Veteran-Owned · Spray Foam · SPF Roofing · Coatings · Serving MT / ND / SD / WY
📞 406-939-8301

Spray Foam Insulation That Pays You Back

One application that air-seals and insulates at the same time — lower heating and cooling bills, fewer drafts, less noise, better moisture control, and a stronger building. Homes, shops, barns and metal buildings across Montana, North Dakota, South Dakota & Wyoming. Veteran-owned and BPI-certified, sprayed by our own crew.

✔ Fully Insured ✔ BPI Certified ✔ Veteran-Owned ✔ $0-Down Financing
Closed-cell spray foam insulation applied to a vaulted ceiling
Veteran-Owned · Fully Insured · BPI Certified · Serving MT, ND, SD & WY

Why spray foam?

A big share of a building's energy loss comes from air leaks — gaps you can't see in the attic, walls, and crawl space. Spray polyurethane foam seals those gaps in one application: it insulates and air-seals at the same time, something batts and blown-in can't do. In our climate — long, cold winters and hard plains wind — that air seal is the difference between fighting your furnace and forgetting about it. We'll run diagnostic testing to find exactly where your building leaks, recommend open- or closed-cell foam for the job, and seal it right.

🌡️ Seals air leaks

Foam expands into every gap and seam, stopping the drafts that steal your heat. One step, air barrier and insulation together.

💪 High R-value

Closed-cell delivers about R-6.5 per inch and adds structural rigidity — ideal for metal buildings, crawlspaces and roofs.

💧 Controls moisture

Closed-cell foam acts as an air and vapor barrier, cutting condensation and helping protect against moisture and rot.

What we spray

Closed-Cell Foam

Dense, high-R, air + vapor barrier. Best for metal buildings, shops, crawlspaces, rim joists, roofs and anywhere moisture control matters.

Open-Cell Foam

Great expansion and sound control for interior walls and large attics where a vapor-permeable insulation is the right call.

SPF Roofing

Seamless spray-foam roofing with a protective coating — stops leaks and adds insulation on low-slope commercial and ag roofs. See SPF roofing →

Protective Coatings

Acrylic and silicone coatings that extend roof life and protect foam from UV — done to manufacturer spec.

Learn more: Open-cell vs closed-cell · Attic insulation · Ice dam prevention · The building envelope · Foam strengthens walls · Spec & QA standard

Our spray foam work

Closed-cell spray foam in wall stud bays
Foamed stud bays
Spray foam insulation applied between studs
Sealed wall cavities
Vaulted ceiling insulated with spray foam
Vaulted ceiling foam
Crew in Tyvek suits spraying closed-cell foam
Our crew on the job
Machine Gun Spray Foam team
The Machine Gun team
Blower-door rig for building energy testing
Blower-door energy testing

BPI-Certified building science

BPI Professional certification for Clifton Behner

Owner Clifton Behner holds BPI Professional and Technician certifications from the Building Performance Institute. Your foam is applied by a crew trained in air sealing, moisture control and whole-building performance — not spray-and-go.

Where we work

Based in Glendive, MT and serving the four-state region. If your town isn't listed, call — we travel for the right job.

Glendive, MTMiles City, MTSidney, MTBillings, MTBozeman, MTGreat Falls, MT Williston, NDWatford City, NDDickinson, NDBismarck, ND Rapid City, SDSpearfish, SD Gillette, WYSheridan, WY

What customers say

"Financing made it a no-brainer — we did the whole shop instead of half. Crew was fast and clean."— Shop owner, Eastern MT
"Foamed the house and it's noticeably more comfortable — no more drafts. Wish we'd done it sooner."— Homeowner, ND
★ Read & leave Google reviews

Common questions

Closed-cell or open-cell — which do I need?

Closed-cell for metal buildings, crawlspaces, roofs and anywhere moisture and high R-value matter. Open-cell for interior walls and large attics where sound control and a vapor-permeable foam are the right fit. We'll tell you straight which one your job calls for.

Do you do metal buildings and shops?

Yes — pole barns, shops, and steel buildings are a big part of what we do. Closed-cell foam seals the metal, stops condensation, and holds temperature.

Is spray foam safe once it's cured?

Once it's fully cured and the space is re-ventilated per the manufacturer's guidance, the foam is inert and stays put in the assembly. We spray to the manufacturer's spec and follow their re-occupancy guidance on every job.

Does closed-cell foam add strength to the building?

Yes — closed-cell foam is rigid, so it adds racking stiffness to walls and helps tie the assembly together. That's one reason it's a favorite for metal buildings, pole barns and roofs.

Can I finance it?

Yes. We offer $0-down financing through Hearth — checking your rate is a 60-second soft pull that won't affect your credit.

What areas do you serve?

Montana, North Dakota, South Dakota and Wyoming, based out of Glendive, MT. Call 406-939-8301 for current lead times in your area.

📞 Get a free quote — call or text 406-939-8301
Machine Gun Spray Foam & Concrete Lifting, LLC · Veteran-Owned · 2402 N Anderson Ave, Glendive, MT 59330
📞 406-939-8301 · Serving MT / ND / SD / WY · BPI Certified