New Hampshire Insulation Cost Calculator
Average insulation cost in New Hampshire ranges from $1,900 to $6,500 depending on insulation type, area size, and labor rates.
Reviewed by MyProjectCost Team
New Hampshire Insulation Cost Snapshot
| Item | New Hampshire Average |
|---|---|
| Spray Foam | $2.00-$4.50/sq ft |
| Blown-In Cellulose | $1.05-$2.50/sq ft |
| Fiberglass Batt | $0.68-$1.85/sq ft |
| Rigid Foam Board | $1.15-$2.90/sq ft |
| Labor Rate | $3-$6.50/sq ft |
| Typical Project | $1,900 – $6,500 |
Insulation Cost by Location in New Hampshire
| Location | Low | Average | High |
|---|---|---|---|
| Attic | $1,500 | $3,400 | $6,000 |
| Walls | $2,200 | $4,700 | $8,200 |
| Crawl Space | $1,200 | $2,700 | $4,700 |
| Basement | $1,700 | $3,700 | $6,500 |
Insulation Cost by City in New Hampshire
| City | Average Project Cost |
|---|---|
| Manchester | $4,000 |
| Nashua | $4,100 |
| Concord | $3,800 |
| Derry | $3,900 |
| Dover | $3,800 |
Insulation Costs in New Hampshire: What to Expect
New Hampshire insulation costs are above the national average. Harsh winters and New England labor rates drive costs up but energy savings are substantial.
New Hampshire winters are severe requiring high R-values. Many older New Hampshire homes lose enormous amounts of heat through under-insulated attics and walls.
Best Insulation Types for New Hampshire Homes
Blown-In Cellulose
Blown-in cellulose is one of the best insulation choices for New Hampshire homes, offering excellent coverage in attics and hard-to-reach spaces at $1.05-$2.50/sq ft per square foot installed. Made from recycled paper fiber treated for fire and pest resistance, cellulose fills gaps and settles evenly to block drafts specific to New Hampshire's climate. It's a top pick for homeowners adding insulation over existing material without major demolition.
Spray Foam
Spray foam delivers superior air sealing and insulation performance for New Hampshire homes at $2.00-$4.50/sq ft per square foot installed. Both open-cell and closed-cell spray foam expand to fill every crack and gap, making it ideal for New Hampshire's climate demands — whether extreme heat, cold, or humidity. The higher upfront cost pays off through 15–20% lower energy bills and a lifespan exceeding 80 years.
Dense Pack Cellulose
Dense Pack Cellulose insulation is a proven choice for New Hampshire homes, offering reliable performance suited to the region's climate and energy requirements. Local contractors familiar with New Hampshire's specific conditions can advise on the best installation approach for this material. Its combination of performance and value makes it worth considering as part of a comprehensive home insulation strategy in New Hampshire.
New Hampshire Insulation Rebates and Tax Credits
Eversource NH and Liberty Utilities offer rebates. Federal 30% tax credit applies.
Homeowners may also qualify for the federal Inflation Reduction Act tax credit of up to 30% (capped at $1,200) for qualifying insulation improvements.
New Hampshire Insulation Permit Requirements
Most New Hampshire insulation projects do not require a permit, though some municipalities may require one for spray foam. Typical costs $100-$500 if required. Check with your local building office before starting work.
New Hampshire Insulation Cost Factors
- Very harsh winters
- New England labor rates
- Old housing stock
- Coastal exposure
- High heating costs
FAQ — Insulation Cost in New Hampshire
How much does insulation cost in New Hampshire?
Most New Hampshire homeowners spend $1,900-$6,500 for insulation installation.
Is insulation more or less expensive in New Hampshire than the national average?
New Hampshire costs are about 17% above the national average.
What is the cheapest insulation option in New Hampshire?
Fiberglass batt at $0.68-$1.85 per square foot installed.
Related Calculators for New Hampshire Homeowners
Insulation Cost in Other States
Compare insulation costs across states to see how New Hampshire ranks nationally.