Metal Building & Pole Barn Spray Foam Insulation
Stop the sweating, the rust, and the freezing shop. Seal Tech sprays closed-cell foam directly onto steel panels to end condensation, stiffen the building, and make it usable all year across Southeast Michigan.
Pole Barns, Shops, Garages & Steel Buildings
Spray foam sticks to steel, wood, and concrete and fills every rib, seam, and fastener gap. Whatever the building, if it needs to stay dry and comfortable, we can seal it.
Why Metal Buildings "Sweat"
Steel conducts heat fast. When warm, humid air inside your building touches a cold metal panel, the moisture turns to water, the same way a cold drink sweats in summer. That water drips onto tools, vehicles, feed, and stock, and over time it rusts panels and grows mold.
Fiberglass batts don't fix it, because humid air still reaches the steel behind them. Closed-cell spray foam bonds directly to the panel, so there's no cold surface left for condensation to form on.
Fiberglass Batts
- Air still reaches the cold steel
- Absorbs moisture and sags
- Falls out of ribs and seams
- Gives pests a place to nest
Closed-Cell Foam
- Bonds directly to the panel
- Blocks air and moisture
- Fills every rib and fastener gap
- Won't sag, settle, or fall out
Cold Michigan air chills the steel panel to near outdoor temperature.
Without insulation, this is the cold surface where water forms and drips.
Closed-cell foam bonds to the steel and seals it off, so warm, moist air never touches the cold metal.
A dry, comfortable building that stays warmer in winter and cooler in summer.
6 Benefits for Pole Barns & Metal Buildings
Stops Condensation
No cold steel surface means no dripping, rust, or mold on your panels and contents.
Usable All Year
Work in your shop or gym in January and July without fighting the temperature.
Adds Rigidity
Closed-cell foam stiffens wall and roof panels, helping the building handle wind and snow loads.
Seals Every Gap
Foam expands into ribs, seams, and fastener holes that batts and blankets can't reach.
Won't Sag or Fall
It bonds permanently to the steel, so there's no droopy insulation or loose vapor barrier.
Lower Energy Costs
Big open spaces lose heat fast. Sealing the shell lets smaller heaters and coolers keep up.
See How We Seal a Building
From the rig to the final pass, here's how our crews mix, spray, and seal, plus why closed-cell foam is the go-to for steel.
Closed Cell vs. Open Cell for Metal Buildings
For the steel shell itself, closed cell is the clear choice. Open cell has a place on some interior walls and partitions.
Closed Cell Foam
Best for Steel| Condensation | Stops it: acts as its own vapor barrier |
|---|---|
| Strength | Adds rigidity to wall and roof panels |
| R-value | About R-6 to 7 per inch, the highest available |
| Best for | Steel walls, roof panels, pole barn shells |
Open Cell Foam
Interior Use| Condensation | Not a vapor barrier on its own |
|---|---|
| Strength | Soft and flexible, no added rigidity |
| R-value | About R-3.5 to 3.8 per inch |
| Best for | Interior partitions, office walls, sound control |
From Bare Steel to a Sealed Shell
Inspect & Clean
We check the panels and clean them so the foam bonds properly to the steel.
Mask & Protect
Doors, windows, lights, and anything that stays uncovered gets masked off.
Spray in Passes
Foam goes on in even passes to the target thickness, expanding into ribs and gaps.
Cure & Clean Up
It cures into one seamless layer. We clean up and walk the finished building with you.
Building New? Spec It In.
Plan spray foam into your new pole barn or steel building from the start. Send us your plans and we'll quote it.
Already Built? No Rebuild Needed.
We spray directly onto the inside of existing panels to seal the building and stop condensation.
"Eric and his team did outstanding work. My home is air tight. Eric said my house would be like an insulated cooler when he finished, and he was right."Thomas W. · Google review
"Recently worked with them on a joint project. They insulated the crawl space and attic. Shout out Jamie for coordinating the process."DJ P. · Google review
"Great work! Job well done. Saved so much money. Workers very polite and answered all our questions."Sherry C. · Google review
Metal Building & Pole Barn FAQs
Can you spray foam an existing pole barn?
Yes. We apply closed-cell foam directly to the inside of existing steel panels. It seals the building and stops condensation without any major rebuild.
What's the best insulation for a metal building?
Closed-cell spray foam. It bonds to the steel, blocks air and moisture, adds rigidity to the panels, and has the highest R-value per inch of any common insulation.
Will spray foam stop my metal building from sweating?
Yes. Condensation forms when warm, humid air touches cold steel. Closed-cell foam covers the steel and seals it off, so there's no cold surface left for moisture to collect on.
Does spray foam make a metal building stronger?
Closed-cell foam adds rigidity to wall and roof panels once it cures, which helps the building handle wind and snow loads.
Why does closed-cell foam cost more than open-cell?
Closed-cell foam is denser and uses more material per inch, but it also delivers a higher R-value, a built-in vapor barrier, and added strength. On steel buildings, those benefits are exactly what you need.
Does spray foam need maintenance once it's installed?
Cured closed-cell foam needs little to no maintenance. It won't sag, settle, or fall out of the walls the way fiberglass can.
Ready to Insulate Your Pole Barn or Metal Building?
Tell us about your building's size, use, and whether it's new or existing. We'll recommend the right foam and give you a free estimate.