Spray Foam Insulation cost: Mount Pleasant vs Spartanburg (2026)
Budget-wise, spray foam insulation in Mount Pleasant ($3,800) runs 4% more than in Spartanburg ($3,650), a roughly $150 spread.
Mount Pleasant SC
Typically around $3,800
Spartanburg SC
Lower costTypically around $3,650
Mount Pleasant vs Spartanburg: full breakdown
| Factor | Mount Pleasant | Spartanburg |
|---|---|---|
| Typical 2026 cost | $3,800 | $3,650 |
| Estimated range | $1,500–$6,100 | $1,450–$5,800 |
| Labor index (vs US) | ×0.99 | ×0.95 |
| Climate zone | Hot | Hot |
| Climate factor | ×1.02 | ×1.02 |
| Local permit | None | None |
| Labor share | $2,100 | $2,000 |
| Materials/equipment | $1,700 | $1,650 |
These are 2026 planning figures for spray foam insulation, localized to each city — not formal quotes.
Is the gap worth worrying about?
A 4% difference on spray foam insulation is minor — you'll typically see a wider spread just from getting multiple quotes in the same city, so don't let location drive the decision.
Spray foam insulation by type: Mount Pleasant vs Spartanburg
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 | Mount Pleasant | Spartanburg |
|---|---|---|
| Open-cell | $1,500–$4,550 | $1,450–$4,350 |
| Closed-cell | $2,550–$7,100 | $2,400–$6,800 |
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: Mount Pleasant vs Spartanburg
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 | Mount Pleasant | Spartanburg |
|---|---|---|
| 500 sq ft | $900–$2,450 | $850–$2,350 |
| 1,000 sq ft | $1,500–$4,050 | $1,450–$3,900 |
| 1,500 sq ft | $2,250–$5,600 | $2,150–$5,350 |
| 2,000+ sq ft | $2,850–$6,600 | $2,700–$6,300 |
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
Demand for insulation spikes every fall as winter approaches, pushing prices with it. Spring and summer avoid that crowd, and utility rebate pools are frequently still fresh that early in the year.
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 rebate case
Insulation carries some of the strongest incentive money in remodeling, with utility and state rebates covering a real portion of the cost since the federal 25C credit expired at the end of 2025. Look up what applies on DSIRE, then schedule the work while rebate funds are still unclaimed for the year.
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.
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.
Mount Pleasant vs Spartanburg
Is spray foam insulation cheaper in Mount Pleasant or Spartanburg?
Spartanburg comes out ahead here, at roughly $3,650 for spray foam insulation compared with $3,800 in Mount Pleasant — a 4% ($150) gap as of 2026.
Why does spray foam insulation cost more in Mount Pleasant than Spartanburg?
The main driver is local labor rates: Mount Pleasant's labor index is 0.99 versus 0.95 in Spartanburg. Climate zone (hot vs hot) also shift the total.
How much is spray foam insulation in Mount Pleasant, SC?
Mount Pleasant homeowners can expect $1,500 to $6,100 for spray foam insulation in 2026, with $3,800 the typical number.
When is the cheapest time to buy spray foam insulation — and does it differ by city?
No, the seasonal pattern is the same in Mount Pleasant and Spartanburg: 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?
Probably not. Yes, $150 is a real gap, but it's a one-time cost you can partly offset in Mount Pleasant with off-season timing and tighter bids. Long-term factors like energy prices and home condition matter more than this one number.
Compare spray foam insulation in other cities
Updated June 2026 · By Serhat Özçelik