A multipoint door rarely fails all at once. There are usually warning signs first:
The handle is stiff, or you have to lift it hard to throw the bolts.
The key will not turn, or the cylinder turns without locking the door.
The handle has dropped, gone floppy, or lost its spring.
You can operate the handle but the hooks or bolts do not come out.
The door will not lock, will not stay locked, or the bolts miss the keeps.
Most of these point to a worn gearbox or a door that has fallen out of alignment. Catching it early is far cheaper than waiting for the lock to jam completely and leave you locked out. If your door is not locking properly, a multipoint fault is very often the cause. Call us on 07309909989 and we will diagnose it on site.
A multipoint locking system is built around a central gearbox (the centre case) that sits on the edge of the door. Lifting the handle drives the locking points out along the strip and into the frame, and turning the key in the key cylinder then deadlocks everything in place. One smooth operation, several points secured.
The gearbox is operated by the handle spindle and the cylinder, and a split spindle lets the inside handle work without a key for easy exit. The strip runs the length of the door edge, with keeps or a strike plate fixed to the frame so the bolts have something solid to lock into. It is a strong locking system, but the gearbox is the part under the most strain, which is why it is the most common point of failure and the usual reason for a multipoint lock replacement.
The locking points are what make a multipoint lock so secure. Different doors use different combinations, and the mix of points is part of how we identify the right replacement:
Hooks: swing out and grip the keep, resisting the door being jemmied or lifted.
Deadbolts: solid bolts that throw into the frame for straight, strong holding power.
Rollers: adjustable cams that pull the door tight and improve weather resistance on uPVC doors.
Mushrooms and pins: anti-lift points that lock behind the keep.
Because these several points engage along the whole door edge rather than at only one point, a multipoint lock offers superior protection against forced entry compared with a single bolt. The more locking points, and the better they are matched to the frame, the harder the door is to force.
Traditional single-point locks, like a mortice deadlock, secure the door at only one point, usually the centre. They are strong and still the right choice for many period timber doors, but on a modern door a multipoint system is hard to beat. By locking at multiple points at once, multipoint door locks resist forced entry, prying and warping far better than single-point locks, and they keep the door pulled tight for better weather resistance and insulation.
That said, the best door locks for your home depend on the door. We fit and repair both, and we will always advise honestly on what suits your door rather than simply selling the most expensive option. For the full picture on choosing locks, see our guide to high security locks.
Multipoint locks are fitted to uPVC, composite and timber external doors, and the type of door changes which mechanism is used. Matching the lock to the door is essential, so here is how they differ.
uPVC doors usually run a hook-and-roller multipoint lock operated by a euro cylinder, and a worn uPVC door lock mechanism is one of the most common faults we repair. The standard cylinders fitted to them are also the ones most vulnerable to lock snapping, so a replacement is a good moment to upgrade the cylinder too.
Composite doors typically use a hook-and-bolt multipoint lock. These are strong, solid doors, so the weak point is almost always the gearbox or the cylinder rather than the door itself. A worn gearbox on a composite door is one of the most frequent repairs we carry out.
Timber doors use hook-and-bolt multipoint locks, which do not need the air gap a roller lock requires, so they suit most wooden doors. On a period or listed timber door, a traditional mortice lock change is sometimes the better route, and we will advise which is right for your door.
Patio doors and wooden or uPVC French doors use multipoint locks too, often with shoot bolts top and bottom and a master and slave leaf that interlock. A multipoint system on patio doors keeps both leaves pulled firmly together, improves weather resistance, and stops the timber or frame from bowing. These mechanisms take a lot of use, so they are a common candidate for repair or replacement.
Every customer asks whether their multi point lock can be repaired or needs replacing, and the honest answer is that we usually cannot be certain until we see the door. Here is how we decide.
Repair (gearbox replacement). If the strip and locking points are sound and a matching gearbox is available, we can often replace just the centre case. This is the quicker, lower-cost fix and keeps the rest of your mechanism in place.
Replacement. If the strip is worn throughout, damaged, or the lock is an obsolete model with no matching gearbox, a full replacement multipoint lock is the right fix. We identify the correct unit by its backset, the door’s thickness, the faceplate width and the hook, bolt and roller configuration, take precise measurements to ensure compatibility, and fit a like-for-like or upgraded mechanism.
Sometimes the lock is fine and the real problem is alignment: a door that has dropped on its hinges, or timber that has swollen, so the bolts no longer meet the keeps. In that case the fix is adjustment rather than replacement, which we will always do first where we can. Either way, we tell you what you need and what it costs before we start, with no hidden call-out fee.
Not sure whether your multipoint door lock needs repairing or replacing? Our locksmiths will inspect the locking mechanism, identify the cause of the problem and recommend the most suitable solution. Where possible, we aim to repair the existing lock or replace only the faulty component, helping you avoid the cost of a complete multipoint lock replacement.
Call 07309909989There are hundreds of multipoint variants, so finding the right replacement means matching the original lock exactly. We carry and source parts for all the major makes, including Winkhaus, Yale Doormaster, ERA, Avocet, Fullex, Maco, GU, Fuhr and Millenco.
For replacements, a universal unit such as the Millenco Mantis is often an excellent choice. The Millenco Mantis is designed with adjustable rollers, so it takes up gaps and corrects the alignment and binding issues that cause so much wear and tear on a multipoint door. That adjustability makes it a reliable, long-lasting fix across a wide range of doors, and it is one of the replacement locks we fit most. Whatever make you have, you do not need to identify it yourself. Our locksmith will do that on site and make sure the replacement is fully compatible.
Done properly, a multipoint lock is a genuine step up in door security. Several locking points, solid keeps and a sound gearbox give strong protection against forced entry for both homes and commercial properties. A multipoint repair or replacement is also the ideal moment to enhance the rest of the door. We can fit a high security, anti-snap cylinder rated to TS007 3-star or Sold Secure Diamond, so the cylinder matches the strength of the mechanism rather than being the weak link. Add good maintenance and the odd adjustment, and a quality multipoint lock will give you years of reliable, secure operation.
Local: based at 8 Shepherd Market, in the heart of W1.
24-hour: 7 days a week, 365 days a year.
Fast: usually at your location within 30 minutes across Central London.
Fully equipped: mobile locksmiths who carry the parts to fix it on the first visit.
Clear pricing: a free quote before we start, no hidden call-out fee, prices from £59.
We repair and replace multipoint door locks across Central London, including Mayfair, Marylebone, Soho, Covent Garden and St Giles, and the wider Central London area. We also look after offices and retail spaces.
Often, yes. If the strip and locking points are sound and a matching gearbox is available, replacing just the centre case is the quicker, cheaper fix. If the lock is obsolete or worn throughout, a full replacement is better, and we will tell you which applies.
Yes. Timber doors use hook-and-bolt multipoint locks, and patio and French doors use multipoint systems with shoot bolts. On period or listed timber doors a mortice lock is sometimes more appropriate, and we will advise.
The Millenco Mantis is a popular replacement multipoint lock with adjustable rollers, which let it take up gaps and correct alignment problems. That makes it a reliable universal replacement across many door types.
By the backset, the door’s thickness, the faceplate width and the hook, bolt and roller configuration and brand. We take precise measurements on site to ensure compatibility, so you do not need to work it out yourself.
We quote clearly before any work, with no hidden call-out fee and prices from £59. We are based in Mayfair and work 24 hour, so we are usually with you within about 30 minutes across Central London. Call 07309909989.
