Spray Foam Insulation cost: Clarksville vs Kingsport (2026)
Clarksville runs 3% higher than Kingsport for spray foam insulation — expect around $3,600 in Clarksville against $3,500 in Kingsport, a difference of about $100.
Clarksville TN
Typically around $3,600
Kingsport TN
Lower costTypically around $3,500
Clarksville vs Kingsport: full breakdown
| Factor | Clarksville | Kingsport |
|---|---|---|
| Typical 2026 cost | $3,600 | $3,500 |
| Estimated range | $1,450–$5,700 | $1,400–$5,550 |
| Labor index (vs US) | ×0.95 | ×0.92 |
| Climate zone | Mixed | Mixed |
| Climate factor | ×1 | ×1 |
| Local permit | None | None |
| Labor share | $2,000 | $1,950 |
| Materials/equipment | $1,600 | $1,550 |
Treat these as 2026 localized estimates for spray foam insulation, not quotes from a contractor.
Is the price difference a dealbreaker?
A 3% 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: Clarksville vs Kingsport
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 | Clarksville | Kingsport |
|---|---|---|
| Open-cell | $1,450–$4,300 | $1,400–$4,150 |
| Closed-cell | $2,400–$6,650 | $2,300–$6,450 |
These are 2026 planning figures for spray foam insulation, localized to each city — not formal quotes.
Spray foam insulation by area: Clarksville vs Kingsport
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 | Clarksville | Kingsport |
|---|---|---|
| 500 sq ft | $850–$2,300 | $850–$2,200 |
| 1,000 sq ft | $1,450–$3,800 | $1,400–$3,700 |
| 1,500 sq ft | $2,100–$5,250 | $2,050–$5,100 |
| 2,000+ sq ft | $2,650–$6,200 | $2,600–$6,000 |
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
The DOE publishes a target R-value for every climate zone, and there's a reason to reach it: stopping short shaves a little off install day but forfeits years of lower energy bills and steadier indoor temperatures. Under-insulating is the one shortcut here that never actually pays.
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.
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.
Clarksville vs Kingsport
Is spray foam insulation cheaper in Clarksville or Kingsport?
Kingsport comes out ahead here, at roughly $3,500 for spray foam insulation compared with $3,600 in Clarksville — a 3% ($100) gap as of 2026.
Why does spray foam insulation cost more in Clarksville than Kingsport?
The main driver is local labor rates: Clarksville's labor index is 0.95 versus 0.92 in Kingsport. Climate zone (mixed vs mixed) also shift the total.
How much is spray foam insulation in Clarksville, TN?
spray foam insulation in Clarksville runs $1,450–$5,700 as of 2026 — most jobs land near $3,600.
When is the cheapest time to buy spray foam insulation — and does it differ by city?
It doesn't vary by location — Spring and summer is the discount window in both Clarksville and Kingsport (roughly 5–10% off), while the pre-winter fall rush tends to be the most expensive in either city.
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 Clarksville 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