Basic
$3.72 – $7.44 per sq ft
About 1-1/2 in. spray polyurethane foam (about R-9) with acrylic elastomeric coating in two coats

Rendering: BuildX
Spray polyurethane foam (SPF) roof system on a low-slope roof, foam plus protective elastomeric coating, priced per square foot of roof.
SPF Roof in Boston, Massachusetts typically costs $4.38 to $8.76 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Prices in Boston are 14.0% higher than the national average for spf roof.
National average: $4 – $8 per sq ft
$3.72 – $7.44 per sq ft
About 1-1/2 in. spray polyurethane foam (about R-9) with acrylic elastomeric coating in two coats
$4.38 – $8.76 per sq ft
About 1-1/2 in. spray foam (about R-9) with silicone elastomeric coating, granules on walk paths
$5.47 – $11 per sq ft
About 1-1/2 in. spray foam (about R-9) with silicone base and topcoat, granules broadcast for durability
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $1.80 – $3.60 | sq ft |
| Labor | labor | $1.78 – $3.56 | sq ft |
| Supplies & Other | supplies | $0.48 – $0.96 | sq ft |
| Equipment & Disposal | equipment | $0.32 – $0.64 | sq ft |
Depth gauge probing the foam thickness on a roof
Rendering: BuildX
Find a pro to do thisWhite elastomeric coating rolled over cured roof foam
Rendering: BuildX
Find a pro to do thisLabor costs in Boston run proportionally higher than materials, which may favor material-heavy solutions.
Connect with local spf roof contractors in Boston for personalized quotes based on your specific project.