How Much Does Spray Foam Save on Heating Bills in Wyoming?
In a typical Wyoming retrofit — adding closed-cell foam to an under-insulated attic and rim joists — homeowners report 20–40% reductions in winter heating bills. Full-envelope new builds with closed-cell in walls and roof deck routinely cut heating loads in half.
This is the easiest part of any spray foam quote to oversell, so we will keep it honest. Real numbers we have seen across Wyoming and the Black Hills.
Attic retrofit (most common)
Going from R-19 fiberglass batts to R-49 closed-cell foam on the attic floor (or under the deck for an unvented assembly) typically cuts winter heating bills 20–40% in this region. The bigger the temperature delta and the leakier the original assembly, the bigger the win.
Rim joist + crawl space
Foaming the rim joist band and exposed crawl space ceiling alone can cut heating bills 5–15% for relatively little material — it kills the biggest air infiltration leak in most homes.
Full-envelope new build
Walls (closed-cell), unvented roof deck (closed-cell), and rim joist (closed-cell) on a new build will cut design heating load roughly in half compared to a fiberglass-only assembly of the same depth. We have new-build clients in Gillette and Spearfish running 1,800+ sqft homes on furnaces a full size smaller than their builder originally spec'd.
Pole barn or shop
Uninsulated to 3-inch closed-cell on walls and ceiling turns an unconditioned metal building into a year-round shop. Heating cost depends on use, but the comfort and condensation-control wins are immediate.
How to estimate yours
Use the spray foam calculator or schedule a free on-site inspection — we will measure the cavity, document the existing R-value, and tell you what to realistically expect on your bill.
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We do not publish a public price list.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.
