Most attic insulation projects cost between $1,500 and $5,000 per job, with a typical price near $3,000. Prices vary by state and city, so the range below is a planning guide rather than a quote.
Typical attic insulation cost
$1,500 – $5,000
per job · typical $3,000
A general planning range, not a quotation.
Attic insulation cost breakdown
- Fiberglass batts$1,000 – $2,500typical $1,800
- Blown-in cellulose$1,500 – $3,500typical $2,500
- Spray foam$3,000 – $7,000typical $5,000
What Attic Insulation costs
Cost covers material (fiberglass, cellulose, or spray foam) and installation for a 1,200 sq ft attic. Includes air sealing and baffles. Spray foam costs more but offers higher R-value.
Costs by state
- Alabama
- Alaska
- Alberta
- Arizona
- Arkansas
- British Columbia
- California
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Manitoba
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Brunswick
- New Hampshire
- New Jersey
- New Mexico
- New York
- Newfoundland and Labrador
- North Carolina
- North Dakota
- Northwest Territories
- Nova Scotia
- Nunavut
- Ohio
- Oklahoma
- Ontario
- Oregon
- Pennsylvania
- Prince Edward Island
- Quebec
- Rhode Island
- Saskatchewan
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
- Yukon
Frequently asked questions
What R-value is recommended?
R-49 for most of the US. Check local codes. Older homes often have R-19 or less.
Does attic insulation pay for itself?
Yes, typically within 2–5 years through reduced heating and cooling bills.
Can I install it myself?
Blown-in cellulose requires a rental machine. Batts are DIY-friendly but less effective if gaps are left.