uPVC Door Lock Replacement in Newcastle

Plenty of locking problems are really alignment problems. A door that has dropped forces the hooks and rollers to fight against the keeps, so the handle feels stiff and the key is hard to turn. Those cases are covered on our uPVC door repairs page, where lifting the leaf and resetting keeps is often the whole job.

Replacement comes in when a part has physically failed. A handle that falls limp, a key that turns freely and a mechanism that grinds whether the door is open or closed all point to something broken inside. Testing the door while it is open tells us a lot: if it still will not operate with nothing pressing against it, the mechanism is at fault rather than the alignment. Our guide on a uPVC door that will not lock walks through those checks.

A multipoint lock is a long strip running down the edge of the door, with a central gearbox behind the handle that drives hooks, rollers or bolts into the frame at several points. The gearbox is the part that usually gives way, because it takes the strain every time the handle is lifted.

Where the strip is in good condition, the gearbox can often be replaced on its own. Where several parts have worn, the whole strip is changed. Either way the new mechanism has to match the old one's dimensions so it fits the existing door and keeps without cutting the uPVC.

The cylinder is the part your key goes into. Older euro cylinders can be snapped by force, which is why we recommend upgrading to an anti snap, anti pick and anti drill cylinder that meets current standards whenever a cylinder is being replaced.

Cylinders can also be supplied keyed alike, so one key opens the front and back doors. A cylinder change is also the quick answer when keys have been lost or a tenant has moved out.

Sliding patio doors use their own hook locks, and French doors have a master leaf and a slave leaf with shoot bolts at the top and bottom. Both need parts that suit the system rather than a standard front door mechanism. Running faults on sliding doors are explained on our patio door repairs page.

Before a lock is replaced we check the backset, the centres between the handle and the cylinder, the type of locking points and the length of the strip. A handle that has simply snapped is a separate, smaller job, covered in our guide to uPVC door handle replacement.

A lock that fails with the door open, or leaves the house unable to be locked at night, is treated as an emergency. Our emergency repairs service runs a 24 hour call out for insecure properties, and we make the door secure before anything else.

A multipoint lock is a long steel strip running down the edge of the door. In the middle is the gearbox, operated by the handle and key. Lifting the handle throws hooks, rollers or bolts at points above and below into keeps on the frame, pulling the door tight against its seals along its full height.

Failure shows in a few familiar ways. The handle goes floppy and will not lift. The key turns only halfway. The door will only lock when you push or slam it. Or the handle will not go down at all, leaving you stuck outside or locked in. A snapped gearbox can often be replaced on its own; a worn strip with damaged hooks usually means a full multipoint lock replacement.

On doors around Newcastle we commonly find mechanisms from makers such as Winkhaus, ERA, Yale and Fuhr, alongside many others. We identify the existing lock and fit a matching or compatible replacement, so you can change uPVC door locks without changing the door. The same applies to French door lock replacement and bifold door lock repair, where the mechanisms differ but the approach is the same. To strengthen the cylinder too, see anti snap locks, and for all hardware see hinges, locks and handles. Our guides to a uPVC door that will not lock and a key that will not turn help narrow down the fault.

If the handle lifts but nothing locks, the gearbox is the likely culprit; see uPVC door mechanism replacement. For costs, read the uPVC door lock replacement cost guide, or try our DIY guide to replacing a uPVC door lock. Lockouts and snapped keys are covered by our Newcastle locksmith service.

For a composite leaf, see composite door lock replacement. Cylinder, gearbox and keep alignment are checked as separate possible causes of a door not securing.