Spray Foam Insulation cost: Dubuque vs Sioux City (2026)
Budget-wise, spray foam insulation in Dubuque ($3,650) runs 3% less than in Sioux City ($3,750), a roughly $100 spread.
Dubuque IA
Lower costTypically around $3,650
Sioux City IA
Typically around $3,750
Dubuque vs Sioux City: full breakdown
| Factor | Dubuque | Sioux City |
|---|---|---|
| Typical 2026 cost | $3,650 | $3,750 |
| Estimated range | $1,450–$5,850 | $1,500–$5,950 |
| Labor index (vs US) | ×0.92 | ×0.93 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.06 | ×1.06 |
| Local permit | None | None |
| Labor share | $2,000 | $2,050 |
| Materials/equipment | $1,650 | $1,700 |
Treat these as 2026 localized estimates for spray foam insulation, not quotes from a contractor.
How much should this gap actually matter?
That 3% gap is small — for spray foam insulation it's usually less than the spread between two local contractors' quotes, so the metro matters far less than who you hire and when you buy.
Spray foam insulation by type: Dubuque vs Sioux City
Every spray foam insulation type gets its own localized price for each metro, using the same labor, climate and permit adjustments — a true apples-to-apples comparison.
| Type | Dubuque | Sioux City |
|---|---|---|
| Open-cell | $1,450–$4,400 | $1,500–$4,450 |
| Closed-cell | $2,450–$6,850 | $2,500–$6,950 |
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: Dubuque 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 | Dubuque | Sioux City |
|---|---|---|
| 500 sq ft | $900–$2,350 | $900–$2,400 |
| 1,000 sq ft | $1,450–$3,900 | $1,500–$3,950 |
| 1,500 sq ft | $2,150–$5,400 | $2,200–$5,450 |
| 2,000+ sq ft | $2,750–$6,350 | $2,750–$6,450 |
These are 2026 planning figures for spray foam insulation, localized to each city — not formal quotes.
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?
Insulation is one of the few home upgrades where spending more can genuinely pay for itself. Our editors on the choices that decide both cost and payback.
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 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 R-value case
The DOE publishes a target R-value for every climate zone, and there's a reason to reach it: stopping short shaves a little off install day but forfeits years of lower energy bills and steadier indoor temperatures. Under-insulating is the one shortcut here that never actually pays.
Of every home upgrade, insulation rewards doing it right the most: air-seal first, meet the DOE R-value for your climate zone, and use the rebates on the table. Cutting the scope here just delays the payback.
Dubuque vs Sioux City
Is spray foam insulation cheaper in Dubuque or Sioux City?
Yes — Sioux City costs more. Expect around $3,750 for spray foam insulation there against $3,650 in Dubuque, about $100 (3%) apart in 2026.
Why does spray foam insulation cost more in Sioux City than Dubuque?
It comes down to labor: Sioux City indexes at 0.93 against Dubuque's 0.92. The cold-vs-cold climate difference adds to the gap.
How much is spray foam insulation in Dubuque, IA?
Expect to pay $1,450 to $5,850 for spray foam insulation in Dubuque in 2026, averaging around $3,650.
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 Dubuque and Sioux City, 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 Sioux City 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