Get accurate spray foam insulation costs including materials, professional installation, and energy savings projections.
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R-3.7/in
$1.5/ft² installed
R-6.5/in
$2.25/ft² installed
R-5/in
$1.85/ft² installed
Why expert review matters
Every calculator is reviewed by certified professionals to ensure accuracy.David Chen's Master Mason, Licensed GC certification ensures professional-grade precision.
$1.00-1.50/ft²
R-3.8 per inch
$1.50-2.50/ft²
R-6.5 per inch
$0.50-1.00/ft²
Professional labor
$5,000-15,000
Average project
Open cell vs closed cell?
Closed cell is denser, stronger, and acts as vapor barrier
How long does spray foam last?
30-40 years with no settling or degradation
Is spray foam worth the cost?
Yes - 50% better R-value and air sealing than batts
Our spray foam cost calculator estimates your total project cost based on the foam type, application area, and required R-value. We factor in material costs, professional installation, and complexity adjustments for different application areas. The ROI calculation accounts for your climate region to provide accurate energy savings projections.
Formula
Thickness = Target R-Value ÷ R per inch
Cost = Area × Thickness × (Material + Labor) × Complexity