Cold Storage Facility Construction in Denver, Colorado

Under a freezer, the ground wants to freeze too. A floor held at minus 10 degrees will draw heat out of the soil beneath it for as long as the building runs, and the ice lens that forms pushes the slab up unless the design stops it. In Denver, where the city handout in Lakewood lists a 36 inch frost depth, a cold storage floor needs its own thermal design, and the foundation cannot be borrowed from an ambient warehouse.

That detail is the clearest example of why a cold storage facility is a different building. The insulated envelope has to be continuous, the vapor barrier has to be placed and sealed, and the refrigeration plant has to be sized for door traffic, defrost and summer afternoons. Cold chain tenants also need access: Commerce City has two Class I freight rail lines, sits where three major interstates meet and is directly adjacent to Denver International Airport. A freezer at that location can receive inbound product by rail or truck and ship out by road the same day.

We construct freezers, coolers and mixed-temperature buildings for food distributors, processors and third-party cold chain operators. The cold storage construction team we coordinate builds from the slab up with refrigeration contractors who are brought into the design early.

The assembly from subgrade to roof

A freezer slab is a stack of layers. Beneath the structural slab sits a heated subslab, either glycol loops or an electric heating system, over a thick layer of rigid insulation, over a vapor retarder, over compacted subgrade. Above the insulation is a reinforced concrete wearing slab that carries rack loads and forklifts. We control the sequence carefully, because moisture trapped in the insulation or an unheated gap beneath a wall becomes a frost problem for the building's life.

Walls and roof are built from insulated metal panels or a similar system with a continuous thermal break. Door frames, vestibules and dock seals matter as much as the panel itself, since most heat enters at the openings. The industrial concrete floors team we coordinate places and finishes the wearing slab to the flatness the rack plan requires, and we coordinate panel joints and penetrations with the refrigeration piping so the seals are made once and made properly.

Dock design, ammonia and electrical load

The dock is the weakest link in a cold chain. A refrigerated dock has to keep the product cold when the door is open, so we design enclosed dock vestibules, sealed shelters, insulated levelers and cooled receiving rooms that hold product at temperature during trailer changes. Where a building is being converted, our refrigerated dock retrofits experience shows which existing conditions are worth keeping.

The refrigeration plant is the second consideration. Systems using ammonia require a machine room built to the applicable codes, with detection, ventilation and emergency controls, and the owner's process safety program comes with it. Electrical demand is large; compressors, evaporator fans, defrost heaters and lighting run constantly. We bring the utility into the project early because service upgrades often drive the opening date.

Codes and the Commerce City permit path

In Commerce City, the Home Builders Association of Metro Denver tracker dated January 20, 2026 lists the city on the 2021 IBC, IRC, IEC and IFC, with no plans to adopt the 2024 I-codes and an update expected in the 2027 cycle. A cold storage building permitted there will be reviewed to the 2021 edition and the local amendments, so the design team can fix its code basis early.

Energy compliance is a separate step. Colorado HB22-1362 requires any county or municipality that updates a building code on or after July 1, 2023 to adopt an energy code with performance at least equal to the 2021 IECC, and from July 1, 2026 the benchmark becomes the state model low energy and carbon code. Refrigerated buildings have their own treatment under these rules, and we involve the energy modeler and the mechanical engineer early so envelope and system choices are checked against the correct path.

A schedule built around the cold chain

Cold storage schedules carry a few unusual steps. Panels are manufactured to order, refrigeration equipment has a long lead time, and the building must be dried out and brought down to temperature in stages before product can be stored. Skipping the pull-down sequence can crack a slab or condense water on insulated surfaces, so we reserve time for it in the program.

Winter and summer present different problems. Concrete and insulation placement in cold weather needs protection, and summer heat adds load to the refrigeration commissioning. We sequence critical operations around the weather and coordinate with the refrigeration contractor so the plant is started, tested and balanced before the owner's operations team takes over. The commissioning plan includes testing of door alarms, pressure relief valves and monitoring systems.

What a freezer costs relative to a dry warehouse

Temperature drives cost. A freezer carries a heated subslab, thicker panels, heavier refrigeration and more electrical capacity than a cooler, and a cooler carries more than a dry building. Square footage still matters, but the largest swings come from temperature zones, number of dock doors and the type of refrigeration system. We ask owners for their product mix and temperature setpoints before we price.

Operating cost deserves a place in the capital discussion. Better insulation, tighter doors and efficient controls cost more to build and less to run, so we present the trade-off with payback assumptions the owner can test. If the project is also a distribution hub, a dry warehouse component can share the site, and a cold storage and refrigerated operator may phase freezer rooms after the first building opens. A neighboring logistics fulfillment center can share a common truck court.

Tell us the temperature zones and the product mix

Send the pallet capacity, the temperature setpoints and the site address, and we will provide a preliminary scope, a utility review and a schedule that includes pull-down and commissioning.

Common Questions

How cold can a Denver freezer floor go before frost heave becomes a risk?

Any floor held below freezing can drive frost into the soil if there is no heat beneath the insulation. With a frost depth of 36 inches listed in the Lakewood handout, the metro already has seasonal frost, and a freezer will exceed it. We include a heated subslab, a vapor barrier and drainage so the ground never freezes under the building.

Is a rail connection useful for a cold chain building?

It can be, particularly for frozen or bulk product moving in refrigerated rail cars. Commerce City has two Class I freight lines, and a parcel with rail frontage gives the tenant a second inbound option. The track costs money, so we price the spur and the truck-only layout together.

Can we convert an existing warehouse to cold storage?

Sometimes. The existing slab, roof structure and electrical service decide whether the conversion is sensible. A slab without a heated subslab cannot hold a freezer, so a freezer room generally requires a new insulated floor. We assess the building before you commit to the conversion.

What happens to the schedule if the refrigeration equipment is late?

The building cannot be commissioned without it, so we order early and track delivery weekly. If a delay appears, we look for ways to stage the work, for example starting a cooler room before a freezer room, so some of the building can open on time.

Who handles refrigeration design?

A refrigeration engineer and contractor, working with our team from preconstruction. We coordinate the structure, electrical and controls around the refrigeration design so the slab, penetrations and power are ready when the equipment arrives.

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