Spray Foam Insulation cost: North Peoria vs Rockford (2026)
The two metros aren't quite in sync on spray foam insulation: North Peoria sits 1% below Rockford, or roughly $3,750 versus $3,800 — about $50 apart.
North Peoria IL
Lower costTypically around $3,750
Rockford IL
Typically around $3,800
North Peoria vs Rockford: full breakdown
| Factor | North Peoria | Rockford |
|---|---|---|
| Typical 2026 cost | $3,750 | $3,800 |
| Estimated range | $1,500–$6,000 | $1,500–$6,050 |
| Labor index (vs US) | ×0.95 | ×0.95 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.06 | ×1.06 |
| Local permit | None | None |
| Labor share | $2,050 | $2,100 |
| Materials/equipment | $1,700 | $1,700 |
These are 2026 planning figures for spray foam insulation, localized to each city — not formal quotes.
Is the price difference a dealbreaker?
That 1% 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: North Peoria vs Rockford
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 | North Peoria | Rockford |
|---|---|---|
| Open-cell | $1,500–$4,500 | $1,500–$4,550 |
| Closed-cell | $2,500–$7,000 | $2,500–$7,050 |
These are 2026 planning figures for spray foam insulation, localized to each city — not formal quotes.
Spray foam insulation by area: North Peoria vs Rockford
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 | North Peoria | Rockford |
|---|---|---|
| 500 sq ft | $900–$2,400 | $900–$2,400 |
| 1,000 sq ft | $1,500–$4,000 | $1,500–$4,050 |
| 1,500 sq ft | $2,200–$5,500 | $2,200–$5,550 |
| 2,000+ sq ft | $2,800–$6,500 | $2,800–$6,550 |
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?
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
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.
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.
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.
North Peoria vs Rockford
Is spray foam insulation cheaper in North Peoria or Rockford?
In 2026, spray foam insulation is cheaper in North Peoria at about $3,750, versus $3,800 in Rockford — a difference of about $50 (1%).
Why does spray foam insulation cost more in Rockford than North Peoria?
Labor rates explain most of it — 0.95 in Rockford vs 0.95 in North Peoria. A cold climate versus cold accounts for the rest.
How much is spray foam insulation in North Peoria, IL?
spray foam insulation in North Peoria runs $1,500–$6,000 as of 2026 — most jobs land near $3,750.
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 North Peoria and Rockford, 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?
Rarely. The $50 difference is real but one-time, and you can often close most of it in Rockford by buying in the off-season and getting tighter, apples-to-apples bids. Ongoing factors — energy prices, climate and home condition — matter more over the life of the system.
Compare spray foam insulation in other cities
Updated June 2026 · By Serhat Özçelik