What affects the price
- Square footage1,000 sqft $800-$1,500; 1,500 sqft $1,200-$2,500; 2,000+ sqft $1,800-$3,500.
- Existing R-valueAdding R-30 to bare attic cheaper than topping off R-19 to R-49.
- Air sealingAir seal BEFORE blow adds $400-$1,200 but doubles the insulation payback.
What's included
- Blown cellulose to R-49 (Ohio climate zone 5)
- Optional air sealing (rim joists, can lights, plumbing penetrations)
- Baffles for soffit ventilation
- Cleanup
When to call
Before winter heating season. Air seal first, then insulate — air sealing typically returns more savings than the insulation itself.
Related questions
How does the IRA insulation tax credit work?
The federal Energy Efficient Home Improvement Credit (IRA section 25C) covers 30% of the cost of qualifying insulation and air-sealing, capped at $1,200 per year (combined with windows / doors / other envelope upgrades).
What R-value should my Ohio attic have?
R-49 to R-60 for Ohio climate zone 5. That is about 14-18 inches of blown cellulose or 7-9 inches of closed-cell spray foam.
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