Open-Cell Spray Foam Insulation for Homes & Attics
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Open-cell spray foam runs about half the cost of closed-cell and is the right pick for interior walls, vaulted ceilings, and unvented attics inside the conditioned envelope. At 0.5-lb density it gives R-3.7 per inch and a serious sound-deadening bonus. Seamless Systems sprays open-cell foam across Wyoming and the Black Hills.
Open-cell spray foam runs about half the cost of closed-cell and is the right pick for interior walls, vaulted ceilings, and unvented attics inside the conditioned envelope. At 0.5-lb density it gives R-3.7 per inch and a serious sound-deadening bonus. Seamless Systems sprays open-cell foam across Wyoming and the Black Hills.
What's included in open-cell foam.
- R-3.7 per inch — fills wall cavities completely
- Excellent sound dampening between rooms and floors
- Best fit for interior walls, vaulted ceilings, unvented attics
- Roughly half the material cost of closed-cell
- Expands ~100× to fill every gap and stud bay
When to call Seamless Systems for open-cell foam.
Ice dams on the eave, drafty rooms above the garage, cold floors over a crawl space, or a shop that swings 60°F in a day — those are the five tells a building is bleeding conditioned air through inadequate insulation. Spray foam is the highest-ROI fix in this climate.
- Ice damming on the roof edge in winter
- Drafty rooms or temperature swings room-to-room
- Heating bills that climb year over year
- A pole barn or shop you can't use in winter
- Condensation dripping off cold steel in a shop
- New build wanting the highest R per inch
Where we do open-cell foam.
Seamless Systems LLC is headquartered in Moorcroft, WY and regularly performs open-cell foam across northeast Wyoming and the western Black Hills of South Dakota. Most service calls are answered same-day from our 4 Westridge Road shop:
- Buffalo, WY
- Gillette, WY
- Wright, WY
- Moorcroft, WY
- Sundance, WY
- Sheridan, WY
- Beulah, WY
- Hulett, WY
- Belle Fourche, SD
- Spearfish, SD
- Sturgis, SD
- Deadwood, SD
Related Seamless Systems services
See full spray foam details on the spray foam service page, or compare other Seamless Systems trades on the services hub.
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We do not publish a public price list.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.
Heating bill brutal?
Foam that attic, garage, or shop.
Closed-cell and open-cell spray foam built for Wyoming wind and Black Hills cold. Free inspection + custom R-value plan.