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How a multipoint door differs
Quick answer
A multipoint door can secure at several places along its edge, while a cylinder and handle operate the arrangement. The exact system varies. Describe whether the handle lifts, the key turns and the door closes properly. A problem with any one of those actions does not automatically mean the cylinder has failed. Ask the locksmith to identify the mechanism and assess the complete door. A repair should leave its locking points operating correctly, rather than simply make the handle feel easier.
Stiff when closed, easier when open
Tell the contractor if normal operation differs with the door open and closed. That observation can help investigate alignment and how locking points meet the frame, but it is not a diagnosis. Movement, worn components or previous adjustment may contribute. Stop forcing the handle or key. Ask what is being adjusted and whether fixings, hinges, keeps and surrounding condition have been checked. A cylinder replacement alone may not resolve a door that is difficult to close into its frame.
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Cylinder versus gearbox faults
The cylinder, gearbox and other locking components have different roles. Ask which part is defective, what evidence supports that conclusion and whether compatible parts are available. A lost-key cylinder change differs from repairing a mechanism that has jammed while locked. Where a replacement is required, clarify the product and whether the rest of the system will be retained. Do not order a guessed part from a photograph or dismantle the mechanism; identification and safe access are part of the professional job.
Give the contractor any paperwork from the original installation and details of earlier repairs. A compatible part may need to be ordered, so clarify whether the first visit is diagnostic or intended to complete the job. Ask how the door will be left if the correct component is unavailable. A second visit, additional keys or a change of mechanism can have separate costs; establish those before assuming the initial attendance estimate includes the whole repair.
A door that will not open or secure
If the mechanism is stuck with the door shut, professional access and repair can be more involved than routine servicing. Tell the attending business whether people have a safe alternative exit. If the door will not lock, seek direct help to make the property secure rather than assuming a submitted enquiry reserves attendance. Avoid forcing bolts, drilling hardware or relying on an improvised barrier. A temporary measure and permanent repair should be explained separately, including how the entrance is left usable and secure.
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Check operation before ordering parts
Essex Police’s guidance explains that multi-locking uPVC doors require the handle to be lifted and the key turned to engage their locking points. If your door will not complete that sequence, describe whether it works when open, whether the handle is loose and where resistance occurs. Do not force a mechanism that is binding.
Ask the inspection to distinguish alignment, gearbox, cylinder and locking-strip faults, and to identify compatible parts. The visible cylinder alone does not establish the whole mechanism’s condition. Agree adjustment versus replacement, how the finished door will be tested and what happens if the first proposed part does not resolve the fault.
Replacement frames and protected buildings
Repairing a lock and replacing a complete door or frame have different effects on a building. If a quotation expands into a new entrance, ask why repair is unsuitable and what changes to appearance, opening size and retained fabric are proposed. Security specifications should be stated separately from decorative choices.
Check Braintree’s current listing and conservation records before making alterations at a protected property. The Bradford Street appraisal describes retained traditional fabric; it is not evidence that all entrances there are original or that uPVC is suitable everywhere. Seek property-specific advice rather than treating a neighbouring replacement as approval for your door.
Sources: Bradford Street appraisal August 2023 · Listed buildings and mapping · Working on listed buildings · Check planning permission
What a quote should explain
Ask whether the quote includes…
Ask for the diagnosis, part description, fitting and alignment work, VAT and any return visit if a component must be ordered. Clarify whether the proposed remedy restores all locking points or is temporary. If the original mechanism is discontinued, ask what compatible alternatives exist and whether additional work changes the cost. A whole-door replacement should not be presented as the only option without an explanation. Compare the scope and demonstrated operation.
- The faulty component, not just a vague “new lock”.
- Compatible parts and all necessary adjustments.
- Tests of normal closing, locking and opening.
Keeping the repair working
Ask the contractor about maintenance appropriate to the actual system. Avoid using an unsuitable lubricant or repeatedly forcing a stiff mechanism. Operate the door normally and report changes early. Keep the part details and invoice so future work can be based on the fitted system. If a fault returns, record whether it happens when the door is open or closed and with all keys or only one. A recurrence needs a fresh assessment; this site cannot diagnose it from a postcode or promise a particular fix.
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