Spray Foam Insulation cost: Blaine vs Duluth (2026)
Budget-wise, spray foam insulation in Blaine ($4,400) runs 17% more than in Duluth ($3,750), a roughly $650 spread.
Blaine MN
Typically around $4,400
Duluth MN
Lower costTypically around $3,750
Blaine vs Duluth: full breakdown
| Factor | Blaine | Duluth |
|---|---|---|
| Typical 2026 cost | $4,400 | $3,750 |
| Estimated range | $1,750–$7,000 | $1,500–$6,000 |
| Labor index (vs US) | ×1.1 | ×0.94 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.06 | ×1.06 |
| Local permit | None | None |
| Labor share | $2,400 | $2,050 |
| Materials/equipment | $2,000 | $1,700 |
Spray foam insulation numbers here are 2026 planning ranges, adjusted per city — useful for budgeting, not a substitute for an actual quote.
Is the gap worth worrying about?
That's a real $650 difference (17%) on spray foam insulation — worth factoring in, though off-season timing and a tighter quote in Blaine can narrow it.
Spray foam insulation by type: Blaine vs Duluth
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 | Blaine | Duluth |
|---|---|---|
| Open-cell | $1,750–$5,250 | $1,500–$4,500 |
| Closed-cell | $2,900–$8,150 | $2,500–$6,950 |
All figures are 2026 localized planning estimates for spray foam insulation — get an actual quote before you commit.
Spray foam insulation by area: Blaine vs Duluth
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 | Blaine | Duluth |
|---|---|---|
| 500 sq ft | $1,050–$2,800 | $900–$2,400 |
| 1,000 sq ft | $1,750–$4,650 | $1,500–$4,000 |
| 1,500 sq ft | $2,550–$6,400 | $2,200–$5,500 |
| 2,000+ sq ft | $3,250–$7,550 | $2,800–$6,450 |
These are 2026 planning figures for spray foam insulation, localized to each city — not formal quotes.
What insulation pros earn in each metro
With labor making up about 55% of a spray foam insulation job, wage differences between metros do most of the work here. These figures are real BLS OEWS installer wages, not modeled estimates.
Minneapolis-St. Paul-Bloomington metro · about 18% above the US average installer wage.
No BLS metro wage series for Duluth; we use Minnesota regional price parity instead.
Source: U.S. Bureau of Labor Statistics, OEWS metro wages for HVAC installers (used as a trade-labor index).
Cheapest time for spray foam insulation in either city
Because most homeowners wait for the fall pre-winter panic, that's when prices peak. Getting it done in spring or summer means less competition and, often, an untapped rebate budget.
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 rebate case
Few home projects come with rebate support like insulation does — utility and state programs routinely offset a meaningful slice of the bill (the federal 25C credit closed in December 2025). Run your address through DSIRE first, and book when a program's yearly budget has just refilled.
The air-sealing case
Skip air-sealing and you're insulating around the very holes letting conditioned air leak out. Caulk, foam and weatherstripping are inexpensive and often return more felt comfort than a thicker blanket of insulation ever would — insist the crew handles the leaks before they bury them.
The R-value case
Aim for the R-value the DOE assigns your zone, not a round number that sounds close enough. Every point you fall short is comfort you don't feel and utility savings you never bank — savings that would have covered the extra material several times over.
Air-seal before you insulate, hit the DOE-recommended R-value for your zone, and claim every rebate you're eligible for — insulation is a rare case where doing the full job is also the cheapest one, long-term.
Blaine vs Duluth
Is spray foam insulation cheaper in Blaine or Duluth?
Duluth comes out ahead here, at roughly $3,750 for spray foam insulation compared with $4,400 in Blaine — a 17% ($650) gap as of 2026.
Why does spray foam insulation cost more in Blaine than Duluth?
It comes down to labor: Blaine indexes at 1.1 against Duluth's 0.94. The cold-vs-cold climate difference adds to the gap.
How much is spray foam insulation in Blaine, MN?
Expect to pay $1,750 to $7,000 for spray foam insulation in Blaine in 2026, averaging around $4,400.
When is the cheapest time to buy spray foam insulation — and does it differ by city?
It doesn't vary by location — Spring and summer is the discount window in both Blaine and Duluth (roughly 5–10% off), while the pre-winter fall rush tends to be the most expensive in either city.
Should I choose where to live based on spray foam insulation cost?
That would be a stretch. $650 is a one-time difference, not an ongoing one, and off-season buying plus apples-to-apples bids in Blaine 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