- Location
- Caernarfon, Gwynedd
- Main postcode district
- LL55
- Nearby (straight line)
- Llangefni (8 miles), Bangor (9 miles) and Holyhead (19 miles)
- Survey and quote
- Free, with a fixed written quote
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.
Where does this fit at a dock in Caernarfon?
Any cold store dock survey in Caernarfon is carried out with the store running, so we can see ice, seals and traffic as they really are. Food manufacturers in Caernarfon moving finished product into frozen storage need doors that resist ice and close quickly behind each forklift or trailer movement.
A chilled distribution centre in Caernarfon opens its dock doors many times a shift, so the door specification matters far more than at an ambient bay.
If you are planning cold store dock doors for a site in Caernarfon, expect four stages. A free survey and fixed written quote come first. We then agree a programme with you, including any out-of-hours work. Specialist installation engineers carry out the installation under our management, with us as your single point of contact. Finally, the equipment is tested, your staff are shown how it works and everything is handed over with its documentation.
How should a door be specified for a chilled dock compared with a freezer dock?
A chilled dock needs a well-insulated, well-sealed door, while a freezer dock also needs heating to stop ice forming in the frame and seals. The temperature difference across the door drives most specification choices.
- Chilled docks: an insulated sectional door at the thicker end of the common 40 to 80 mm panel range, good perimeter seals and a shelter or seal outside usually do the job.
- Freezer docks: thick panels, thermal breaks in the panel joints, heated side frames and a heated bottom seal, plus a fast operator to cut open time.
- Doors between zones: an insulated high-speed door often suits openings between a chilled marshalling area and a freezer, where traffic is constant.
- Vision panels: possible, but they reduce insulation and can mist, so many freezer docks leave them out.
A cold store door is only as good as the seal around the trailer, which is why we specify the door, shelter and leveller together.
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.
The same published guide range applies across Wales; access, out-of-hours working and site conditions are confirmed at the free survey.
What do we check at the survey?
- Working hours, shift patterns and windows for out-of-hours work
- Control positions, isolators and any existing interlocks
- Wall and steel structure for door, shelter and bumper fixings
- Dock height and the mix of trailers you load
- Traffic routes for vehicles and separation of pedestrians
- Scope to convert ground-level doors into docks or add lift tables
Options to discuss
Insulated sectional cold store door
Thick insulated panels with thermal breaks and full perimeter seals, the usual choice for chilled and frozen external dock openings that also need to be secure overnight.
Heated frames and seals
Low-power heating in the side frames, bottom seal or threshold that keeps contact surfaces above freezing so the door does not ice up or tear its seals.
Which rules apply in Wales?
Wales has its own energy requirements for buildings, set out in Approved Document L for Wales. For new or replacement loading bay doors in Caernarfon, we confirm the figure that applies to your project rather than assuming the English one, and we check what applies at survey before a door is specified.
Questions about cold store dock doors in Caernarfon
How do you price cold store dock doors for a site in Caernarfon?
Guide budgets for supply and fit are £4,800 to £9,500 per door, excluding VAT. The figure moves with size, insulation, the operator, electrics, access, any pit or groundworks and out-of-hours working. Where levellers are involved, the guide assumes an existing, sound pit. After the free survey you receive a fixed written quote, and that is the price for the agreed scope.
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 Caernarfon, 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.
How long does installation take at a site in Caernarfon?
It depends on the equipment, the number of bays, the condition of the dock and whether any building or electrical work is needed. We agree a programme with you after the survey, setting out which bays are out of use and when. Larger jobs are usually phased so that part of the dock stays open, and out-of-hours working can be arranged.
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.
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.
Cold store dock doors near Caernarfon
Businesses outside Caernarfon may find their nearest town in this list: Llangefni (8 miles), Bangor (9 miles) and Holyhead (19 miles). Each page covers doors, docks, repairs and servicing.
Other loading bay services in Caernarfon
Full guide to cold store dock doors · Everything we do in Caernarfon
Phone us to discuss your loading bay in Caernarfon, or start with the online quote tool if you prefer to send details first.