How much does it cost to spray foam a 20x20 garage?

About 2 inches of closed-cell foam on the walls and ceiling of a 20x20 garage typically costs about $2,000 to $4,000, depending on wall height and the garage door.

What is the best insulation for a metal building?

Closed-cell spray foam, because it seals air, stops condensation and adds strength in one application.

Is 1 inch of spray foam enough for a metal shop?

For condensation control in an unheated shop, often yes. Heated or cooled shops usually need 1.5 to 3 inches.

How much does it cost to insulate a 40x60 metal building?

About 2 inches of closed-cell foam on the walls and roof commonly costs $10,000 to $20,000.

Do you need an air gap with spray foam on metal?

No. Closed-cell foam is sprayed directly onto the steel, which is how it stops condensation.

Do mice chew through closed-cell spray foam?

They can, but they rarely nest in it, unlike blanket insulation, and foam seals many of the gaps they use.

How long does a shop take?

Most shops take one to two days.

Metal Building Insulation Oklahoma City, OK

The Oklahoma City metro is full of steel buildings: shops on acreage in Piedmont, Choctaw and Newcastle, barndominiums west toward Mustang and Yukon, warehouses along I-40 and I-35, and oil field service buildings across the region. Bare metal heats up fast in the sun and cools quickly at night, which creates condensation.

Water drips onto tools, vehicles, equipment and inventory, causing rust and mildew. Fiberglass blankets help until the facing tears, and then condensation returns at the seams. Mice and birds also love nesting in torn blanket insulation.

Closed-cell spray foam bonds directly to the steel, seals panel laps and fasteners, and keeps the metal warm enough that condensation stops. Every building gets a free site visit and a written plan.

Oklahoma City tip

Decide where outlets, lights, plumbing and any mini split will go before foam goes on. Wiring and blocking should be in first.

Signs Your Metal Building Needs Spray Foam

✓A roof that drips on cool mornings
✓Rust on tools, fasteners and equipment
✓A shop too hot to use by midday
✓Torn, sagging or nest-filled blanket insulation
✓Plans to heat or cool the space
✓Dust and wind coming through panel seams

How Many Inches Does a Metal Building Need?

About 1 inch of closed-cell foam usually stops condensation in an unheated building. No air gap or separate vapor barrier is needed, because the foam bonds directly to the steel.

Heated and cooled shops and barndominiums typically get 1.5 to 3 inches, roughly R-10 to R-20, often more on the roof than the walls. Open-cell foam is generally not used directly on metal.

Metal Building Insulation Services We Offer

✓Shops and Garages

Year-round workspaces without dripping.

✓Barndominiums

Living space inside a steel shell.

✓Warehouses and Commercial

Lower energy costs and dry inventory.

✓Oil Field Buildings

Condensation control for equipment.

✓Thermal Barrier Coatings

Code-required coatings for occupied space.

Metal Building Insulation Cost in Oklahoma City, OK

Project	Typical Range	What Affects It
20x20 garage, about 2 in closed-cell, walls and ceiling	$2,000–$4,000	Wall height and door size
30x40 building, about 2 in closed-cell	$5,500–$11,000	Wall height and doors
40x60 building, about 2 in closed-cell	$10,000–$20,000	Size and openings
Condensation coat, about 1 in	$1.00–$2.00 per sq ft	Surface area

Planning ranges. Your free estimate measures the actual surfaces.

How It Works

1
Site Visit
We review how the building is used and measure.
2
Written Plan
Thickness, area and price in writing.
3
Install
Closed-cell foam applied in passes.
4
Closeout
Coatings applied where required, site cleaned.

Metal Building Insulation in Oklahoma City, OK