How much does spray foam insulation cost per square foot?

We do not publish a flat per-square-foot price for spray foam insulation. Pricing varies by foam type, thickness, and site conditions. A Gold Star technician will confirm exact costs after an on-site assessment in homes across Garden City and Mineola.

Quick factors that change price:

• Open-cell vs closed-cell foam
• Target R-value and thickness
• Attic or wall access and prep
• Air sealing and ventilation needs
• Existing insulation removal

<br/> Updated: 2025-12-27 <br/>

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