Spray Foam Insulation cost: Duluth vs Saint Paul (2026)
Duluth runs 17% lower than Saint Paul for spray foam insulation — expect around $3,750 in Duluth against $4,400 in Saint Paul, a difference of about $650.
Duluth MN
Lower costTypically around $3,750
Saint Paul MN
Typically around $4,400
Duluth vs Saint Paul: full breakdown
| Factor | Duluth | Saint Paul |
|---|---|---|
| Typical 2026 cost | $3,750 | $4,400 |
| Estimated range | $1,500–$6,000 | $1,750–$7,000 |
| Labor index (vs US) | ×0.94 | ×1.1 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.06 | ×1.06 |
| Local permit | None | None |
| Labor share | $2,050 | $2,400 |
| Materials/equipment | $1,700 | $2,000 |
These are 2026 planning figures for spray foam insulation, localized to each city — not formal quotes.
How much should this gap actually matter?
17% (about $650) is enough to notice on a spray foam insulation budget. Timing the purchase for the off-season and pushing for an apples-to-apples bid in Saint Paul can close much of that gap.
Spray foam insulation by type: Duluth vs Saint Paul
Each spray foam insulation option, priced separately for both metros — the same local labor, climate and permit adjustments applied per city, so you can compare like for like.
| Type | Duluth | Saint Paul |
|---|---|---|
| Open-cell | $1,500–$4,500 | $1,750–$5,250 |
| Closed-cell | $2,500–$6,950 | $2,900–$8,150 |
All figures are 2026 localized planning estimates for spray foam insulation — get an actual quote before you commit.
Spray foam insulation by area: Duluth vs Saint Paul
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 | Duluth | Saint Paul |
|---|---|---|
| 500 sq ft | $900–$2,400 | $1,050–$2,800 |
| 1,000 sq ft | $1,500–$4,000 | $1,750–$4,650 |
| 1,500 sq ft | $2,200–$5,500 | $2,550–$6,400 |
| 2,000+ sq ft | $2,800–$6,450 | $3,250–$7,550 |
Treat these as 2026 localized estimates for spray foam insulation, not quotes from a contractor.
What insulation pros earn in each metro
Since labor accounts for around 55% of what a spray foam insulation job costs, it's the biggest lever behind any price gap between cities. What you're seeing below is actual BLS metro wage data for skilled installers — not a guess.
No BLS metro wage series for Duluth; we use Minnesota regional price parity instead.
Minneapolis-St. Paul-Bloomington metro · about 18% above the US average installer wage.
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
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?
R-value, air-sealing and material decide both the price and the payback. Our editors on the trade-offs.
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 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 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.
Duluth vs Saint Paul
Is spray foam insulation cheaper in Duluth or Saint Paul?
Duluth comes out ahead here, at roughly $3,750 for spray foam insulation compared with $4,400 in Saint Paul — a 17% ($650) gap as of 2026.
Why does spray foam insulation cost more in Saint Paul than Duluth?
Saint Paul's higher labor index (1.1 vs 0.94 in Duluth) is the biggest factor, with the cold/cold climate split playing a smaller role.
How much is spray foam insulation in Duluth, MN?
Expect to pay $1,500 to $6,000 for spray foam insulation in Duluth in 2026, averaging around $3,750.
When is the cheapest time to buy spray foam insulation — and does it differ by city?
The best window is the same in both Duluth and Saint Paul: 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?
Not really — the $650 gap is one-time, and smart timing and tighter quotes in Saint Paul can shrink it. Factors that compound over time, like energy prices and home condition, deserve more weight than a single upfront difference.
Compare spray foam insulation in other cities
Updated June 2026 · By Serhat Özçelik