Spray Foam Insulation cost: Beloit vs Madison (2026)
The two metros aren't quite in sync on spray foam insulation: Beloit sits 3% below Madison, or roughly $3,800 versus $3,900 — about $100 apart.
Beloit WI
Lower costTypically around $3,800
Madison WI
Typically around $3,900
Beloit vs Madison: full breakdown
| Factor | Beloit | Madison |
|---|---|---|
| Typical 2026 cost | $3,800 | $3,900 |
| Estimated range | $1,500–$6,100 | $1,550–$6,200 |
| Labor index (vs US) | ×0.96 | ×0.98 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.06 | ×1.06 |
| Local permit | None | None |
| Labor share | $2,100 | $2,150 |
| Materials/equipment | $1,700 | $1,750 |
Treat these as 2026 localized estimates for spray foam insulation, not quotes from a contractor.
Is the gap worth worrying about?
At 3%, this gap is small enough that it's usually swallowed by normal quote-to-quote variation for spray foam insulation — focus on the contractor, not the city.
Spray foam insulation by type: Beloit vs Madison
We localize each spray foam insulation type separately for both metros, applying the same labor, climate and permit adjustments each time, so you're comparing like for like.
| Type | Beloit | Madison |
|---|---|---|
| Open-cell | $1,500–$4,550 | $1,550–$4,650 |
| Closed-cell | $2,550–$7,100 | $2,600–$7,250 |
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: Beloit vs Madison
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 | Beloit | Madison |
|---|---|---|
| 500 sq ft | $900–$2,450 | $950–$2,500 |
| 1,000 sq ft | $1,500–$4,050 | $1,550–$4,150 |
| 1,500 sq ft | $2,250–$5,550 | $2,300–$5,700 |
| 2,000+ sq ft | $2,850–$6,600 | $2,900–$6,750 |
Spray foam insulation numbers here are 2026 planning ranges, adjusted per city — useful for budgeting, not a substitute for an actual quote.
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?
How much you spend on insulation and how fast it pays back come down to R-value, air-sealing and material. Our editors break down the trade-offs.
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.
The air-sealing case
Skip air-sealing and you're insulating around the very holes letting conditioned air leak out. Caulk, foam and weatherstripping are inexpensive and often return more felt comfort than a thicker blanket of insulation ever would — insist the crew handles the leaks before they bury them.
What makes insulation unusual is that the thorough version and the cheap version are the same version — seal first, meet the DOE R-value for your zone, and layer on the rebates. A partial job just pushes the payback date further out.
Beloit vs Madison
Is spray foam insulation cheaper in Beloit or Madison?
In 2026, spray foam insulation is cheaper in Beloit at about $3,800, versus $3,900 in Madison — a difference of about $100 (3%).
Why does spray foam insulation cost more in Madison than Beloit?
The main driver is local labor rates: Madison's labor index is 0.98 versus 0.96 in Beloit. Climate zone (cold vs cold) also shift the total.
How much is spray foam insulation in Beloit, WI?
spray foam insulation in Beloit runs $1,500–$6,100 as of 2026 — most jobs land near $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 Beloit and Madison: 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. $100 is a one-time difference, not an ongoing one, and off-season buying plus apples-to-apples bids in Madison 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