Home Insulation Cost & Quotes:
Attic, Wall & Air Sealing
Compare insulation scopes, R-value targets, air sealing, and current utility or state rebate requirements before choosing a contractor.
$1,200–$3,500
Typical Attic Project
15-25%
Bill Impact Est.
3–7 yrs
Average Payback
Rebate Check
Utility + State
Insulation Types & Costs Compared
The right insulation type depends on where you're insulating and whether you need air sealing too.
| Type | Installed Cost | R-Value | Best For |
|---|---|---|---|
| Blown-In (Attic) | $0.80–$1.50/sq ft | R-2.2 to R-3.8/in | Best value for attic upgrades |
| Batt (Walls/Floors) | $0.50–$1.80/sq ft | R-11 to R-21 | Open cavities, new construction |
| Spray Foam | $0.80–$3.50/sq ft | R-3.7 to R-7.0/in | Air sealing + insulation combo |
| Rigid Foam Board | $0.75–$2.00/sq ft | R-3.8 to R-6.5/in | Basement walls, exterior sheathing |
Current incentive eligibility varies by utility, state program, home condition, and whether pre-approval or an audit is required.
Where to Start: Highest ROI First
Attic Insulation
The single highest-impact project for most homes. Heat rises — an under-insulated attic wastes thousands per year.
Est. $200–$500/yrAir Sealing
Seal gaps around pipes, wiring, and framing before adding insulation. Air leaks can waste as much energy as leaving a window open.
Est. $150–$350/yrRim Joists & Crawl Space
Spray foam on rim joists delivers a fast payback (2–4 years). Full crawl space encapsulation eliminates moisture issues too.
Est. $100–$250/yrInsulation Guides & Resources
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