WHAT A MULTIPOINT DOOR LOCK IS (IN PLAIN ENGLISH)
A multipoint locking system uses one handle and one key to secure the door at several points along the edge. When you lift the handle, hooks, bolts or rollers slide into the frame. Turn the key and the system deadlocks. The long metal strip you see on the door edge houses the mechanism.
The gearbox sits behind the handle and drives the hooks and bolts. The cylinder is where the key goes and it controls the gearbox. The keeps are the metal plates on the frame the hooks slot into. This setup gives better security, smoother closing and tighter seals that reduce draughts. We repair uPVC, composite, aluminium and patio doors across most makes and ages. For a deeper look at how different mechanisms work, see locking mechanisms.
QUICK SYMPTOMS CHECKLIST: IS YOUR MULTIPOINT LOCK FAILING?
Spotting issues early keeps costs down and avoids a jammed door. Look for these common signs:
- Stiff handle when you lift to lock, or grinding noises
- Key hard to turn, or turns freely but nothing engages
- Door needs lifting, pushing or pulling to latch
- Handle feels floppy, spins, or sags
- Shiny scrape marks on the keeps where parts rub
- Door stuck shut or only opens with a struggle
These often point to simple misalignment, a worn gearbox, a tired cylinder, or loose hinges—issues we fix daily with uPVC door lock repair and composite door lock adjustments. If the door is jammed, do not force the key or handle. That can snap the cylinder or strip cogs in the gearbox. Book a quick check via door lock repairs replacements or browse quick answers in our frequently asked questions.
PARTS EXPLAINED IN PLAIN ENGLISH: GEARBOX, CYLINDER AND KEEPS
Gearbox: the engine behind the handle. It converts the lift of the handle into movement in the hooks and bolts. With age, internal parts wear, crack or lose teeth. Symptoms include a floppy handle, a handle that won’t lift fully, or a key that rotates but doesn’t retract the latch.
Cylinder: the Euro profile barrel you put the key into. It engages the gearbox when you turn the key. Basic cylinders are easier to snap or pick; upgrading to an anti‑snap/anti‑drill type quickly improves security. If the key sticks or spins too freely, the cylinder is likely tired.
Keeps: the metal plates on the frame that receive the hooks and bolts. If the door drops or swells, the keeps no longer line up. Locking becomes hard and seals stop compressing. Most faults come from one part failing or from alignment drift. We carry common gearboxes and quality anti‑snap cylinders for same‑day fixes. For more mechanism detail, see locking mechanisms.
This image was generated with AI and may not always represent the product or service exactly.
COMMON FAULTS WE FIX WITHOUT REPLACING THE DOOR
Worn or broken gearbox: the handle goes floppy, or the key turns but nothing retracts. The cure is a like‑for‑like gearbox replacement and a fresh setup. It is a neat, targeted repair that restores smooth locking without touching the door or frame.
Misaligned door or keeps: hinges can settle and seasonal movement is normal. We adjust hinges and keeps so the hooks line up cleanly. That reduces strain on the mechanism and cures draughts. Weak, damaged or snapped cylinder: we replace with a high‑security anti‑snap cylinder to lift security straight away. These focused repairs are faster and cheaper than a new door and bring back both security and ease of use.
REPAIR OPTIONS AND TYPICAL COSTS VS REPLACING THE DOOR
Adjustment and servicing: hinge and keep alignment, plus clean and lube, often £65–£120. Cylinder upgrade/replacement: standard to anti‑snap cylinder typically £70–£150 supplied and fitted. Gearbox replacement: commonly £120–£220 depending on brand and availability. Full lock strip replacement (if needed): roughly £180–£300.
By contrast, a new front door with fitting is often £1,200–£2,500+. Most customers only need a focused repair. Replacement makes sense when the sash or frame is badly warped, cracked or structurally failing. For balanced guidance on when to repair or replace, see repair vs replacement.
SECURITY, COMFORT AND LIFESPAN GAINS AFTER A PROPER FIX
Upgrading to an anti‑snap, anti‑drill cylinder raises security immediately. Correct alignment means the handle lifts easily, the gearbox is under less strain, and parts last longer. You feel the difference every time you lock up.
Set correctly, keeps compress the seals, cutting cold air and rattles. That improves comfort and helps your heating work more efficiently. A clean, lubricated mechanism resists sticking and corrosion. For comfort tips, see why is cold air coming through my double glazed windows. We also offer door alignment and draught‑proofing alongside door lock repairs.
OUR ON‑SITE DIAGNOSIS: QUICK, TIDY AND NON‑DESTRUCTIVE
We start with simple checks: handle feel, key action, latch and deadbolt throw, keep positions, sash drop and seal compression. If the door is stuck closed, we use non‑destructive opening methods to avoid damage. We identify the fault—gearbox, cylinder, alignment or handle—and give a clear price before work starts.
We carry common gearboxes, cylinders and handles to complete most jobs in one visit. Work is tidy, parts are reliable, and you get a sensible warranty. Landlords and agents get fast response and clear reporting for tenanted properties. To discuss a visit, please contact us.
This image was generated with AI and may not always represent the product or service exactly.
DOOR TYPES AND BRANDS WE REPAIR EVERY DAY
We work on most multipoint formats: hooks, bolts, rollers and deadbolts across uPVC, composite, aluminium and timber‑core doors. We also handle patio sliders and bifolds, where alignment and lock interaction differ from standard front doors.
Even with older or discontinued patterns we can usually source an exact or compatible replacement, or adapt a modern equivalent without changing the door. We identify the profile on arrival and advise the most practical fix. If you are unsure what you have, a quick photo of the door edge usually tells us.
SIMPLE MAINTENANCE TO AVOID FUTURE LOCK PROBLEMS
Keep it clean. Wipe the lock edge and keeps, and clear debris from drainage slots. Use a light PTFE or silicone‑based spray on moving parts a couple of times a year. Avoid thick oil—it attracts dirt and gums up the gearbox.
Do not slam the door or yank the handle if it feels tight. That is how cylinders snap and teeth strip. Seasonal movement is normal; a quick hinge or keep tweak keeps the mechanism easy to operate and seals effective. An annual service is wise for busy family homes and rentals.
GET A FAST QUOTE: WHAT WE NEED AND WHERE WE WORK
Send a quick photo of the door edge showing the lock strip, a shot of the inside handle, and any markings on the faceplate or cylinder. Tell us the symptoms (for example, “handle lifts but won’t lock” or “door stuck closed”). Many repairs are done in one visit, often same‑day or next‑day.
We cover homes and landlords across Essex and Suffolk. Check our areas we cover and contact us for a fast appointment. If you are comparing options or need more detail, see door lock repairs replacements.
FAQs
How do I know if I need a new gearbox or just an adjustment?
If the handle is stiff only at the end of the lift, it is often misalignment. If the handle goes floppy or the key turns but nothing moves, the gearbox is likely worn and needs replacing.
Can you open a door that is locked shut without damage?
Yes. We use non‑destructive methods to open the door and preserve the frame and sash. We then repair or replace the faulty part and re‑align the door.
Will a new cylinder fit my existing keys?
Replacing the cylinder means a new set of keys. We can supply multiple keys and, if needed, key‑alike cylinders so one key works several doors.
How long does a multipoint lock repair take?
Most adjustments take 30–60 minutes. Cylinder or gearbox replacements are usually 45–90 minutes if parts are on the van, which is common.
Do you work on composite and aluminium doors?
Yes, every day. We handle uPVC, composite, aluminium and timber‑core doors, including patio sliders and bifolds.
Will a proper alignment help with draughts?
Yes. Correctly set keeps compress the seals so the door closes tighter. That reduces cold air and improves comfort.
What areas do you cover?
We serve Essex and Suffolk with rapid call‑outs. See our areas we cover for details.
