A freezer slab held far below freezing will freeze the soil beneath it, and in Casper that soil is already working against you. The City of Casper lists a 3 foot frost line to top of footing, a 3,000 air freezing index and severe weathering, and a freezer adds a second, permanent source of cold underneath the floor. If the ground heaves, the slab heaves with it, the racking goes out of plumb and the owner is left with a repair that costs more than the original floor. Cold storage is the building type where the foundation is the first thing we design.
The building itself is a cold box: insulated metal panels, a continuous vapor barrier, sealed penetrations, vestibules and dock doors with seals that actually close. Each of these has to be installed with more care than anything in a dry warehouse, because a gap that would be a draft in an ordinary building becomes a frost patch, an ice-covered floor and a refrigeration load. We build coolers, freezers and blast chill rooms for food distributors, grocers, processors and anyone else keeping product cold.
The market is real, if modest. Casper is Wyoming's second-most populous city at 59,038 residents in the 2020 census, and a logistics firm is headquartered here. The metro is a natural hub for a regional food distributor, which is where our distribution center construction work and the cold storage facility building type meet.
We start with the site and a sub-slab design that keeps the freezer from heaving the soil: insulation, vapor barrier and either heated glycol or ventilated underfloor ducts. Above that, commercial concrete floors are placed with controlled joints, because a freezer slab cycles through a wide temperature range at start-up and again in any outage. Walls and roof panels follow, with the vapor barrier continuous at every joint.
The refrigeration system is designed by a specialty engineer and installed by a refrigeration contractor, and we coordinate its schedule with the building. Evaporator support steel, penetrations through the roof and walls, pipe racks and machine room structure are part of the construction contract. Pull-down, the period when the room is brought to temperature, is a staged process that we put on the schedule with float.
The City of Casper lists the 2024 International Codes with amendments in Title 15, and commercial permits there often require a life-safety plan, engineered drawings and Planning/Zoning approval. A cold storage building adds refrigerant safety, ventilation for machine rooms, emergency egress from freezers and fire protection suited to insulated panels. We review those with the building official before design is final.
Climate drives other choices. The city lists climate zone 6B and severe weathering, and an insulated building in a place that sees both cold winters and hot summers has to manage condensation on both sides of the envelope. Midwest, Wyoming has recorded a high of 106 degrees and a low of minus 42, which is a reminder that the panels and seals see the full range, not the average.
Cold storage jobs fail on details. Panel joints, door frames, penetrations and the transition from the freezer floor to the dock must all be detailed and inspected. We carry a quality checklist for the envelope and photograph concealed work before it is closed in.
Power matters as well. A refrigeration plant is a major electrical load, and the utility service, the switchgear and the standby power need to be sized with the refrigeration engineer. If the building is in a town without three-phase service nearby, extension takes time. We raise this in the first meeting and put the utility on the master schedule. When the project is part of a larger site development package, we phase utility work to avoid conflicts.
A cold storage building usually costs several times what a dry warehouse costs per square foot. The drivers are the insulated envelope, the sub-slab system, the refrigeration plant and the electrical service. Freezers cost more than coolers, and blast freezers cost more than storage freezers. Automation, such as racking that supports automated retrieval, adds foundation and slab requirements.
Operating cost is as important as first cost. Thicker panels, better doors and tighter envelopes lower the refrigeration load for the life of the building. We run the numbers on panel thickness and show the payback, so the owner is not just buying the cheapest envelope. A small air leak around a door frame is not a line anyone budgets for, but across a full year of Casper weather it is what shows up on the power bill. The concrete foundations trade partner handles the frost-protected footings and the sub-slab work.
Food distributors, grocery and restaurant suppliers, beverage companies and food processors are the typical buyers, and many fall under logistics and distribution. Smaller operators sometimes need a cooler attached to a processing room, and larger ones want a standalone building with dock doors on two sides.
Casper and the towns along I-25 such as Douglas have the highway access to serve a wide region. We price a cooler addition on an existing building as well as a new freezer warehouse, and our food and beverage processing work shares the sanitary finishes and drains that many cold buildings need.
Send the product, the temperature range and the daily throughput. We will return a building concept, a sub-slab approach and a schedule that includes pull-down and commissioning.
Without one, the cold from the freezer slab drives frost into the soil below and the ground can heave. Casper already has a 3 foot frost line, so the added cold makes the problem worse. Heated glycol or ventilated underfloor ducts keep the soil above freezing.
Longer than a dry warehouse of the same size. The sub-slab system, panel installation, refrigeration plant and commissioning all add time. We build a schedule that names each, and we tell you which one is controlling the date.
Sometimes. The existing slab has to be able to take the new loads and the new sub-slab system, and the building envelope has to accommodate the panels. A cooler room built inside an existing building can be simpler than a freezer, which usually needs a new slab.
Refrigeration needs a lot of electrical capacity, and an outage is expensive. We coordinate with the refrigeration engineer on service size and with the owner on standby power, and we put the utility lead time on the schedule at the start.
Both. Cold outside air can reduce the load on a cooler, but cold weather hurts concrete work and panel installation. We plan the concrete work for the warmer months where we can and heat enclosures when we must.