Common Door, Lock & Window Faults — And How We Fix Them
Nottingham · Derby · Mansfield · Ilkeston · Long Eaton · Beeston · Hucknall · Loughborough
Something stopped working on your door, lock or window? Here is what is actually going wrong — and how a real local locksmith puts it right, usually without replacing more than it needs.
Most Lock Problems Are Not Lock Problems
Before you replace anything, it helps to know how a locksmith actually works out what is wrong.
Two questions that help point to the cause of most door faults
1. Does it happen with the door open, or only when it is shut? If it only plays up when closed, the door has often dropped and the locking points are catching the frame — which points towards alignment rather than a broken lock.
2. Does the key still turn and the latch still move? If the key turns fine but the door still will not open, it is usually the mechanism inside the door or the handle — though in rarer cases the cylinder itself can still be the cause.
These are a starting point, not a final diagnosis. Sometimes what looks like a simple alignment issue turns out to be a worn mechanism, and the only way to know for sure is to get eyes on it. Either way, we tell you straight what it needs — and what it does not.
uPVC Door Faults
uPVC door won’t lock
The door has usually dropped so the hooks miss the keeps, or the mechanism has worn. Often an adjustment, sometimes a new mechanism.
Door lock repair →Handle won’t lift up to lock
Won’t lift with the door open? It is the handle or the mechanism. Only when it is shut? The door has dropped and the hooks are catching.
Door lock repair →Door dropped or catching on the frame
The slab has sunk on its hinges and rubs the frame or will not latch. A hinge and keep adjustment brings it back into line.
Door repair →Euro cylinder snapped
A standard cylinder snaps at the centre, sometimes during a break-in attempt. We fit BSI Kitemark anti-snap cylinders — 1 Star or 3 Star — one of the biggest security upgrades you can make.
Lock replacement →Key won’t turn in the lock
A worn cylinder, a failed cam, or a tired key. We work out which and usually fix it without damaging the door.
Door lock repair →uPVC door won’t open
The hooks or latch are not retracting, usually a failed mechanism. Do not force it; we open these non-destructively.
Locked out →Composite Door Faults
Composite door dropped or sticking
The slab is heavier than uPVC so the flag hinges wear faster. A hinge adjustment restores easy locking.
Door repair →Composite door won’t lock
Same locking hardware as uPVC, so it is usually alignment or a worn mechanism. We diagnose and put it right.
Door lock repair →Sticks in summer, fine in winter
Composite doors shift slightly with temperature. A seasonal hinge adjustment keeps it locking smoothly year-round.
Door repair →Handle loose or floppy
A floppy handle with the door open is a worn spring inside the handle; loose when shut is usually fixings or a worn spindle.
Door repair →Patio, Sliding & Bifold Door Faults
Patio door won’t lock
The hook bolts are not engaging the keeps: a worn lock, a dropped door, or a failed handle. We replace the lock and realign.
Door lock repair →Sliding door hard to slide or off track
Worn rollers or a damaged track. We replace the rollers, clean up the track and re-level the panel.
Door repair →Bifold won’t lock or align
As the panels sag the shootbolts drop out of line. We realign the panels and adjust the locking points.
Door repair →Heavy or custom sliding doors
Big, wide units that need a full strip-down and rebuild, the kind of job that takes more than one pair of hands. We do these.
Door repair →Wooden & Timber Door Faults
Mortice lock won’t turn
Worn levers, internal debris or a tired key. We service it or fit a BS3621 mortice lock, the insurer standard for timber doors.
Lock replacement →Night latch or Yale lock failure
A worn latch, a broken spring or a misaligned keep. We replace the night latch and realign the staple.
Lock replacement →Timber door swollen or sticking
Real timber absorbs moisture and expands. We ease and adjust the door and hardware so it closes and locks again.
Door repair →Key snapped in a mortice lock
We extract the broken key non-destructively and cut a replacement or fit a new lock the same visit.
Locked out →Lock, Cylinder & Security Faults
Worried about lock snapping
Standard euro cylinders snap under leverage. A BSI Kitemark anti-snap cylinder (1 Star or 3 Star) is the single best upgrade against forced entry.
Security check →Key stuck in the lock
Usually a worn cylinder cam or a tired key. Do not force it, that is how keys snap. We remove it non-destructively and replace the cylinder if needed.
Locked out →Multipoint mechanism failed
The strip of hooks and bolts down the door edge has worn or seized. We identify the exact mechanism and replace it.
Door lock repair →Want your locks more secure
Anti-snap, anti-bump and anti-pick cylinders to British Standard. We check what you have and upgrade the weak points.
Additional security →Window Faults
Window won’t lock or handle won’t turn
The espagnolette mechanism or handle has failed, or the sash has dropped so the cams miss the keeps. We replace and realign.
Window repairs →Window won’t stay open
The friction stays (the hinges) are worn out. Replacing them restores the hold and lets the window lock properly again.
Window repairs →Window handle broken or snapped
We replace the handle and spindle, matched to your lock type, so it operates smoothly again.
Window repairs →Locked Out & Emergencies
Locked out of your house
Non-destructive entry is the default. We get you in without damaging the door, then sort whatever caused it.
Locked out →Lost or stolen keys
We change or re-pin the locks so the old keys will not work and you have sole control again.
Locked out →Snapped key or snapped cylinder
Broken-key extraction and same-visit cylinder replacement, day or night, with no call-out fee.
Emergency locksmith →Door & Lock Fault Questions
The questions we get asked most when something stops working.
Why won’t my uPVC door lock?
Why won’t my door handle lift up to lock?
My uPVC door won’t open even though it is unlocked — what is wrong?
Why has my euro cylinder snapped?
My key won’t turn — is it the lock or the key?
Why is my key stuck in the lock?
My key snapped off in the door — what now?
Why does my uPVC door get stiff to lock in hot or cold weather?
Why is my door handle floppy or loose?
Why won’t my patio or sliding door lock?
Why won’t my window handle turn to lock?
What is the most secure lock for my door?
Can you get me in without breaking the door?
Do you charge a call-out fee?
Door Lock Repair Across Nottingham, Derby, Mansfield & Surrounding Areas
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Door Lock Repair — Nottingham, Derby & Mansfield
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