Spray Foam Insulation Cost Calculator

Estimate the cost of spray foam insulation based on area size, foam type, and thickness.

Last updated: March 25, 2026

Spray Foam Insulation Cost Calculator

Estimate the cost of spray foam insulation based on area size, foam type, and thickness.

Area to Insulate(sq ft)

1003,000 sq ft

Your State

Quality Tier

Project Options

Estimated Total

$3,350

Cost per sq ft$3

vs National Average-4%

Itemized Breakdown

Materials

$1,800

Labor

$1,300

Permits

$100

Excess Foam Trimming and Finishing

$150

Total$3,350

This calculator provides estimates based on national averages adjusted for your region. Actual costs may vary significantly based on specific project conditions, contractor availability, material prices, and local market factors. Always get at least 3 quotes from licensed, insured contractors before starting your project.

Want the full picture?

Read our complete Spray Foam Insulation cost guide with material comparisons, contractor tips, savings strategies, and regional pricing data.

View Full Cost Guide

Quick Cost Reference

National Average$3,500

Typical Range$1,500 - $6,500

Low End$1,200

High End$10,000

Cost by Tier

Budget

Open-cell spray foam in an open attic floor or crawl space, 500-800 sq ft, 3-4 inches of coverage (R-13)

$1,500

Mid-Range

Closed-cell spray foam on attic roof deck or basement walls, 800-1,200 sq ft, 2-3 inches of coverage (R-13 to R-19)

$3,500

Premium

Full closed-cell spray foam application on roof deck and walls, 1,200-1,500 sq ft, 4+ inches (R-26+), with thermal imaging verification

$6,500

Spray Foam Insulation Cost Calculator