Insulation (Spray Foam) Cost

Apply spray foam insulation for superior R-value and air sealing in walls, attics, and crawlspaces.

Low Estimate

$3,000

Mid-Range

$8,000

High End

$18,000

Avg ROI

70%

Duration: 1-3 days
DIY: Hard
Permits: Required
ROI: 70%

Interactive Cost Estimator

50 sq ft1,000 sq ft

Mid-grade materials, good quality fixtures, standard options.

Estimated Total Cost

$7,680

Based on 200 sq ft at mid quality. Actual costs vary by location and contractor.

Cost Breakdown

Labor35%

Approx. $2,800 at mid-range pricing

Materials65%

Approx. $5,200 at mid-range pricing

Labor-heavy projects (with high labor costs) benefit most from getting multiple contractor bids. You can save on materials-heavy projects by sourcing materials yourself at contractor pricing.

What Affects the Price

  • 1Area size
  • 2Foam type
  • 3Existing insulation
  • 4Access
  • 5R-value target

Popular Upgrades

  • Closed-cell foam
  • Open-cell foam
  • Hybrid system

Discuss upgrades with your contractor before finalizing the quote. Some upgrades are cheaper to include during initial construction than to add later.

DIY vs. Hire a Pro

Hard DIY Project

Professional installation strongly recommended.

DIY Advantages

  • • Save 35% on labor costs ($2,800 at mid-range)
  • • Control over timeline and material selection
  • • Satisfaction of completing the project yourself
  • • Flexibility to work in phases

Pro Advantages

  • • Guaranteed workmanship and professional finish
  • • Proper permits and code compliance
  • • Access to trade pricing on materials
  • Required for safety and code compliance

Explore All 120 Project Cost Guides

Compare costs across every major home improvement category — kitchens, baths, roofing, flooring, HVAC, additions, and landscaping.

View All Project Costs

Frequently Asked Questions

Related Calculators