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How much does spray foam insulation cost per square foot?

Per-square-foot spray foam pricing is set after an on-site assessment. Final cost depends on attic access, square footage, target R-value, and any air sealing or prep work. A technician will measure your attic and confirm exact pricing on site. If R-38 attic insulation is appropriate, you can get an instant $0.20 per sqft rebate (up to $800) applied to your invoice. For attic insulation you may qualify for up to $1,200 in federal tax credits. Free Home Energy Efficiency Inspections are available.

Updated: 2025-12-10 00:00:00

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