Guide
Cold room panel installation: what actually happens on site
Updated
Most commercial cold rooms are modular: insulated panels locked together on a prepared floor, with the refrigeration added afterwards. Knowing the sequence tells you what to prepare, and what a quote is quietly assuming.
The sequence
- Survey. Someone measures the space, checks the access route and the floor, and works out where the plant and any condenser can go. Do not skip this to save a visit.
- Floor. The base is set out on a level, sound floor. Freezer rooms normally need an insulated floor; chill rooms sometimes run on the existing slab with a threshold. Any ramp, drain or slab cutting happens here.
- Panels. Wall panels are stood and locked in sequence, then the ceiling panels go on. The room has to be built in the order the panel set was made for, which is why a missing panel stops the job.
- Door. The door set is fitted and squared. On freezer rooms this includes the heated frame and its supply.
- Sealing. Joints and floor-to-wall junctions are sealed. This is the difference between a room that holds temperature and one that sweats and ices up.
- Plant and electrics. The evaporator goes inside, the condensing unit inside or outside depending on the arrangement, pipework and controls are run, and the electrical supply is terminated.
- Commissioning. The system is charged, leak tested and run down to temperature, controls and defrost are set, and you get the handover pack.
What the installer needs from you
- A clear, level floor in the footprint on the day. Panels cannot be stood on a floor that is still being laid.
- An access route that the panel sizes actually fit through. Tell the installer about tight corners, stairs, lifts and door widths before the panels are made, not after.
- An electrical supply of the right rating in the agreed position, unless the quote says the installer is providing it.
- A decision on the condenser position if the plant is remote, including whether it will be on a roof, a wall or a plinth, and whether noise matters to neighbours.
- Realistic working hours. A live kitchen or retail floor may mean evening or weekend work, which is a price, not a favour.
Where these jobs go wrong
- Access measured optimistically. The commonest cause of an install stalling on day one. Panels are made to size; they do not fold.
- Floor not ready or not level. Everything above it inherits the error, and the door will not seal.
- Drainage forgotten. Defrost water and washdown water need somewhere legal to go. Retrofitting a drain into a finished floor is expensive.
- Nobody owns the electrical supply. Each side assumes the other priced it. Put it in writing.
- Handover skipped. If you are not shown the controls and given the F gas paperwork, the first fault becomes a callout. See the record-keeping duties.
None of this is unusual work for a competent firm. It goes wrong when the survey was a phone call. Get installers to look at the job and quote it properly.