Spray Foam Insulation cost: Davenport vs Sioux City (2026)
There's essentially no price gap here: spray foam insulation runs close to $3,750 in both Davenport and Sioux City in 2026.
Davenport IA
Typically around $3,750
Sioux City IA
Typically around $3,750
Davenport vs Sioux City: full breakdown
| Factor | Davenport | Sioux City |
|---|---|---|
| Typical 2026 cost | $3,750 | $3,750 |
| Estimated range | $1,500–$6,000 | $1,500–$5,950 |
| Labor index (vs US) | ×0.94 | ×0.93 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.06 | ×1.06 |
| Local permit | None | None |
| Labor share | $2,050 | $2,050 |
| Materials/equipment | $1,700 | $1,700 |
All figures are 2026 localized planning estimates for spray foam insulation — get an actual quote before you commit.
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: Davenport vs Sioux City
Below, each spray foam insulation option is priced independently for both cities, with identical local labor, climate and permit logic applied — so the comparison holds up.
| Type | Davenport | Sioux City |
|---|---|---|
| Open-cell | $1,500–$4,500 | $1,500–$4,450 |
| Closed-cell | $2,500–$6,950 | $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: Davenport vs Sioux City
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 | Davenport | Sioux City |
|---|---|---|
| 500 sq ft | $900–$2,400 | $900–$2,400 |
| 1,000 sq ft | $1,500–$4,000 | $1,500–$3,950 |
| 1,500 sq ft | $2,200–$5,500 | $2,200–$5,450 |
| 2,000+ sq ft | $2,800–$6,450 | $2,750–$6,450 |
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 insulates in fall before winter, so that's the busy, full-price season. Booking in spring or summer catches off-peak pricing — and utility rebate budgets are often freshest early in the year.
How much insulation is worth paying for?
Where an insulation budget lands depends less on square footage than on three calls — the R-value you target, whether air-sealing rides along, and which material fills the cavity.
The air-sealing case
Blown-in or batt, insulation can only slow the heat that isn't already escaping through gaps and penetrations. Sealing those leaks costs little and frequently buys more comfort per dollar than piling on extra R-value, so confirm it's written into the scope.
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.
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.
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.
Davenport vs Sioux City
Is spray foam insulation cheaper in Davenport or Sioux City?
There's no meaningful difference: spray foam insulation runs about $3,750 in both places.
Why does spray foam insulation cost more in Sioux City than Davenport?
Labor rates explain most of it — 0.93 in Sioux City vs 0.94 in Davenport. A cold climate versus cold accounts for the rest.
How much is spray foam insulation in Davenport, IA?
Davenport homeowners can expect $1,500 to $6,000 for spray foam insulation in 2026, with $3,750 the typical number.
When is the cheapest time to buy spray foam insulation — and does it differ by city?
The best window is the same in both Davenport and Sioux City: 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?
Cost shouldn't be the deciding factor between Davenport and Sioux City — they land at nearly the same price. Contractor reputation, scope, equipment tier and timing matter more.
Compare spray foam insulation in other cities
Updated June 2026 · By Serhat Özçelik