📞 406-939-8301 clifton@machinegunsprayfoam.info
Closed-cell spray foam insulation applied to a vaulted ceiling in Montana
Veteran-Owned · Glendive, MT · MT · ND · SD · WY

We seal it tight. We lift it level. We show up.

Veteran-owned and owner-operated out of Glendive, Montana — one crew for spray foam insulation, foam roofing, protective coatings, and concrete lifting across MT, WY, ND, and SD. BPI-certified, and we stand behind the work.

Montana, Wyoming, North Dakota, and South Dakota

For all of your spray foam insulation, roofing, and concrete lifting needs.

The crew you're calling

Cliff Behner, Owner

A Marine-veteran-owned crew that shows up on time, sprays in the cold the right way, and gives you straight numbers — no upsell.

Serving: Montana, Wyoming, North Dakota, and South Dakota
Call: (406) 939-8301  or  605-349-2884
Based in: Glendive, MT
Machine Gun Spray Foam crew at the Glendive ribbon-cutting
What we do

Four ways we make your building work harder

01 / INSULATION

Spray Foam Insulation

Open and closed-cell foam that air-seals and insulates in one pass — walls, rim joists, metal shops, crawlspaces. Stops drafts and condensation cold.

02 / ROOFING

SPF Roofing & Coatings

Renew an aging metal or flat roof — seamless spray foam plus a silicone or acrylic topcoat. Seals every seam and adds insulation up top, often for less than a tear-off.

03 / CONCRETE

Concrete Lifting

Sunken driveway, garage slab, or sidewalk? We lift it back with polyurethane foam — no tear-out, cured in minutes, and we fill the voids so it stays put.

04 / DIAGNOSTICS

Blower-Door Energy Audits

BPI-certified testing that shows you exactly where a building leaks air — before you spend a dime on foam. Numbers first, no guesswork.

Our work

Real jobs, our own crew

Machine Gun Spray Foam wrapped rig and truck
Our mobile spray rig
White SPF foam roof coating on a commercial building
SPF roof coating
Seamless spray-foam roof with white coating
Seamless foam roof
Graco GH300 spray rig
Graco GH300 spray equipment
Cool Machines insulation removal vacuum equipment
Insulation removal
What customers say

Reviewed by your neighbors

Real Google reviews from across MT · ND · SD · WY.

★★★★★

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★★★★★

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BPI Building Analyst certification for Clifton Behner
Building science

BPI-Certified. Trained to build it right.

Clifton holds Building Performance Institute certifications — so your foam, roofing, and coating work is done by a crew trained in air sealing, moisture control, and whole-building performance. Not spray-and-go.

The honest pitch

Heating a leaky building is money out the roof

Most shops and older homes on the plains leak conditioned air through the rim joist, the walls, and a sweating metal roof. We run a blower-door test and show you the exact air leak first — then seal it with foam so your heat stays where you paid to put it. No guaranteed-savings promises; just real numbers and work that lasts.

Why MGSF

Marine discipline, on your job site

On time, done right

We show up when we say we will, do the work to spec, and clean up after ourselves. Same standard we ran in the Corps.

We spray in the cold — the right way

Northern Plains winters don't stop us. We check substrate temp and dew point on every job so the foam bonds and cures right, with no callbacks.

Straight numbers, no upsell

You get a clear bid with the scope and the price. If a repair beats a replacement, we'll tell you — even when it's the smaller job.

Service area

Four states, one crew

Financing Available

$0 down. Pay it out over time.

Get the foam, roof, or lift done now and pay monthly through Hearth. Checking your rate takes about 60 seconds and won't affect your credit.

Check Your Rate See Financing Options
Financing provided by Hearth. Subject to approval.

Homeowners: Get the FREE Spray Foam Guide

The homeowner's guide to spray foam insulation — what it is, where it pays off, and what to ask a contractor. No cost, no obligation.

Download the Free Guide (PDF)
Questions

Common questions

Do you spray foam in cold Montana winters?

Yes. Northern Plains winters don't stop us — we check substrate temperature and dew point on every job so the foam bonds and cures correctly, with no callbacks.

Open-cell or closed-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 offer financing?

Yes — $0-down financing through Hearth. Checking your rate takes about 60 seconds and 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.

Are you licensed and insured?

We're veteran-owned and fully insured — $1,000,000 general liability plus Montana workers' comp on our crew — and BPI-certified. You're covered before we ever pick up a gun.

Do you handle commercial jobs, or just homes?

Both. We do residential and commercial — homes, shops, barns, ag buildings, and commercial projects, new construction and existing buildings.

Free quote

Tell us about the job

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