UPVC & composite door specialists

UPVC Door Lock Repair in Glasgow

Door sticking, dropped or won't lock? UPVC and composite doors are our specialism. We realign doors, replace failed multipoint gearboxes and upgrade cylinders to snap-safe.

UPVC door won't lock? Call 07590 573733.

Old and new UPVC multipoint gearbox mechanisms held side by side

The service

Get your UPVC door working — and secure — again

UPVC doors are heavy, and over time they can drop out of alignment so the locking points no longer meet the frame. That's when the handle gets stiff, the door is hard to lock, or the multipoint mechanism fails altogether.

We realign and adjust the door so it closes and locks smoothly, and where the gearbox has failed we replace the multipoint mechanism with the correct part.

While we're there, we can upgrade a vulnerable euro cylinder to a snap-safe one — a simple, worthwhile improvement to your door security.

What to expect

  • Dropped doors realigned and adjusted
  • Failed multipoint gearboxes replaced
  • Euro cylinders upgraded to snap-safe
  • Handles, spindles and keeps repaired
  • Common parts carried; door left secure if ordering
  • 12-month guarantee on the parts we fit
LKC Locksmiths van beside a repaired door

Common situations

Typical UPVC door problems

If any of these sound familiar, we can help.

Handle lifts but won't lock

Usually a worn or failed multipoint gearbox — we replace it.

Door has dropped

Realign the door so the locking points meet the frame again.

Stiff or sticking lock

Adjust, service or replace the mechanism for smooth operation.

Key won't turn

Cylinder or gearbox fault diagnosed and repaired.

Draughty or misaligned

Adjust hinges and keeps for a better seal and secure lock.

Want better security

Upgrade to snap-safe anti-snap euro cylinders.

FAQ

UPVC door repair FAQs

Can't see your question? Give us a call — we're happy to help.

Most commonly it's a failed multipoint gearbox or a door that has dropped out of alignment. We can diagnose it on site and repair or replace the faulty part.
Rarely. In most cases the mechanism or cylinder can be repaired or replaced far more cheaply than fitting a new door.
An anti-snap euro cylinder resists lock snapping, a common way UPVC doors are forced. Upgrading is a quick, cost-effective security improvement.
Yes — the branded parts we fit come with a 12-month guarantee. If a part needs ordering, we leave your door secure in the meantime.

Need a locksmith in Glasgow? We're ready.

UPVC door playing up? Call for a proper diagnosis and a fair, guaranteed repair.

Open 24 hours, 7 days a week · Glasgow & Central Scotland

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