Metal Building & Barndominium Insulation in Oklahoma City, OK

Metal building and barndominium insulation solves two problems at once: heat and condensation. A bare steel roof in an Oklahoma summer turns the building into an oven, and on cool, humid mornings warm moist air inside meets cold metal and condenses, so the roof and walls drip on whatever is stored below. Around Oklahoma City, steel shops, garages, horse barns and barndominiums are common on acreage in places like Piedmont, Choctaw, Harrah, Newcastle, Blanchard and Tuttle, and they all deal with the same physics.

Why closed-cell foam is the usual choice

Closed-cell spray foam bonds directly to the steel, so there is no gap for moist air to reach the cold metal. HomeGuide lists it at about R-5 to R-7 per inch, so a modest thickness gives a useful R-value without taking much interior space. It also seals the many laps, fasteners and trim joints in a metal building, and adds some rigidity to the panels. Open-cell foam is cheaper per square foot but lets vapor through, so on bare steel it can trap moisture against the metal unless it is paired with another vapor control layer.

Barndominiums are houses

A barndominium is a home inside a steel shell, and it needs to perform like one. That usually means closed-cell foam on the roof and walls, attention to where the living space meets any attached shop, and a plan for fresh air, since a foamed steel building is very tight. If the barndo is being permitted as a residence, the local building office may have its own requirements for insulation and fire protection. We ask about permits and inspections up front and plan the foam thickness accordingly.

Shops and garages

Not every shop needs to be a living room. Some owners want the building comfortable enough to work in with a small heater or a mini-split. Others only want the dripping to stop so tools and vehicles stay dry. We size the job to the goal: a thinner coat to control condensation, or a thicker one for a building that will be heated and cooled.

Before we spray

We check for rust, loose fasteners and roof leaks, since foam bonded to failing steel will not fix those. We also ask what is stored inside, since the building needs to be emptied or covered during spraying. In buildings people will occupy or work in, foam generally needs a thermal barrier or an approved coating, and we discuss that so the finished building meets what your inspector expects. Get a free estimate