Spray Foam Insulation cost: Carrollton vs San Antonio (2026)
In 2026, spray foam insulation is about 3% more expensive in Carrollton than in San Antonio. Most homeowners pay around $3,750 in Carrollton versus $3,650 in San Antonio — a gap of roughly $100.
Carrollton TX
Typically around $3,750
San Antonio TX
Lower costTypically around $3,650
Carrollton vs San Antonio: full breakdown
| Factor | Carrollton | San Antonio |
|---|---|---|
| Typical 2026 cost | $3,750 | $3,650 |
| Estimated range | $1,500–$5,950 | $1,450–$5,850 |
| Labor index (vs US) | ×0.97 | ×0.95 |
| Climate zone | Hot | Hot |
| Climate factor | ×1.02 | ×1.02 |
| Local permit | None | None |
| Labor share | $2,050 | $2,000 |
| Materials/equipment | $1,700 | $1,650 |
Spray foam insulation numbers here are 2026 planning ranges, adjusted per city — useful for budgeting, not a substitute for an actual quote.
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: Carrollton vs San Antonio
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 | Carrollton | San Antonio |
|---|---|---|
| Open-cell | $1,500–$4,450 | $1,450–$4,350 |
| Closed-cell | $2,500–$6,950 | $2,450–$6,800 |
Treat these as 2026 localized estimates for spray foam insulation, not quotes from a contractor.
Spray foam insulation by area: Carrollton vs San Antonio
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 | Carrollton | San Antonio |
|---|---|---|
| 500 sq ft | $900–$2,400 | $850–$2,350 |
| 1,000 sq ft | $1,500–$3,950 | $1,450–$3,900 |
| 1,500 sq ft | $2,200–$5,450 | $2,150–$5,350 |
| 2,000+ sq ft | $2,800–$6,450 | $2,700–$6,300 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national spray foam insulation range for local labor, climate and permits.
What insulation pros earn in each metro
Labor is about 55% of a spray foam insulation bill, so local wages drive most of the gap. These are real metro hourly wages for skilled installers (BLS OEWS), not estimates.
Dallas-Fort Worth-Arlington metro · about 5% below the US average installer wage.
San Antonio-New Braunfels metro · about 9% below the US average installer wage.
Source: U.S. Bureau of Labor Statistics, OEWS metro wages for HVAC installers (used as a trade-labor index).
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?
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 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.
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.
Carrollton vs San Antonio
Is spray foam insulation cheaper in Carrollton or San Antonio?
Yes — Carrollton costs more. Expect around $3,750 for spray foam insulation there against $3,650 in San Antonio, about $100 (3%) apart in 2026.
Why does spray foam insulation cost more in Carrollton than San Antonio?
Carrollton's higher labor index (0.97 vs 0.95 in San Antonio) is the biggest factor, with the hot/hot climate split playing a smaller role.
How much is spray foam insulation in Carrollton, TX?
In Carrollton, spray foam insulation typically runs $1,500–$5,950 in 2026, with most homeowners paying around $3,750.
Do insulation pros really charge more in one city?
Yes — and the wage data shows it. A skilled installer earns about $29.7/hr in the Dallas-Fort Worth-Arlington area versus $28.4/hr around San Antonio-New Braunfels (BLS metro wage data). Since labor is roughly 55% of a spray foam insulation job, that wage gap is the biggest reason the installed prices differ.
When is the cheapest time to buy spray foam insulation — and does it differ by city?
No, the seasonal pattern is the same in Carrollton and San Antonio: book during Spring and summer for about 5–10% in savings. The pre-winter fall rush is the priciest stretch in both cities, mostly due to emergency replacements.
Should I choose where to live based on spray foam insulation cost?
Not really — the $100 gap is one-time, and smart timing and tighter quotes in Carrollton can shrink it. Factors that compound over time, like energy prices and home condition, deserve more weight than a single upfront difference.
Compare spray foam insulation in other cities
Updated June 2026 · By Serhat Özçelik