Multipoint Lock Not Locking? We Diagnose Before Replacing Anything in Coventry

How a multipoint lock works

Lift the handle on a UPVC or composite door and you are driving a gearbox set in the door's edge, which pushes rods to throw hooks, rollers or deadbolts into keeps set into the frame. Three systems have to agree: the door's position on its hinges, the position of the keeps, and the condition of the gearbox and its moving parts. When a multipoint lock stops working, any of the three can be the cause — which is why the lock itself is the last thing we blame, not the first.

Why most "failed" locks are alignment problems

The classic symptoms: the handle lifts but the key will not turn, you have to slam and shove the door, or the mechanism only engages if someone lifts the door by the handle while turning the key. Nearly always the door has dropped slightly on its hinges or the frame has shifted with the seasons, so the hooks and rollers are meeting keeps that are a couple of millimetres out. The mechanism strains every time it is forced, and eventually something genuinely breaks — usually a part that a timely adjustment would have saved for a fraction of the cost.

Working through it in order

We diagnose in sequence. First alignment: how far the door sits out of square against the frame, hinge wear, and whether the keeps need moving or replacing. Next the hardware: the handle springs, the spindle, and whether the handle returns properly after lifting. Only then the gearbox itself: does the mechanism turn smoothly, does the handle spin without engaging, is there grinding or a dead spot in the travel? Realignment and keep adjustment solve a large share of multipoint calls on their own, and we do that work before recommending anything more expensive.

Gearbox faults and parts

When the gearbox has genuinely failed — a limp handle, a handle that spins without engaging, a mechanism frozen mid-throw — replacement is often possible, and here parts condition and availability matter more than anything else. Multipoint gearboxes are made by a handful of manufacturers and fitted into dozens of door brands; the make and model stamped on the lock's faceplate decides whether an exact replacement exists or a compatible alternative has to be adapted to the door. Discontinued units can mean a longer search or a conversion to a different system, and we explain the options and costs before ordering anything. We do not guess a gearbox model from a photo and call it compatible.

Limits and honesty

A multipoint lock that is not throwing means the door is not properly secured, and we will say so and prioritise getting the door to lock within the visit. We are equally direct about what a repair cannot do: if the door slab itself has twisted beyond what hinges and keeps can compensate for, adjustment is a stopgap and a new door or door set is the real answer. We will tell you that rather than chase the door with adjustments forever.

Caring for the mechanism

Always lift the handle fully before turning the key, never slam the door into the frame, and lubricate the moving parts lightly once or twice a year following the manufacturer's guidance. If the door starts needing a shove again, call before it breaks — realignment is a small job; a new gearbox is not.

Booking

We cover the West Midlands. Same-day appointments may be available depending on when you call, which matters when the fault leaves your door unsecured. A booking fee is paid when you reserve; the hourly labour rate depends on how soon you need us, and the full cost is quoted and approved by you before work starts. Any replacement gearbox, keeps or hardware is identified and quoted separately, and you approve it before it is ordered.