Spray Foam Insulation cost: Coeur d'Alene vs Idaho Falls (2026)
In 2026, spray foam insulation is about 1% more expensive in Coeur d'Alene than in Idaho Falls. Most homeowners pay around $3,850 in Coeur d'Alene versus $3,800 in Idaho Falls — a gap of roughly $50.
Coeur d'Alene ID
Typically around $3,850
Idaho Falls ID
Lower costTypically around $3,800
Coeur d'Alene vs Idaho Falls: full breakdown
| Factor | Coeur d'Alene | Idaho Falls |
|---|---|---|
| Typical 2026 cost | $3,850 | $3,800 |
| Estimated range | $1,550–$6,150 | $1,500–$6,050 |
| Labor index (vs US) | ×0.97 | ×0.95 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.06 | ×1.06 |
| Local permit | None | None |
| Labor share | $2,100 | $2,100 |
| Materials/equipment | $1,750 | $1,700 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national spray foam insulation range for local labor, climate and permits.
Is the gap worth worrying about?
That 1% 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: Coeur d'Alene vs Idaho Falls
Each spray foam insulation option, priced separately for both metros — the same local labor, climate and permit adjustments applied per city, so you can compare like for like.
| Type | Coeur d'Alene | Idaho Falls |
|---|---|---|
| Open-cell | $1,550–$4,600 | $1,500–$4,550 |
| Closed-cell | $2,550–$7,200 | $2,500–$7,050 |
Localized 2026 planning ranges by type — not quotes.
Spray foam insulation by area: Coeur d'Alene vs Idaho Falls
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 | Coeur d'Alene | Idaho Falls |
|---|---|---|
| 500 sq ft | $900–$2,450 | $900–$2,400 |
| 1,000 sq ft | $1,550–$4,100 | $1,500–$4,050 |
| 1,500 sq ft | $2,250–$5,650 | $2,200–$5,550 |
| 2,000+ sq ft | $2,850–$6,650 | $2,800–$6,550 |
Localized 2026 ranges by area — not quotes.
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?
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 — federal 25C credits plus utility programs can cover a large share. Check DSIRE before you book and time it to a fresh rebate budget.
Hit the DOE R-value for your zone, air-seal first, and stack the rebates. Insulation is one of the few upgrades where doing it fully is also the cheapest path to payback.
Coeur d'Alene vs Idaho Falls
Is spray foam insulation cheaper in Coeur d'Alene or Idaho Falls?
In 2026, spray foam insulation is cheaper in Idaho Falls at about $3,800, versus $3,850 in Coeur d'Alene — a difference of about $50 (1%).
Why does spray foam insulation cost more in Coeur d'Alene than Idaho Falls?
The main driver is local labor rates: Coeur d'Alene's labor index is 0.97 versus 0.95 in Idaho Falls. Climate zone (cold vs cold) also shift the total.
How much is spray foam insulation in Coeur d'Alene, ID?
In Coeur d'Alene, spray foam insulation typically runs $1,550–$6,150 in 2026, with most homeowners paying around $3,850.
When is the cheapest time to buy spray foam insulation — and does it differ by city?
The best window is the same in both Coeur d'Alene and Idaho Falls: 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?
Rarely. The $50 difference is real but one-time, and you can often close most of it in Coeur d'Alene by buying in the off-season and getting tighter, apples-to-apples bids. Ongoing factors — energy prices, climate and home condition — matter more over the life of the system.
Compare spray foam insulation in other cities
Updated June 2026 · By Serhat Özçelik