Spray Foam Insulation cost: Concord vs Dover (2026)
Concord and Dover are a near-perfect match on spray foam insulation cost in 2026, both landing around $4,150.
Concord NH
Typically around $4,150
Dover NH
Typically around $4,150
Concord vs Dover: full breakdown
| Factor | Concord | Dover |
|---|---|---|
| Typical 2026 cost | $4,150 | $4,150 |
| Estimated range | $1,650–$6,650 | $1,650–$6,650 |
| Labor index (vs US) | ×1.04 | ×1.04 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.06 | ×1.06 |
| Local permit | None | None |
| Labor share | $2,300 | $2,300 |
| Materials/equipment | $1,850 | $1,850 |
Treat these as 2026 localized estimates for spray foam insulation, not quotes from a contractor.
Basically a tie — focus on the contractor
With no real price gap on spray foam insulation, the choice comes down to contractor quality and timing, not which city you're in.
Spray foam insulation by type: Concord vs Dover
We localize each spray foam insulation type separately for both metros, applying the same labor, climate and permit adjustments each time, so you're comparing like for like.
| Type | Concord | Dover |
|---|---|---|
| Open-cell | $1,650–$5,000 | $1,650–$5,000 |
| Closed-cell | $2,750–$7,750 | $2,750–$7,750 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national spray foam insulation range for local labor, climate and permits.
Spray foam insulation by area: Concord vs Dover
Spray foam is priced by board foot (1 sq ft at 1 inch thick), which works out to about $1.50–$5 per sq ft of surface installed depending on foam type and thickness. Closed-cell costs more but adds twice the R-value per inch.
| Size | Concord | Dover |
|---|---|---|
| 500 sq ft | $1,000–$2,650 | $1,000–$2,650 |
| 1,000 sq ft | $1,650–$4,450 | $1,650–$4,450 |
| 1,500 sq ft | $2,450–$6,100 | $2,450–$6,100 |
| 2,000+ sq ft | $3,100–$7,200 | $3,100–$7,200 |
All figures are 2026 localized planning estimates for spray foam insulation — get an actual quote before you commit.
Cheapest time for spray foam insulation in either city
Everyone waits until fall to insulate, which is exactly why fall costs the most. Spring and summer are quieter for installers and often catch a fresh year's rebate budget before it runs dry.
How much insulation is worth paying for?
Three choices shape an insulation budget — target R-value, whether air-sealing is included, and material type. Our editors weigh how each affects payback.
The air-sealing case
Insulation without air-sealing underperforms. Sealing leaks first is cheap and often delivers more comfort per dollar than thicker insulation alone — make sure it's in the scope.
The R-value case
Insulate to the DOE recommendation for your climate zone — under-insulating to save money leaves comfort and energy savings on the table that would have paid the job back.
The rebate case
Insulation has some of the best rebate math in home improvement — utility and state programs can cover a solid share (the federal 25C credits ended Dec 2025). Check DSIRE before you book and time it to a fresh rebate budget.
Don't half-do an insulation job to save money upfront: seal the air leaks first, insulate to the DOE target for your zone, and stack the rebates. The full scope pays back faster than the partial one.
Concord vs Dover
Is spray foam insulation cheaper in Concord or Dover?
spray foam insulation costs about the same in both — roughly $4,150 in each city.
Why does spray foam insulation cost more in Dover than Concord?
The main driver is local labor rates: Dover's labor index is 1.04 versus 1.04 in Concord. Climate zone (cold vs cold) also shift the total.
How much is spray foam insulation in Concord, NH?
spray foam insulation in Concord runs $1,650–$6,650 as of 2026 — most jobs land near $4,150.
When is the cheapest time to buy spray foam insulation — and does it differ by city?
The best window is the same in both Concord and Dover: Spring and summer, when demand drops and installers discount to keep crews busy — typically 5–10% off peak pricing. The most expensive time anywhere is an emergency replacement during the pre-winter fall rush.
Should I choose where to live based on spray foam insulation cost?
No — the cost is essentially identical between Concord and Dover. Base the decision on the things that actually vary: contractor reputation, scope, equipment tier and timing.
Compare spray foam insulation in other cities
Updated June 2026 · By Serhat Özçelik