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.
Why do sites in County Londonderry choose this?
Converting an ambient unit in County Londonderry to chilled storage usually means replacing standard dock doors with insulated ones and sealing around the trailers. A chilled distribution centre in County Londonderry opens its dock doors many times a shift, so the door specification matters far more than at an ambient bay.
Pharmaceutical and healthcare stores around County Londonderry with tight temperature ranges can pair an insulated dock door with interlocks so the opening stays closed until a trailer is sealed.
Our part of the job in County Londonderry 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.
How does a cold store door work with the shelter and leveller?
On a cold store dock the door, shelter and leveller should work as one system, with the door opening only once the trailer is sealed against the building and closing before the seal is released.
A typical sequence is:
- The trailer reverses onto the bumpers and is held by a restraint, or the driver's keys are taken.
- The shelter inflates or the seal compresses around the trailer.
- The door opens and the leveller lip is lowered onto the trailer bed.
- Loading takes place inside a sealed link between store and trailer.
- The leveller is stored, the door closes, then the shelter releases.
Interlocks make this sequence automatic, so the door cannot be left open with no trailer present. Insulated leveller platforms and seals around the pit also reduce cold loss through the floor of the bay.
How much does a cold store dock door cost?
A cold store dock door typically costs £4,800 to £9,500 per door, excluding VAT, supply and fit. Chilled docks usually sit lower in that range than freezer docks, because freezer doors need more insulation and frame heating.
Price is mainly driven by:
- Operating temperature: chilled, frozen, or a door between two temperature zones.
- Door type: insulated sectional, insulated high-speed, or both at one opening.
- Heating: heated frames, heated bottom seals or threshold heating to stop ice forming.
- Panel thickness and thermal breaks: thicker panels and better breaks reduce condensation and heat gain.
- Controls: faster operators, interlocks with shelters and levellers, and automatic closing.
- Working conditions: installing in a live cold store often means out-of-hours work and temporary screening.
We price each door after a free site survey, and the written quote fixes the cost.
Towns we cover in County Londonderry
Below is a list of towns in County Londonderry for cold store dock doors. Each page explains our approach for sites in that town.
Budget range for supply and fit. The written quote after a free survey is the fixed price. All guide prices.
Regulations and approvals in Northern Ireland
In Northern Ireland, the CE mark (or CE with UKNI) applies to powered doors and dock equipment. We hand over the documentation for each item fitted in County Londonderry, and because building control and planning are handled by the council, we check what applies at survey before any dates are set.
Questions
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 County Londonderry 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.
Do you cover County Londonderry for cold store dock doors?
Yes. We take on cold store dock doors for businesses in County Londonderry and across County Londonderry. We survey the site, provide a fixed written quote and manage the installation, with specialist installation engineers working under our management. Visits are arranged in advance at a time that suits your operation, and the same single contact stays with the job through to handover.
Do heated door frames use a lot of power?
Frame and seal heaters are low-power elements designed to keep surfaces just above freezing rather than to heat the dock. Many can be controlled by a thermostat so they only run when needed. We set out the supply required in the written quote so it can be planned before installation.
What happens to a cold store door in a power cut?
In a power cut the door stops where it is and the frame heating switches off, so it must be possible to operate the door by hand. Powered dock doors normally have a hand chain, crank or release for this. We show your team how to use it at handover so the store can be closed up quickly.
Other services in County Londonderry
Full guide to cold store dock doors · All loading bay services in County Londonderry