Spray Foam Insulation cost: Janesville vs Kenosha (2026)
Budget-wise, spray foam insulation in Janesville ($3,800) runs 7% less than in Kenosha ($4,050), a roughly $250 spread.
Janesville WI
Lower costTypically around $3,800
Kenosha WI
Typically around $4,050
Janesville vs Kenosha: full breakdown
| Factor | Janesville | Kenosha |
|---|---|---|
| Typical 2026 cost | $3,800 | $4,050 |
| Estimated range | $1,500–$6,100 | $1,600–$6,450 |
| Labor index (vs US) | ×0.96 | ×1.01 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.06 | ×1.06 |
| Local permit | None | None |
| Labor share | $2,100 | $2,250 |
| Materials/equipment | $1,700 | $1,800 |
All figures are 2026 localized planning estimates for spray foam insulation — get an actual quote before you commit.
How much should this gap actually matter?
7% is within noise for spray foam insulation — contractor selection and timing move the price more than which of these two metros you're in.
Spray foam insulation by type: Janesville vs Kenosha
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 | Janesville | Kenosha |
|---|---|---|
| Open-cell | $1,500–$4,550 | $1,600–$4,800 |
| Closed-cell | $2,550–$7,100 | $2,700–$7,500 |
Treat these as 2026 localized estimates for spray foam insulation, not quotes from a contractor.
Spray foam insulation by area: Janesville vs Kenosha
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 | Janesville | Kenosha |
|---|---|---|
| 500 sq ft | $900–$2,450 | $950–$2,550 |
| 1,000 sq ft | $1,500–$4,050 | $1,600–$4,300 |
| 1,500 sq ft | $2,250–$5,550 | $2,350–$5,900 |
| 2,000+ sq ft | $2,850–$6,600 | $3,000–$6,950 |
Treat these as 2026 localized estimates for spray foam insulation, not quotes from a contractor.
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 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.
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.
Janesville vs Kenosha
Is spray foam insulation cheaper in Janesville or Kenosha?
Janesville wins on price: spray foam insulation runs about $3,800 there versus $4,050 in Kenosha, a gap of roughly $250 (7%) as of 2026.
Why does spray foam insulation cost more in Kenosha than Janesville?
The main driver is local labor rates: Kenosha's labor index is 1.01 versus 0.96 in Janesville. Climate zone (cold vs cold) also shift the total.
How much is spray foam insulation in Janesville, WI?
In Janesville, spray foam insulation typically runs $1,500–$6,100 in 2026, with most homeowners paying around $3,800.
When is the cheapest time to buy spray foam insulation — and does it differ by city?
The best window is the same in both Janesville and Kenosha: 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?
That would be a stretch. $250 is a one-time difference, not an ongoing one, and off-season buying plus apples-to-apples bids in Kenosha 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