uPVC Door Lock Repairs & Window Lock Specialists

uPVC Door Lock Problems We Fix

From a door that has gradually become harder to lock to a mechanism that has suddenly failed, our locksmiths repair a wide range of uPVC door lock problems. We aim to repair the existing mechanism where possible, replacing individual components only when necessary.

Door Won’t Lock or Is Misaligned

If your uPVC door won’t lock, the handle is difficult to lift, or the locking points don’t line up correctly, the door may have become misaligned. Everyday use, building movement and changes in temperature can cause a door to drop or shift slightly. This can put additional strain on the multipoint locking mechanism and eventually prevent the door from locking correctly.

A professional locksmith can check the alignment, adjust the door and inspect the locking mechanism for signs of damage. Correcting the alignment early can often prevent further damage and avoid the need for a more expensive replacement.

Handle Won’t Lift, or Lifts but Won’t Turn

If you can’t lift the handle fully, or the handle lifts but won’t operate the lock, there may be a problem with the door alignment, internal mechanism or gearbox. Don’t force the handle. Applying excessive pressure can damage the locking strip or gearbox and turn a relatively straightforward repair into a more extensive one. Our locksmiths can determine whether the issue can be resolved through adjustment or whether a faulty component needs repairing or replacing.

Key Won’t Turn in Lock

A key that won’t turn can have several causes, including a misaligned door, a worn or damaged euro cylinder, or a fault within the internal locking mechanism. If the key is difficult to turn, avoid repeatedly forcing it. This could damage the key or cylinder and potentially leave you unable to unlock the door.  A locksmith can inspect the cylinder and locking mechanism to identify the underlying problem and replace the affected component where necessary.

Multipoint Lock or Gearbox Failure

uPVC doors commonly use multipoint locking systems, which secure the door at several points around the frame. The gearbox controls the movement of these locking points and can wear or fail over time. Signs of a gearbox or multipoint lock problem can include:

• The handle feels unusually stiff or loose.
• The handle moves but the locking points do not.
• The key turns but the door does not lock.
• The door suddenly becomes difficult to open or close.
• The locking mechanism is jammed.

Depending on the fault and the condition of the existing system, we may be able to replace the gearbox or individual locking components rather than the entire door lock.

Door Won’t Lock in Hot or Cold

If your uPVC door becomes difficult to lock during particularly hot or cold weather, thermal expansion or contraction could be affecting its alignment. uPVC and the surrounding materials can expand or contract as temperatures change. Even a small amount of movement can affect how the door sits within its frame, making the locking points harder to engage. In many cases, adjusting the door and realigning the locking points can resolve the problem. If the mechanism itself has been damaged or worn, a replacement component may also be required.

Patio, Sliding and Composite Door Locks

We also repair locking problems on uPVC patio doors, sliding doors and composite doors. These doors can use different locking mechanisms from standard uPVC entrance doors, so the correct replacement part needs to be identified before work begins. Our locksmiths can assess the existing mechanism and advise whether adjustment, repair or replacement is the most suitable option.

uPVC Window Lock Repairs

We also provide uPVC window lock repairs and replacements. Although window lock problems are generally smaller than door lock failures, a broken or faulty window lock can still affect the security of your property.

Broken or Seized Window Handles

A broken, loose or seized uPVC window handle can prevent the window from opening, closing or locking correctly. We can inspect the handle and surrounding mechanism and replace worn or damaged components where required.

Window Won’t Lock or Won’t Stay Shut

If your uPVC window won’t lock or keeps coming open, the problem could be caused by misalignment, a worn locking mechanism or a faulty handle. Our locksmiths can identify the cause and carry out the necessary adjustment or repair to restore the window’s security.

Espagnolette and Window Gearbox Replacement

Many uPVC windows use espagnolette locking systems. If the mechanism or gearbox has failed, replacing the affected component can restore the window without necessarily requiring a completely new window. We can identify the existing mechanism and source a suitable replacement where required.

Window Restrictors and Child Safety Locks

We can also repair or replace window restrictors and child safety locks where these have become damaged or stopped working correctly. When arranging a window repair, let us know which floor the window is on. This helps us plan the job safely and take any relevant access requirements into account.

What It Costs to Repair a uPVC Lock

The cost of repairing a uPVC door or window lock depends on the type of fault, the parts required and the time of the appointment. A simple adjustment can cost considerably less than replacing a complete multipoint locking mechanism.

These figures are intended as a guide. The final price depends on the fault found and the parts needed for your door or window.

If the required part isn’t available on the locksmith’s vehicle, this may also affect the total cost and the time needed to complete the repair.

For more information, see our pricing guide.

What NOT to Do When Your uPVC Door Won’t Lock

If your uPVC door suddenly stops locking, there are a few things you should avoid doing:

• Don’t force the handle. Excessive pressure can damage the gearbox, handles or multipoint mechanism.
• Don’t keep turning the key. If the cylinder or mechanism is faulty, forcing the key could cause further damage or leave the key stuck.
• Don’t repeatedly slam the door. This won’t correct a misalignment and can put additional strain on the locking mechanism.
• Don’t dismantle the mechanism without knowing the lock type. Removing components incorrectly can make the fault worse.
• Don’t leave the property unsecured. If the door cannot lock properly, arrange a professional repair as soon as possible.

Why Choose Keytek for uPVC Lock Issues?

Our locksmith engineers are trained and accredited to work on uPVC door and window locking systems. We work with a wide range of commonly fitted lock brands like, Yale, ERA, Avocet, Winkhaus, GU, Fuhr, Mila, Maco, Roto. Where a required part isn’t available on the locksmith’s vehicle, we can source parts within 24–48 hours, subject to availability. If a replacement part is required but cannot be fitted immediately, we can take steps to secure the property while the correct part is obtained.

Our uPVC lock repairs also come with a 12-month warranty on fitted parts, and replacement locks are selected to match or exceed the existing security rating where appropriate.

Get Your uPVC Lock Fixed Today

Need help with a uPVC door or window that won’t lock properly? Contact us today for professional uPVC lock repairs and replacements. Our locksmiths can diagnose the problem, explain the repair options and work to restore your door or window to a secure, working condition.

Call us or complete the call back form to request assistance