Hey folks, I'm Andy, co-founder of BEEST, and my family makes spray foam for people who fix their own places.

Every November the same message comes in.

“I set up a gym in the garage. I can't feel the bar.” Or it's a workbench. Or a bar fridge and a TV.

The space heater runs all day. The garage is still cold.

So here's what I tell every one of them.

Your heater isn't losing because it's too small. It's losing because a garage was built to park in, not to live in.

Give me five minutes. I'll show you the three places the heat is leaving, why nobody fixed them, and how one weekend takes care of it.

Why Everything You've Tried Hasn't Worked

If your garage is cold, I'd bet you've tried most of this:

• Bought a bigger space heater. Tripped the breaker. Garage still cold.
• Weather-stripped the door. Helps with the draft under the door. Doesn't touch the walls.
• Put a mat on the slab. Your feet feel better. The room doesn't.
• Bought a few cans of gap filler. One can did one corner.
• Priced a crew. They wanted a minimum charge for three walls, if they called back at all.

None of it worked. And here's the part nobody told you: none of it touches the root cause.

The Hidden Root Cause: A Garage Is Built to Park In

When your house was built, the garage was the room nobody finished. It only had to keep a car dry.

So here's what you've got. Three leaks and a door.

1. The slab seam. A gap along the bottom of every wall, where the framing sits on the concrete. All the way around.

2. The top plate. Where the walls meet the ceiling framing. Warm air rises straight out through it.

3. Bare stud bays. Siding on one side, nothing in the middle. Every bay is a cold panel.

Then the door. One big uninsulated panel that takes up most of a wall.

Your heater warms the air. The air leaves through three seams and a door. You're heating the driveway.

That's the root cause. Not the heater. Not the thermostat. Three leaks and a door.

Why Nobody Told You This

I'm not going to tell you contractors are crooks. They're not.

But a foam crew needs jobs worth the drive. Two-car garage walls are about 3 kits at 1 inch. Most crews won't come out for that. The ones who do charge a minimum.

The hardware store won't tell you either. The cans on the shelf are made for a door frame, not 460 square feet of wall.

And the garage door? Everybody skips it, because foam on a door is a bad idea. More on that in a second.

The Fix Is Simpler Than Anyone Let On

Three leaks and bare bays are one problem. So the fix has to do two jobs at once.

Seal the seams. Insulate the bays. In one pass.

That's what spray foam does. It expands into the gaps, then it sets into a layer of insulation on the siding and the studs.

And that's why we built FullStop as a 12-can kit with a real metal gun, not a single can.

• 12 cans and a metal gun. Two-car garage walls are about 3 kits at 1 inch. Buy the pack that fits the job. No compressor. No rental.
• R-4.12 per inch. Two 1-inch passes get you R-8.24 at 2 inches.
• DualCore foam. A closed-cell outer skin with a flexible center. People ask us open or closed cell. It's a blend of both.
• Class A fire-rated. Cured FullStop tested ASTM E84 with a Flame Spread Index of 0.* Your local code still decides whether it needs an ignition or thermal barrier, so check with your inspector.
• Gloves, goggles and a coverall in the box. Plus a metal gun and cleaner. Bring your own respirator.
• One rule: foam never goes on the garage door. It adds weight and looks rough. For the door, use our Garage Insul8 panels. Foam the walls. Insul8 the door. Done.

How a Weekend Goes

Here's the job, start to finish.

1. Warm the cans to 68F. Leave them in the kitchen overnight. The garage surface and air need to be 41F or warmer.
2. Check that it's dry. Never spray a wet wall. Run any wiring first.
3. Suit up. Respirator, gloves, goggles, coverall. Every time.
4. Practice on cardboard. Five minutes with the gun and you've got it.
5. Spray each bay in a 1-inch pass. Slab seam first, then the top plate, then the field. Let it set. Second pass for 2 inches.
6. Air it out. Door up, fans on. Give it 24 to 72 hours before you train or work out there.

Keep flames, sparks and pilot lights away while you spray and until the vapors clear. Garage ceilings may need a thermal barrier. Your local code decides, so check with your inspector.

How Many Kits Does a Garage Take?

This is the first question everyone asks. Here's the honest math.

One kit is 12 cans, rated 240 sq ft at 1 inch on paper. Real use runs about 70% of that. That's our estimate, not a lab test.

Measure each wall, height by length, and add them up. Leave the door opening out. The door is an Insul8 job.

Real use, rounded up. Overhead work uses more.

Round up, never down. One buyer put it best: “Covers less than you think it will, plan ahead.”

Detached 24x24 with the roof? That's a big job. Get a crew quote too and compare. The kit shines on the walls a crew won't drive out for.

Use the calculator →

What Happened in Other People's Garages

“I used this spray foam insulation kit in my garage, and it made a huge difference in both temperature control…”

“Surprised how easy this was. I had never used spray foam before this but it really was pretty simple after about 5 minutes.”

“Beest spray foam restored my confidence in ordering items off Facebook.”

“Was nice to be able to speak with someone.”

FullStop customer reviews, Judge.me. Verbatim.

We asked our customers what changed after the job:

Customer-reported, individual experiences vary. Not a promise of savings from BEEST.

The Questions I Get Before People Buy

What about the garage door?

Not foam. Foam adds weight and looks rough on a door. Use Garage Insul8 panels for the door, and FullStop for the walls and ceiling.

Won't the heat leave every time I open the door?

While it's open, sure. Close it, and sealed walls hold the warmth instead of leaking it out all day long.

Will it stick to cinder block?

Yes. Wood, metal, concrete and drywall. The surface has to be dry and 41F or warmer.

Is it flammable?

While you spray and before it cures, yes. Keep flames, sparks and pilot lights away until the vapors clear. Cured FullStop is Class A fire-rated (ASTM E84), Flame Spread Index 0.* Your local code decides whether it needs an ignition or thermal barrier.

I've never sprayed foam. Can I do this?

Plenty of our buyers had never touched foam before. Practice on cardboard, spray thin passes, let each one set, and you'll be fine.

Isn't it cheaper somewhere else?

The kit comes with a metal gun, cleaner, gloves, goggles, a coverall and video help. And a person who picks up the phone when you have a question halfway through the job.

Is this a real company?

We're BEEST, a family-owned company. Call us before you order and a real person answers: 1 (800) 540-4671.

Here's What I'd Do This Weekend

Go out to the garage tonight. Run your hand along the bottom of the wall, where it meets the slab.

Then do it before it gets too cold to spray. FullStop needs 41F or warmer, surface and air. In most of the country that window is closing.