Frost heave under a freezer slab is the failure that nobody sees coming and everybody pays for. Hold the ground under a floor at zero degrees for long enough and the moisture below freezes, expands and lifts the concrete. That single physical fact explains why a cold storage building costs more than a dry one and why the floor, not the walls, is where we spend the most design time.
We build cold and cool storage in Oklahoma with a pre-engineered steel structure wrapped in insulated panels. The frame is familiar. The envelope is not. A cooler or freezer needs continuous insulation with tight joints, a vapor barrier that survives, doors that seal, and a structure that can carry evaporators, piping and sometimes a second layer of racking. All of it is coordinated with a refrigeration contractor who owns the system design.
Owners usually ask us two things early: what will it cost, and who is responsible when something condenses. We answer the first with ranges tied to temperature and size, and the second by splitting the scope clearly in writing so that the panel joints, the floor and the refrigeration are each owned by someone.
A freezer floor is a sandwich: compacted subgrade, a vapor retarder, rigid insulation in layers, a protection slab, and a structural slab on top, often with a heating or ventilation system underneath to hold the soil above freezing. A cooler at 35 degrees needs less than a freezer at minus ten, and a dock or processing room that runs warm needs none. We ask for the temperature of every room before we draw a footing.
The soil report matters too. Water table, clay content and bearing capacity decide whether the slab is thick, whether the footings are deep, and whether the site needs extra drainage. We rely on a site-specific geotechnical report every time, and we do not price a cold floor without one. Once the slab is set, steel erection can proceed, but the slab schedule is the long pole.
The walls and roof are insulated metal panels with a foam core, joined with tongue-and-groove or cam-lock joints and sealed at every edge. The thickness comes from the room temperature: a cooler may use four inches and a freezer six or more. Thermal bridges at the frame, the base, and every penetration are the weak points, so we detail them rather than accept the default. Our insulated metal panels page describes the panel options and tolerances.
Doors and vestibules are the other leak. A freezer door that stands open for ten minutes in an Oklahoma August takes the whole load in a rush. We specify insulated sliding or hinged freezer doors, strip curtains, dock seals and an airlock where traffic is steady, and we leave electrical room for heaters on door frames and floors. Roof loads for condensers, ductless coolers and ammonia or glycol lines get added to the frame design before the order, not after.
Cold buildings have their own safety list. Refrigerant rooms have ventilation and detection requirements, ammonia systems have more, and people working in a freezer need egress doors that open from the inside and alarms that work. Insulated panels also have fire performance questions that the fire marshal will ask about, and the sprinkler design needs to account for cold. None of this is a job for guesswork.
On the licensing side, Oklahoma does not require a state license for general contracting, but mechanical, electrical, plumbing and roofing are licensed trades under the Construction Industries Board, and the board lists refrigeration among the license exam categories it is transitioning for the new code editions. We hire licensed trades and coordinate the refrigeration engineer, the electrician and the inspector so that startup is not delayed by paperwork.
The numbers differ by temperature, but the pattern holds. Panel thickness, floor construction, refrigeration equipment, electrical service and controls all rise as the setpoint drops. A freezer might cost two to three times a dry shell, and the refrigeration plant can exceed the building. Because exact prices change with the market, we give ranges tied to a written scope, not a single figure.
Operating cost counts as much as first cost. The state commerce department notes that Oklahoma energy costs run 17% below the national average, which helps the running budget, but a better envelope pays back every month. We show the lifetime effect of a thicker panel or a better door in a simple table so you can see the trade. When owners are unsure, we suggest building the shell ready for added capacity so a second freezer cell can be added later.
Cold storage follows trucks and rail. In Ardmore, a March 2025 report said a national foodservice distributor was undertaking a 33,000-square-foot cold storage expansion, and the Ardmore Development Authority describes a rail spur from the BNSF main line serving the industrial airpark, with State Highway 53E leading nine miles from Interstate 35 into the park. Those details show how a small town can host a real cold chain operation when freight and power are both there.
Across the state, three interstates and over 2,600 miles of Class I rail give grocers, agribusiness producers and distributors choices. Read Ardmore for local context, distribution centers for the dry side of the chain, food and beverage processing if you are making product, and warehouse if you only need dry storage today and want room for cold later.
Power service is the quiet schedule risk. A cold building draws a steady load that a dry shell never does, so the utility may need to upgrade a line or set a transformer, and that work can run longer than the building itself. We ask for the utility's timeline in the first meeting and build the schedule around it.
Send us the setpoints, product, pallet count and site. We will respond with a scope split between structure, envelope and refrigeration, a budget range and the soil and utility checks that need to happen first.
Sometimes, but the slab is usually the problem. A dry slab has no insulation or protection from frost heave, so a freezer conversion often means a new floor. A cooler is easier. We inspect the frame, the roof loads and the slab before saying yes.
A refrigeration engineer or contractor, not us. We coordinate the structure around their loads, openings and electrical needs and we plan the schedule so their equipment arrives when the building can accept it.
If a power outage would spoil product, yes, and the electrical service has to be sized for it. We discuss that with your electrician and the utility early because transformer and switchgear lead times can run longer than the building.
A small cooler can move quickly once the slab is set and the panels arrive. Larger freezer projects take longer because of floor work, refrigeration installation and commissioning. We give a schedule with those steps listed and the dates that depend on others.
Yes, with the right design. Rack loads, floor flatness and column placement are set at the start. Look at our clear-span buildings work for the open layouts these operators want.
Tell us about the site, the building and the schedule, and we will set up a review of scope, schedule and permitting.
See the services, building types and industries we plan and manage across Oklahoma.