A cold store dock door is an insulated loading bay door built for chilled or frozen buildings, usually a sectional door with thick insulated panels or a high-speed door with an insulated curtain. It differs from a standard dock door in its thermal breaks, extra seals and, on freezer docks, heating in the frame or seals so that ice cannot lock the door shut or tear the seals.
What should sites in the Scottish Borders consider?
When an older cold store in the Scottish Borders has a door that has been repaired many times, a planned replacement can be timed for a quieter trading period. During warm, humid spells, any cold store dock in the Scottish Borders is most exposed to condensation and ice, which is why heated frames and good shelters are worth considering.
Converting an ambient unit in the Scottish Borders to chilled storage usually means replacing standard dock doors with insulated ones and sealing around the trailers.
Our part of the job in the Scottish Borders is to survey, quote and manage; the fitting itself is done by specialist installation engineers working under our management. The survey and the written quote are free. Once the fixed price is accepted, we agree dates that work around your deliveries and shifts, including out-of-hours working where needed. Every installation is tested before handover, and you receive the documentation for each item fitted.
Why does ice form around a freezer dock door, and how is it stopped?
Ice forms when warm, moist outside air meets the cold surfaces of the door, frame and floor, and the moisture freezes. Over time it builds up in the seals and guides until the door jams or tears its seals.
Ice is controlled by tackling both the cold surfaces and the warm air:
- Heated frames and seals: low-power heating in the side frames and bottom seal keeps those surfaces above freezing.
- Threshold heating: stops the door freezing to the floor.
- A tight seal at the trailer: an inflatable dock shelter or a well-fitted seal keeps outside air away from the opening.
- Short open times: fast operators and interlocks mean the door is only open while a trailer is sealed to the dock.
Condensation dripping inside the store near the door is an early sign of the same problem and worth raising at survey.
How can a cold store door be replaced without losing temperature?
A cold store door can be replaced with very little temperature loss if the work is planned around the store, with the opening screened and the fitting done in one continuous visit.
On a live cold store we usually:
- schedule the work for the quietest period, often overnight or at a weekend,
- fit a temporary insulated screen or strip curtain while the opening is exposed,
- remove ice from the old frame and threshold before fixing the new door,
- pre-assemble as much as possible so the opening is exposed for the shortest time.
From your side we need product moved back from the opening, any site permits for working in cold areas, and power for the operator and frame heaters. Heated frames typically need their own supply, which we set out in the quote. Our cold store loading bays guide covers planning the work in more depth.
Towns we cover in the Scottish Borders
Choose a town below to see how we handle cold store dock doors in that part of the Scottish Borders.
Budget range for supply and fit. The written quote after a free survey is the fixed price. All guide prices.
What do the rules in Scotland mean for the work?
Energy standards for buildings in Scotland are set out in Section 6 of the Building Standards Technical Handbook. For new or replacement loading bay doors in the Scottish Borders, we confirm the figure that applies to your project and check what applies at survey, rather than relying on rules written for elsewhere in the UK.
Questions
Do you remove and dispose of the old equipment?
Yes, where it is part of the scope. When we replace doors, levellers, shelters or seals at a site in the Scottish Borders, removal and disposal of the old equipment can be included and is itemised in the quote, so it is clear what is covered. If anything should be kept, such as a frame or motor that is still serviceable, we agree that at survey.
What warranty comes with new loading bay equipment?
New equipment comes with the manufacturer's warranty, which varies by product. Our workmanship terms are set out in writing in the quote for your the Scottish Borders site, so you can see what is covered before you commit. Check the warranty terms for any servicing conditions, and we can quote for planned maintenance once the installation is complete.
Can a standard sectional door be used on a chilled dock?
A standard insulated sectional door can work on a chilled dock if its panels are thick enough and its seals are in good condition. For frozen docks it is not usually suitable, because it lacks the thermal breaks and frame heating needed to stop ice forming. We advise on the right specification after surveying the store.
Will a new door reduce our refrigeration load?
A better-sealed, better-insulated door that stays shut except when a trailer is docked reduces the warm air entering the store, which is a significant source of load at a cold store dock. We cannot promise a figure, because results depend on your store, traffic and the rest of the dock, but the mechanism is well understood.
Other services in the Scottish Borders
Full guide to cold store dock doors · All loading bay services in the Scottish Borders