The key will not turn
The cylinder may be worn, the key may be damaged, or pressure from a misaligned mechanism may be preventing the lock from turning.
uPVC door lock service · Norwich
uPVC Door Lock Repairs Norwich
Restore secure locking and smooth door operation with careful diagnosis, suitable replacement parts and professional adjustment.
Full mechanism diagnosis
Compatible parts identified
Door alignment checked
Prompt fault assessment
Local repairs for stiff, loose or failed uPVC door locks
A uPVC door that will not lock properly can leave your home exposed or prevent you from using the entrance at all. Norwich locksmiths provides uPVC Door Lock Repairs Norwich for doors with stiff handles, misaligned locking points, failed gearboxes, worn cylinders and keys that no longer turn correctly.
The first task is to establish whether the fault sits in the lock, the cylinder, the handles or the door's alignment. Replacing parts before checking the whole door can waste money and leave the original problem unresolved. Before recommending a repair, Norwich's local locksmith service inspects the mechanism and how the door sits in its frame.
Prompt attention can also limit further damage. Forcing a stiff handle may break the central gearbox, while repeatedly lifting a dropped door can strain the hooks, rollers and keeps. If the door still operates, stop forcing it and arrange an inspection. If it is stuck open or will not secure, treat it as an urgent fault.
Understanding the mechanism
What can go wrong with a multipoint door lock?
Most modern uPVC entrance doors use a multipoint locking strip. Lifting the handle moves several locking points along the door edge, such as hooks, rollers, mushrooms or bolts. Turning the key then secures the mechanism. The exact strip, backset, faceplate and spindle position vary by manufacturer, so correct identification matters when parts are required.
A stiff handle often points to poor alignment between the locking points and the keeps in the frame. Hinges can settle, the door can expand and contract with temperature changes, or the keeps may have moved. A handle that lifts normally but will not lock may indicate a cylinder or gearbox fault. If the handle is floppy, spins freely or remains down, an internal component may have failed.
Norwich has a mix of older properties and later housing developments, and replacement uPVC doors fitted at different times can use very different lock strips. In areas such as the Golden Triangle, period homes often have modern uPVC doors retrofitted into older openings, making frame fit and alignment worth checking closely. Newer suburban doors can still develop wear at the gearbox or locking points after repeated use.
Problems and likely causes
Common uPVC door lock faults we investigate
The handle is stiff
Resistance while lifting the handle commonly indicates that hooks, rollers or bolts are binding against the frame keeps.
The handle is loose or floppy
Worn handles, a broken spring cassette or failure inside the gearbox can leave the lever loose or unable to drive the mechanism.
The door will not close properly
Dropped hinges, frame movement or incorrect keeps can stop the door meeting the frame squarely and place extra load on the lock.
The key turns but the door stays locked
A disconnected or failed gearbox can prevent the key and handle from withdrawing the locking points.
The mechanism is obsolete
When an exact lock strip is unavailable, a compatible gearbox or replacement multipoint system may be possible after careful measurement.
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01
Inspect the symptoms
We check the key, cylinder, handles, spindle and full locking strip. The door is tested both open and closed, where possible, to separate a mechanical lock fault from an alignment problem.
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02
Identify the mechanism
Relevant measurements and markings are recorded, including the backset, centres, faceplate width and positions of the locking points. This helps determine whether a component or complete strip is suitable.
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03
Explain the repair
You receive a clear account of the fault and the work needed. A serviceable lock may need adjustment or a specific component rather than wholesale replacement.
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04
Repair, replace and adjust
The affected component is repaired or replaced, then hinges and keeps are adjusted where required. Suitable lubrication is applied to moving metal parts without flooding the cylinder.
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05
Test the complete door
The handle, key and locking points are operated repeatedly with the door open and closed. The final check confirms that the door closes squarely and locks without excessive force.
Complete-door repair
Repair the cause, not only the failed part
A failed gearbox may be the immediate reason a door will not lock, but misalignment may have caused that failure. Installing a new gearbox without correcting binding hooks or rollers can put the replacement under the same strain. A sound repair addresses both the broken component and the door's operation.
Adjustment can include repositioning keeps, correcting hinge alignment and checking compression against the seals. The goal is firm engagement without needing to pull, push or lift the door excessively. Replacement components must also match the existing system. Cylinder length, cam type, handle centres and spindle dimensions all affect fit.
In Norwich's exposed winter weather, a door that does not close evenly can also admit draughts and moisture around the seals. Seasonal temperature changes may make an existing alignment issue more noticeable, but a lock should still operate without force. Spraying general-purpose oil into every opening rarely fixes a structural or mechanical fault and can attract dirt inside the cylinder.
Typical repair pricing
How Much Do uPVC Door Lock Repairs Cost in Norwich?
A straightforward uPVC door lock repair in Norwich typically costs £90 to £180, while a replacement gearbox or multipoint locking strip may cost about £150 to £350 or more. These are general estimates, not fixed prices. The final amount depends on the fault, required parts, lock make, door condition, access and whether urgent attendance is needed. Obsolete mechanisms may take longer to identify or require a compatible replacement system. The exact cost is confirmed after the door and locking mechanism have been inspected.
Request a CallbackPractical repair decisions
When repair is suitable and when replacement makes sense
Repair or adjustment is usually worth considering when the main locking strip is sound and the fault is limited to alignment, handles, a cylinder or a replaceable gearbox. It may preserve compatible parts already fitted to the door and avoid unnecessary changes.
A full mechanism replacement can be the better option when the strip is bent, several locking points are damaged, the gearbox is obsolete with no suitable substitute, or previous modifications have left the system unreliable. The condition of the door and frame also matters. A badly distorted or cracked door may not hold adjustment, even with new lock parts.
Security should be considered as part of the decision. If a cylinder is damaged, projecting too far beyond the handle or showing heavy wear, a suitable replacement may be advised. Any replacement still needs to match the door hardware and mechanism rather than being selected by appearance alone.
Norwich city-centre properties and homes around Thorpe Hamlet can have entrances opening close to pavements or shared access routes. Safe working space and the need to keep the entrance controlled are considered when planning the repair. For tenanted or shared properties, confirm who can authorise work before attendance.
A lock that is becoming stiff rarely improves on its own. Arrange an assessment before forcing the handle causes more damage or leaves the door unable to secure.
Call for a Free QuoteUseful answers before repair
Questions about uPVC door lock repairs in Norwich
Can a uPVC door lock be repaired without replacing the whole mechanism?+
Yes, many faults can be resolved by adjusting the door or replacing one compatible component. A cylinder, handle set, spring cassette or central gearbox may be replaceable while the main strip remains in service. The mechanism must be inspected and identified first because dimensions and connection points vary.
How quickly can a faulty uPVC door lock be repaired?+
Many common faults can be diagnosed and repaired during one attendance if a suitable part is available. Obsolete or less common multipoint strips may require sourcing after measurements and manufacturer markings have been checked. A Norwich property with a door stuck open or unable to lock should be treated as urgent.
Why does my uPVC door lock when it is open but not when it is closed?+
This usually indicates that the locking points are not lining up correctly with the keeps in the frame. The door may have dropped at the hinges, or one or more keeps may need adjustment. Continuing to force the handle can damage the gearbox, so alignment should be corrected before normal use resumes.
Can you open a uPVC door when the mechanism has failed in the locked position?+
A failed mechanism can often be opened using methods selected to limit damage, but the approach depends on the door, cylinder and position of the locking points. Once access is gained, the gearbox or locking strip can be identified and the door checked for the strain that contributed to the failure.
Should I replace the cylinder at the same time as the multipoint lock?+
The cylinder only needs replacement if it is damaged, worn, unsuitable or incompatible with the repaired mechanism and hardware. It is separate from the multipoint strip, although the two work together. Cylinder size and projection should be checked against the thickness of the door and handles.
What information helps before a Norwich uPVC lock repair visit?+
Describe whether the door is open, closed, locked or unlocked, and explain what happens when the key turns or the handle lifts. Clear photographs of the handles, door edge and any visible markings can help with initial identification. Do not remove a locked mechanism or force the handle to obtain those details.
Will adjusting the door stop the lock from failing again?+
Correct alignment reduces avoidable strain, but it cannot reverse wear already present inside the mechanism. The repair should include testing each locking point against its keep and checking that the handle moves freely with the door closed. Any worn or damaged component found during that process may also need replacement.
Get your uPVC door locking properly again
Tell Norwich locksmiths what the key, handle and door are doing. We will assess the likely fault, explain the repair options and confirm the work needed before proceeding.