When a uPVC door is not locking
A uPVC door not locking properly usually shows one of three patterns: the handle will not lift, the key will not turn, or the door only locks if you pull or push it into position. Each points to a different cause. A handle that will not lift often means the gearbox inside the mechanism has failed; a door that only locks when lifted usually means the door has dropped and the locking points no longer line up with their keeps.
Our guide to uPVC door not locking properly walks through these symptoms in more detail. If the door cannot be secured at all, treat that as an immediate security concern and seek appropriate help rather than leaving it unattended.
Dropped doors and uPVC door adjustment
A uPVC door dropped on its hinges is one of the most common faults. The leading edge rubs the threshold, the latch misses its keep and the lock becomes stiff. uPVC door adjustment at the hinges can correct the position, but only where the hinges and fixings are still sound; adjustment cannot compensate for worn hinges forever.
The guide to sticking doors and dropped hinges explains the warning signs. Note when the problem started and whether it changes with the weather, because that helps distinguish hinge wear from frame movement.
Multi-point lock and mechanism replacement
Most uPVC doors use a multi-point locking system: a strip running the height of the door with hooks, rollers or bolts that engage when you lift the handle. uPVC door mechanism replacement means matching the gearbox, the backset and the locking points to the existing strip, which is why the door needs to be examined rather than quoted blind.
uPVC door lock replacement can also involve the cylinder, the handles or the keeps on the frame. A patio door that will not lock has its own arrangement of hooks and keeps, and the same principle applies: identify which part has failed before choosing parts. A written scope should name the components being changed so you know exactly what the repair includes.
What affects the cost of a door lock repair
Door lock repair cost depends on which part has failed, whether compatible parts are available for the door's mechanism and how much of the locking strip is affected. A cylinder change is a different job from a full mechanism replacement, and a door that needs both hinge work and a gearbox will be scoped accordingly.
Fairway Window Systems Ltd provides a free home survey and a written quote, so the figure reflects the actual fault rather than a guess. Where a repair would only postpone a broader failure, we will say so and you can compare the repair scope against the replacement uPVC door range on a fair basis.
Preparing for a repair assessment
Before the survey, note which door is affected, what the handle and key do, and whether the door moves freely on its hinges. Photographs of the lock edge with the door open are useful. Do not try to dismantle the mechanism or force the handle, as broken parts inside the strip can make the assessment harder.
For faults that span windows as well as doors, our window and door repairs page explains the wider approach, and window handle and hinge repairs covers the window side specifically.
Frequently asked questions
My uPVC door won't lock unless I lift it — what is wrong?
That usually means the door has dropped and the locking points no longer meet their keeps. Hinge adjustment may correct it if the hinges are sound; otherwise the worn parts need replacing. An assessment confirms which.
Can a multi-point lock be replaced without a new door?
Often yes, where a compatible mechanism is available for the existing door. The gearbox, backset and locking points all have to match, so the door is examined before parts are chosen.
Is a stiff handle a security risk?
A stiff handle can mean the mechanism is under strain, and forcing it can break the gearbox, leaving the door unable to lock. If the door cannot be secured, treat it as an immediate security concern and seek help.
How much does uPVC door lock repair cost?
It depends on the failed part, parts availability and the extent of the work. A written quote after a free home survey gives you the figure for your actual door rather than a generic estimate.