Spray Foam Insulation cost: Bangor vs Lewiston (2026)
The two metros aren't quite in sync on spray foam insulation: Bangor sits 3% below Lewiston, or roughly $3,900 versus $4,000 — about $100 apart.
Bangor ME
Lower costTypically around $3,900
Lewiston ME
Typically around $4,000
Bangor vs Lewiston: full breakdown
| Factor | Bangor | Lewiston |
|---|---|---|
| Typical 2026 cost | $3,900 | $4,000 |
| Estimated range | $1,550–$6,250 | $1,600–$6,400 |
| Labor index (vs US) | ×0.98 | ×1.01 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.06 | ×1.06 |
| Local permit | None | None |
| Labor share | $2,150 | $2,200 |
| Materials/equipment | $1,750 | $1,800 |
Treat these as 2026 localized estimates for spray foam insulation, not quotes from a contractor.
Is the price difference a dealbreaker?
3% is within noise for spray foam insulation — contractor selection and timing move the price more than which of these two metros you're in.
Spray foam insulation by type: Bangor vs Lewiston
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 | Bangor | Lewiston |
|---|---|---|
| Open-cell | $1,550–$4,700 | $1,600–$4,800 |
| Closed-cell | $2,600–$7,300 | $2,650–$7,450 |
These are 2026 planning figures for spray foam insulation, localized to each city — not formal quotes.
Spray foam insulation by area: Bangor vs Lewiston
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 | Bangor | Lewiston |
|---|---|---|
| 500 sq ft | $950–$2,500 | $950–$2,550 |
| 1,000 sq ft | $1,550–$4,150 | $1,600–$4,250 |
| 1,500 sq ft | $2,300–$5,750 | $2,350–$5,850 |
| 2,000+ sq ft | $2,900–$6,800 | $3,000–$6,950 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national spray foam insulation range for local labor, climate and permits.
Cheapest time for spray foam insulation in either city
The fall insulation rush drives prices up because everyone's thinking about the coming winter at once. Book in spring or summer instead, when demand is lower and rebate funds haven't been claimed yet.
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 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.
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.
Hit the DOE R-value for your zone, air-seal first, and stack the rebates. Insulation is one of the few upgrades where doing it fully is also the cheapest path to payback.
Bangor vs Lewiston
Is spray foam insulation cheaper in Bangor or Lewiston?
In 2026, spray foam insulation is cheaper in Bangor at about $3,900, versus $4,000 in Lewiston — a difference of about $100 (3%).
Why does spray foam insulation cost more in Lewiston than Bangor?
It comes down to labor: Lewiston indexes at 1.01 against Bangor's 0.98. The cold-vs-cold climate difference adds to the gap.
How much is spray foam insulation in Bangor, ME?
Expect to pay $1,550 to $6,250 for spray foam insulation in Bangor in 2026, averaging around $3,900.
When is the cheapest time to buy spray foam insulation — and does it differ by city?
Timing doesn't change by city here — Spring and summer is the cheapest window in both Bangor and Lewiston, saving roughly 5–10%. Avoid the pre-winter fall rush in either location, when emergency replacements push prices up.
Should I choose where to live based on spray foam insulation cost?
That would be a stretch. $100 is a one-time difference, not an ongoing one, and off-season buying plus apples-to-apples bids in Lewiston can close a good chunk of it. What matters more long-term is energy costs, climate and the condition of the home.
Compare spray foam insulation in other cities
Updated June 2026 · By Serhat Özçelik