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Cost engine

How much does attic insulation cost?

National price ranges for attic insulation, the unit pricing contractors quote from, and what the same job costs across local markets.

Verified August 2026

Attic Insulation cost

$1,200 – $7,500

Most homeowners pay around $2,800 for attic insulation, or $1.20–$4.50 per sq ft of attic floor. Permit fees add $0–$150.

Price breakdown

Budget scope$1,200
Typical project$2,800
Premium / complex$7,500
per sq ft of attic floor$1.20 – $4.50
Permit fees$0 – $150
Timeline1 day of work

What drives the price

  • Attic square footage and existing R-value
  • Blown cellulose or fiberglass versus spray foam
  • Air sealing of penetrations before insulating
  • Attic access and headroom
  • Removal of contaminated existing insulation

Cost by city

Same scope, adjusted for local labor, material and permit pricing.

Insulation cost in Naples$1,500 – $9,300 · +24%Insulation cost in Miami$1,400 – $8,900 · +18%Insulation cost in Fort Lauderdale$1,400 – $8,600 · +14%Insulation cost in West Palm Beach$1,300 – $8,400 · +12%Insulation cost in Fort Myers$1,300 – $8,200 · +9%Insulation cost in Sarasota$1,300 – $8,100 · +8%Insulation cost in Venice$1,300 – $8,000 · +6%Insulation cost in Cape Coral$1,300 – $8,000 · +7%Insulation cost in Tampa$1,200 – $7,800 · +4%Insulation cost in St. Petersburg$1,200 – $7,700 · +3%Insulation cost in Clearwater$1,200 – $7,700 · +2%Insulation cost in Orlando$1,200 – $7,700 · +2%Insulation cost in Bradenton$1,300 – $7,900 · +5%Insulation cost in Port St. Lucie$1,200 – $7,700 · +2%Insulation cost in St. Augustine$1,200 – $7,500 · 0%Insulation cost in Port Charlotte$1,200 – $7,500 · 0%Insulation cost in Brandon$1,200 – $7,500 · 0%Insulation cost in Melbourne$1,200 – $7,400 · -1%Insulation cost in Kissimmee$1,200 – $7,400 · -2%Insulation cost in Jacksonville$1,200 – $7,200 · -4%Insulation cost in Lakeland$1,100 – $7,100 · -5%Insulation cost in Daytona Beach$1,200 – $7,400 · -2%Insulation cost in Pensacola$1,100 – $7,100 · -5%Insulation cost in Gainesville$1,100 – $7,100 · -6%Insulation cost in Tallahassee$1,100 – $7,000 · -7%

Frequently asked questions

What R-value does Florida require in the attic?

The Florida Energy Conservation Code generally calls for R-30 to R-38 in a vented attic for a residential retrofit. Check with your building department, since the requirement depends on assembly type.

Sources

Sources & verification

Last verified August 2026. Cost figures are modeled estimates based on national baselines adjusted for local labor and material pricing — they are not quotes. Permit rules change; confirm with the building department before starting work.