Attic Insulation Cost in Southwest Harbor, ME

In Southwest Harbor, attic insulation typically runs $1.50–$4.00 per sq ft, with the average homeowner paying around $2.50 per sq ft.

Cold · Southwest Harbor
IECC climate zone 6A
One of the coldest zones — R-60 attic and R-30 wall assemblies are standard on retrofits.
Rolling out in ME
ME HEEHRA rebates
ME's HEEHRA program is being rolled out — your matched partner can confirm current eligibility.
Federal · State · Utility
Stack up to $1,200+ in incentives
Federal 25C credit up to $1,200/yr, plus ME HEEHRA rebates rolling out
Get Exact QuoteCall (615) 685-5450

Sample project estimates

Rough budgeting based on typical Southwest Harbor pricing.

Project sizeLowAverageHigh
800 sq ft$1,200$2,000$3,200
1,500 sq ft$2,250$3,750$6,000
2,400 sq ft$3,600$6,000$9,600

What affects attic insulation cost in Southwest Harbor

  • Project size and access: larger projects cost more in total but less per unit. Hard access (steep roofs, low crawl space) adds labor.
  • Final R-value or thickness: R-49 attics cost more than R-30, but qualify for higher rebates.
  • Removal of old insulation: contaminated or damaged material needs to come out first.
  • Air sealing scope: bundling air sealing with insulation is cheaper than two separate visits.
  • Local demand: peak winter and summer months in Southwest Harbor can push prices 10–15% higher.

Rebates & tax credits

Most Southwest Harbor homeowners cut their out-of-pocket cost with the federal 25C tax credit (30% of materials, up to $1,200/year) and ME state and utility rebates.

How to get an accurate quote

  1. Submit your project details using the form on this page.
  2. A local Southwest Harbor insulation contractor follows up to schedule a free measurement.
  3. You receive a written quote with final R-value, scope, and price.
  4. Compare 2 quotes side by side before committing.

Related

Compare attic insulation vs. alternatives

Common questions

Short answers about how we match attic insulation cost in Southwest Harbor homeowners with vetted local insulation contractors.

Ready for exact attic insulation pricing in Southwest Harbor?

Get 2 free competitive quotes from local Southwest Harbor contractors — or keep researching before you commit.

Get 2 Free QuotesCall (615) 685-5450