How Much Does Spray Foam Insulation Cost in Wyoming?
In Wyoming, open-cell spray foam typically runs $0.45 to $0.65 per board-foot installed, and closed-cell runs $1.00 to $1.50 per board-foot. For a 1,500 sq ft attic at R-49 you are looking at roughly $4,500 to $7,500 for open-cell or $7,500 to $11,000 for closed-cell — paying back in 6 to 9 years on a Wyoming heating bill.
Spray foam is the single highest-ROI insulation upgrade we install in Wyoming. It is also the one homeowners get the most confusing quotes on, because contractors quote it three different ways. Here is the breakdown.
The three units you will see quoted
- Square foot at a given depth. "$3 per sq ft at 3 inches" — easy to compare across jobs of the same depth.
- Board foot. 1 sq ft × 1 inch thick. The industry-standard unit. Open-cell at 3" depth = 3 board-feet.
- R-value target. "$X to hit R-49" — we usually quote attics this way because depth depends on whether we use open- or closed-cell.
2026 Wyoming pricing ranges
Open-cell spray foam
$0.45 to $0.65 per board-foot installed. So a wall cavity sprayed at 3.5" full depth: $1.60 to $2.25 per sq ft of wall.
- Best applications: interior walls, vaulted ceilings, unvented attics inside the conditioned envelope
- R-value: 3.7 per inch
- Doubles as a serious sound-deadener
Closed-cell spray foam
$1.00 to $1.50 per board-foot installed. So a 2" wall application: $2.00 to $3.00 per sq ft.
- Best applications: pole barns and metal buildings, rim joists, crawl spaces, exterior walls in extreme cold, anywhere you need a vapor barrier built in
- R-value: 7.0 per inch — highest of any common insulation
- Adds racking strength to walls (closed-cell foam doubles as structural)
Typical Wyoming project totals
| Project | Open-cell range | Closed-cell range |
|---|---|---|
| 1,500 sq ft attic to R-49 | $4,500–$7,500 | $7,500–$11,000 |
| Rim joist seal (200 lf) | n/a | $700–$1,200 |
| 40×60 pole barn walls + roof | n/a | $11,000–$18,000 |
| 2,000 sq ft crawl space | n/a | $6,000–$9,000 |
What drives the price up
- Setup access. Trailer-mounted rigs need close vehicle access. Remote properties (we serve Hulett, Beulah, etc.) cost more in setup time.
- Air sealing prep. If we have to detail penetrations, can lights, and chases before spraying, that is labor.
- Demo and removal. Old fiberglass batts have to come out and go to the dump.
- Multi-day jobs. A 16-hour mobilization for an 8-hour job is more expensive than a single-day job we can knock out in one trip.
Payback math
For an average 1,800 sq ft Wyoming home with R-19 attic going to R-49 in spray foam, we typically see $700 to $1,400 per year in heating savings (NG-heated), more on electric. Add 10–20% comfort improvement from eliminating wind-wash and ice dam risk. Payback in 6 to 9 years; warranty life of foam is the rest of the building.
Free quote — we measure, confirm open- vs closed-cell, and tell you what hitting code looks like. See spray foam services or request a quote.
Questions we get most.
How do you quote a spray foam job?
We do not publish a public price list. Every spray foam quote is tailored after a free on-site inspection — we measure the area, confirm open-cell vs closed-cell, and pick the thickness that hits the R-value you actually need. Use the spray foam calculator on the site to send us your specs and we will email a quote the same day.
How do you quote a new garage door install in Wyoming?
Every install is quoted after a free on-site visit so the number matches the actual scope — size, insulation grade, opener, and whether we are hauling off an old door. Use the garage door calculator on the site to send us your specs and we will email back a tailored quote the same day.
Are you licensed and insured?
Yes. Seamless Systems LLC is a licensed and insured Wyoming home services company, founded in 2016 by Cody Williamson with over 25 years of combined crew experience in garage doors, gutters, and spray-foam insulation.
What is the difference between open-cell and closed-cell spray foam?
Open-cell foam is softer, lighter, has an R-value of about 3.5 per inch, and is great for sound dampening in interior walls and roof decks. Closed-cell foam is denser, has an R-value of about 7 per inch, adds a vapor barrier, and increases structural rigidity — common in our region for unconditioned shops, metal buildings, and exposed crawl spaces.
