recommended R-Value
2–5 years
Typical Payback
Best Insulation Approach for Maine
Recommended: Comprehensive air sealing + attic blown-in to R-60+
Maine has one of the longest heating seasons in the contiguous US. Efficiency Maine provides strong rebates and technical assistance. Many older Maine homes have virtually no wall insulation and inadequate attic insulation.
| Project Type | Typical Cost | Operating Impact | Payback |
|---|---|---|---|
| Attic blown-in (R-49) | $1,000–$2,800 | $200–$450/yr | 3–6 yrs |
| Air sealing package | $400–$1,200 | $150–$350/yr | 1–4 yrs |
| Rim joist spray foam | $400–$900 | $100–$200/yr | 2–5 yrs |
| Wall insulation (existing) | $1,500–$4,000 | $150–$350/yr | 5–15 yrs |
| Crawl space encapsulation | $3,000–$7,000 | $200–$400/yr | 8–20 yrs |
Maine Insulation Rebates & Tax Credits
Current insulation rebate eligibility should be verified
Efficiency Maine Home Energy Savings Program (up to $3,500)
Weatherization Assistance Program
Federal credit rules changed after 2025; verify current IRS rules
Programs change often. Ask each insulation contractor to confirm current rebate and tax credit rules before you sign.
Insulation Quotes by City in Maine
Compare Insulation Quotes in Maine
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