A bare metal pole barn in northeast Oklahoma works against you all year. In July the roof panels bake in the sun and the inside of the barn runs hotter than the air outside. In winter, warm moist air inside the barn hits cold steel and turns to water, which drips on equipment, hay and vehicles. Bubble wrap and thin blanket insulation help a little, but they tear, sag, hold dust and give mice a place to nest.
Closed-cell spray foam fixes those problems in one step. It is sprayed directly onto the underside of the metal roof and walls between the purlins, girts and posts, where it bonds to the steel, fills every rib and seam, and cures into a rigid layer. At about R-6 to R-7 per inch, 2 inches gives roughly R-13 and works as a vapor retarder, so warm air can no longer reach the cold metal.
Owner Paul Hayes or a crew lead looks at every building before we quote it. We check for roof leaks, old insulation that has to come out, door and eave gaps, and how you use the barn, then recommend a thickness for the roof and the walls separately. An unheated equipment barn needs much less than a heated shop.
Tulsa tip
Spray the roof first if your budget is limited. In most Tulsa pole barns the roof is where the dripping and the summer heat come from, and 1 to 2 inches of closed-cell overhead solves most of the condensation before you ever touch the walls.
Signs Your Pole Barn Needs Spray Foam
- ✓Water dripping from the roof on cool mornings
- ✓Rust on screws, purlins or stored tools
- ✓Torn or sagging bubble wrap or blanket insulation
- ✓A barn that runs hotter than outside in summer
- ✓Mice or birds nesting in the old insulation
- ✓A shop you cannot keep warm with a heater
How Much Foam a Tulsa Pole Barn Needs
For condensation control in an unheated barn, about 1 inch of closed-cell foam on the roof is usually enough. For a shop you heat or cool, 2 inches on the walls and 2 to 3 inches on the roof is typical, giving roughly R-13 walls and R-13 to R-20 overhead.
Closed-cell foam typically costs about $1.00 to $2.00 per board foot installed, so 2 inches runs about $2.00 to $4.00 per square foot of surface. Open-cell foam costs less per board foot but should not be sprayed directly on bare metal, because it lets moisture through to the cold steel.
Pole Barn Spray Foam Insulation Services We Offer
✓Roof and Wall Foam
Closed-cell foam on the underside of metal roof and wall panels.
✓Condensation Coats
A thinner closed-cell layer overhead to stop dripping.
✓Old Insulation Removal
Pulling torn bubble wrap and wet blanket insulation first.
✓Door and Eave Sealing
Sealing gaps at eaves, base trim and overhead door frames.
✓Thermal Barrier Coatings
Code-required coatings when foam is left exposed in occupied spaces.
Pole Barn Spray Foam Insulation Cost in Tulsa, OK
| Project | Typical Range | What Affects It |
|---|---|---|
| 30x40 shop, 2 in closed-cell, walls and roof | $5,500–$11,000 | Wall height and roof pitch |
| 40x60 barn, 2 in closed-cell, walls and roof | $10,000–$20,000 | About 5,000 sq ft of surface |
| Roof only, 1 in condensation coat | $1.00–$2.00 per sq ft | Roof area and access |
| Old insulation removal | Quoted per building | Type and condition |
Planning ranges for the Tulsa area. Your free estimate gives the exact written price after we measure the building.
How It Works
- 1
Building Walkthrough
We check panels, leaks, old insulation, doors and how the barn is used.
- 2
Prep and Protect
Equipment is moved or covered, and floors and windows are masked.
- 3
Spray in Passes
Closed-cell foam goes on in controlled passes to the planned depth.
- 4
Depth Check
We check thickness with you, clean up and review the work.
Related reading: Cost to Insulate a 40x60 Pole Barn Spray Foam vs Fiberglass for Pole Barns