Product temperature, dock dwell time and refrigeration load are the three numbers a cold chain operator brings to a builder, and the building is the tool that holds all three. A processor with a blast freezer, a third-party logistics firm with a multi-temperature warehouse and a grocer with a regional cross-dock each need a different envelope, but all of them lose money the minute a door stays open or a floor heaves.
We build for those owners with the refrigeration engineer in the room from the first meeting. The insulated envelope, the vapor retarder, the slab with its underfloor protection, the dock doors and the machinery room are one system, and the contractor who treats them as separate trades is the one who delivers a building that frosts up in July. Our delivery model keeps one accountable team over the slab, the shell and the dock, then hands the refrigeration contractor a building that is ready to pull down.
The pages on cold storage facilities and cold storage construction cover method in detail. This one speaks to the owner's side: what drives the decision to build, where in Colorado the supply chain sits, and how to compare proposals from builders who have not done this before.
Decisions the owner makes before drawings
Three choices set the cost and the schedule. The first is the temperature zones: a single freezer, a mix of freezer, cooler and dry, or a flexible room that can change duty. Each zone needs its own envelope detail and its own door arrangement. The second is the refrigerant. Systems with large ammonia charges bring process safety management requirements and a longer conversation with the fire authority, while lower-charge or distributed systems change the machinery room and the roof loads. The third is the storage system, because racking, shuttle or automated storage puts point loads on the slab that are far higher than a warehouse sees.
These choices have to be made before the foundation is designed, since the floor and the structure follow them. We run a short decision workshop in preconstruction and write the outcomes into a basis of design the owner signs. Changes after that point are priced with their schedule effect, because a revision to the refrigerant or the storage system after footings are poured is among the costliest edits a cold project can see.
Slab, envelope, docks and machinery room
A freezer floor is built as a stack: structural slab, insulation rated for the load, a vapor barrier and a protective layer, with a heating or ventilation system beneath so that soil never freezes and swells. Unincorporated Weld County adopted the 2024 International Building Code effective June 15, 2026, with engineered foundation designs required for most new structures, and we treat a cold building the same way on any parcel, with a geotechnical report and a foundation design that accounts for both soil movement and the cold. Where soils are poor, drilled piers carry the structure, as in our deep foundations and piers scope.
The envelope is insulated metal panel or insulated precast, with continuous vapor sealing at every penetration. Docks are the weak point, so we detail seals, shelters, vestibules and air curtains with the refrigeration engineer, and set door types by the temperature zone they serve. Machinery rooms, evaporators and condenser pads are built on a separate coordinated schedule so the refrigeration contractor starts on a clean, dry, powered space.
Processing, rail and interstate nodes in Colorado
Cold storage here follows the producers and the freight. Leprino Foods built its Greeley cheese plant as an over $250 million, 883,000 square foot facility designed to use more than 7 million pounds of milk per day at full build-out, with up to 500 employees expected in 2011 and nearly 600 planned by 2016. A plant at that scale needs product holding, blast freezing and outbound staging close by, which builds demand for refrigerated space across Greeley and the south Platte corridor.
Commerce City reports two Class I freight rail lines, sits where three major interstates meet and is directly adjacent to Denver International Airport. Limon calls itself the Hub City because I-70, US 24, US 40, US 287 and Colorado Highway 71 all meet there, and it is served by the Union Pacific Railroad and the Kyle Railroad. These nodes matter to a cold chain operator because the choice of site decides how many trucking hours stand between a freezer and its customer. A location with rail adjacency can also support inbound ingredient flow, and we design the site to leave room.
Retrofits, adjacent buildings and the logistics tie
Not every owner needs a new building. Existing dry warehouses are converted to cooler or freezer duty with a new envelope, new docks and a new slab in the cold zone, and our refrigerated dock retrofits handle the dock end of that work in an operating facility. Those jobs run in phases, because the warehouse is still shipping, and the sequence keeps the cold chain intact.
Cold storage seldom stands alone. Many operators pair it with processing, which is why we also build for food and beverage plants, and with ambient distribution, covered on our page for logistics and distribution. The cold space shares truck courts, fire water and electrical service with its neighbors, and planning those shared systems together saves the owner from tearing up new pavement or a new feeder in year three.
Where the money goes in a refrigerated building
The refrigeration package, the insulated envelope and the electrical service usually account for most of the premium over a dry warehouse. Floor insulation and underfloor protection are a close fourth. Within the builder's scope, the largest controllable items are the slab detail, the number of dock doors and their equipment, and how well the envelope is sealed, since a leak found at commissioning means panels come off.
Operating cost belongs in the budget conversation too. A better door, a tighter envelope or heat reclaim from the machinery room costs more at construction and saves energy every month the building runs, and we put those alternates beside their simple payback so the owner can decide. We also ask the serving utility early about service size and rate structure, because a refrigeration load changes the electrical service requirement from the first day.
Bring the temperature zones and the throughput target
Send the product list, zone temperatures, pallet positions and the number of dock doors you expect to run. We will return a basis of design, a long-lead list for the refrigeration and panel packages, and a schedule with the pull-down date stated.
Common Questions
How long does a pull-down and commissioning take on a new freezer?
It depends on the room size and the refrigeration design, but the sequence is fixed. The building has to be sealed and powered, the system charged and started, and the rooms brought down in stages so the slab and insulation are not shocked. We carry that period in the schedule as its own block, and the refrigeration contractor and the owner agree the acceptance test before the first room is cooled.
Why do freezer slabs need protection from the ground?
A freezer holds the floor near or below freezing, and the cold works down into the soil. If the soil beneath is moist, it freezes and expands, which can lift the slab and the walls. Underfloor heating or ventilation keeps the soil from freezing, and a geotechnical report tells us how much protection a given site needs.
Can an existing warehouse be converted to cold storage?
Often yes, if the structure can take the added loads and the floor can be rebuilt. We check roof capacity for new refrigeration equipment, clear height for the storage system, electrical service and the condition of the slab before recommending a conversion. If the building does not pass, we say so and price a new building for comparison.
What do you need from us to price a cold building accurately?
Zone temperatures, product type, storage system, pallet count, dock door count and the refrigerant choice. Even a rough list lets us estimate the envelope, slab and electrical service. We refine the number as the refrigeration engineer finalizes the design.
How do you keep the cold chain running during a retrofit?
By phasing and by isolating. Work happens at one dock or one zone at a time, with temporary vestibules and barriers, and tie-ins to refrigeration lines are scheduled in short outages that the operator approves. We keep a daily log of door status and room temperature, so the operator sees any deviation immediately.