Spray Foam Insulation cost: Florence vs Mount Pleasant (2026)
Budget-wise, spray foam insulation in Florence ($3,600) runs 6% less than in Mount Pleasant ($3,800), a roughly $200 spread.
Florence SC
Lower costTypically around $3,600
Mount Pleasant SC
Typically around $3,800
Florence vs Mount Pleasant: full breakdown
| Factor | Florence | Mount Pleasant |
|---|---|---|
| Typical 2026 cost | $3,600 | $3,800 |
| Estimated range | $1,450–$5,700 | $1,500–$6,100 |
| Labor index (vs US) | ×0.93 | ×0.99 |
| Climate zone | Hot | Hot |
| Climate factor | ×1.02 | ×1.02 |
| Local permit | None | None |
| Labor share | $2,000 | $2,100 |
| Materials/equipment | $1,600 | $1,700 |
Spray foam insulation numbers here are 2026 planning ranges, adjusted per city — useful for budgeting, not a substitute for an actual quote.
Is the gap worth worrying about?
At 6%, 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: Florence vs Mount Pleasant
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 | Florence | Mount Pleasant |
|---|---|---|
| Open-cell | $1,450–$4,300 | $1,500–$4,550 |
| Closed-cell | $2,400–$6,650 | $2,550–$7,100 |
Spray foam insulation numbers here are 2026 planning ranges, adjusted per city — useful for budgeting, not a substitute for an actual quote.
Spray foam insulation by area: Florence vs Mount Pleasant
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 | Florence | Mount Pleasant |
|---|---|---|
| 500 sq ft | $850–$2,300 | $900–$2,450 |
| 1,000 sq ft | $1,450–$3,800 | $1,500–$4,050 |
| 1,500 sq ft | $2,100–$5,250 | $2,250–$5,600 |
| 2,000+ sq ft | $2,650–$6,200 | $2,850–$6,600 |
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
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?
R-value, air-sealing and material decide both the price and the payback. Our editors on the trade-offs.
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.
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.
Air-seal before you insulate, hit the DOE-recommended R-value for your zone, and claim every rebate you're eligible for — insulation is a rare case where doing the full job is also the cheapest one, long-term.
Florence vs Mount Pleasant
Is spray foam insulation cheaper in Florence or Mount Pleasant?
Florence wins on price: spray foam insulation runs about $3,600 there versus $3,800 in Mount Pleasant, a gap of roughly $200 (6%) as of 2026.
Why does spray foam insulation cost more in Mount Pleasant than Florence?
Mount Pleasant's higher labor index (0.99 vs 0.93 in Florence) is the biggest factor, with the hot/hot climate split playing a smaller role.
How much is spray foam insulation in Florence, SC?
In Florence, spray foam insulation typically runs $1,450–$5,700 in 2026, with most homeowners paying around $3,600.
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 Florence and Mount Pleasant, 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?
Not really — the $200 gap is one-time, and smart timing and tighter quotes in Mount Pleasant 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