Cost guide · Updated 2026

How much does attic insulation cost?

Attic insulation costs $1 to $4 per square foot installed, or $1,000 to $2,700 for a typical attic, with a national average of about $1,800. Spray foam costs more, and some companies have a $1,500 to $2,000 minimum.

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National averages

Attic Insulation · 2026

Typical attic
$1,000–$2,700
1,500 sq ft attic
$1,500–$6,000
2,000 sq ft attic
$2,000–$8,000
Spray foam, attic floor
$1,100–$6,800

Typical, per attic

$1,000–$2,700

Sourced from published data

Typical price

$1,000–$2,700

per attic · source: HomeGuide

Price ranges

Typical attic$1,000–$2,700
1,500 sq ft attic$1,500–$6,000
2,000 sq ft attic$2,000–$8,000
Spray foam, attic floor$1,100–$6,800
Spray foam, rafters and roof deck$1,500–$9,000

National averages. Labor costs differ a lot from one area to the next, so use these to sanity-check a quote, then compare two or three local pros for the same job.

Attic Insulation prices, national averages
Job	Typical price
Typical atticHomeGuide	$1,000–$2,700
InstalledHomeGuide	$1–$4 per sq ft
1,500 sq ft atticHomeGuide	$1,500–$6,000
2,000 sq ft atticHomeGuide	$2,000–$8,000
Spray foam, attic floorHomeGuide	$1,100–$6,800
Spray foam, rafters and roof deckHomeGuide	$1,500–$9,000
Remove and replaceHomeGuide	$2–$6 per sq ft

What changes the price

Attic or wall size
Type: blown-in, batts or spray foam
Removing old insulation
Air sealing and access
Where you live. Local labor costs, demand and travel time move prices up or down from the national average.

How to pay less

Ask about utility rebates and tax credits before you sign.
Add insulation over the old layer when it's dry and clean, instead of paying for removal.
Air seal first. It often makes the new insulation work better for little extra cost.
Compare at least two or three quotes for the same scope. Pros on Job Hound never pay for leads, so no lead fee is built into their price.