📞 01233 349 201 ✉ steve@invictalockandkey.co.uk
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Common Problems

If your uPVC door does any of this — we can fix it.

uPVC doors fail in predictable ways. After 8–15 years, the moving parts start to wear out. The good news: it's almost always a part inside the door, not the whole door, and almost always fixable in a single visit.

  • Handle Won't Lift to Lock Usually a worn multipoint mechanism or a misaligned door. We replace the gearbox or realign the door so the handle lifts smoothly again.
  • Door Drops or Sticks Hinges sag over time, especially on heavy composite doors. We adjust or replace the hinges and re-square the door in the frame.
  • Key Hard to Turn or Won't Turn Worn cylinder, misaligned mechanism, or a failing keep. We diagnose the actual cause rather than just replacing the cylinder.
  • Multipoint Locking Mechanism Failure The full-length mechanism that hooks and bolts the door shut. We carry replacements for all common brands — Yale, ERA, Mila, Avocet, Fuhr.
  • Snapped or Seized Cylinder Replaced same-day with anti-snap, anti-pick, anti-bump 3-star cylinders that meet TS007 standard.
  • Draughts & Poor Seal Gaskets, weather seals, and threshold strips replaced. A surprising amount of heating bills walk out of poorly-sealed uPVC doors.
The Honest Truth

We fix doors. We don't sell new ones.

Window companies have a financial incentive to tell you the whole door needs replacing. We don't sell doors — we fix the mechanisms inside them — so we have no reason to recommend anything more than what's actually needed.

Most jobs are completed in a single visit, with parts in the van, for less than £200 all in. The exception is if the entire mechanism has failed catastrophically, in which case we'll quote you fairly and order the part.

  • Same-Day Diagnosis We tell you what's actually wrong with it on the first visit, in plain English, with a fixed quote.
  • Stocked Parts in the Van Common gearboxes, hinges, cylinders, and handles carried as standard. Most jobs done on the day.
  • All Major Brands Yale, ERA, Mila, Avocet, Fuhr, GU, Winkhaus, Maco, Roto — we know the differences and stock the right part.
  • 12-Month Parts Warranty Every part we fit is guaranteed for a full year. If it fails, we come back free of charge.
Common Questions

uPVC door repair
FAQ

In the vast majority of cases, your door can be repaired. Most uPVC door problems are caused by a worn mechanism, hinge, or cylinder inside the door — not the door itself. Window companies have a financial incentive to sell you a new door. We don't sell doors, so we'll always tell you honestly whether a repair is possible.

Most repairs are completed in a single visit for less than £200 including parts and labour. We quote a fixed price before we start and there are no hidden extras. A new door would typically cost £800–£2000+, so repair is almost always the more sensible option.

This is usually caused by a worn multipoint gearbox mechanism or a misaligned door. It's one of the most common uPVC door faults and is almost always repairable. We carry replacement gearboxes for all major brands in the van.

We carry parts for Yale, ERA, Mila, Avocet, Fuhr, GU, Winkhaus, Maco, and Roto as standard. If your door uses a less common mechanism, we can usually source the part within 24–48 hours.

Yes. Every part we fit comes with a 12-month warranty. If it fails within that period, we come back and fix it free of charge.

Door playing up? Send us a photo.