Planned work · multipoint specialists
uPVC door & window locks — fixed, not replaced wholesale.
Whether yours is a conservatory door, a French door or a double-glazed door, the multipoint mechanism inside is the same one we fix on any uPVC door. Every uPVC door shares the same anatomy: a cylinder, a long multipoint strip, a gearbox in the middle driving it, and keeps on the frame everything has to land in. When one of them is out, the whole door feels broken — but it is one part, and one fixed price.
Payment at completion — never before we start, never chased after.You'll have your price in writing before we set off.
The two-minute symptom check
Sound like your uPVC door?
uPVC doors fail in predictable ways. Every symptom below points at one specific part — which is why nobody should be quoting you for a whole new door.
Quickest diagnosis we offer: WhatsApp us a video of you lifting the handle — we can usually name the failed part from the sound alone.
WhatsApp a photo or video (opens WhatsApp)- Handle lifts, but the key won't turn. The classic gearbox failure. Stop forcing it — a seized gearbox can lock you out with the door wide shut.
- Only locks if you lift, pull and lean on it. Misalignment — the hooks are missing the keeps. A realignment, and the fix for most "broken" uPVC doors we see.
- Fine all winter, jams every summer — or the reverse. uPVC grows and shrinks with the seasons. The cure is a realignment set with seasonal tolerance, not another squirt of WD-40.
- Window handle spins or won't lock. A worn espagnolette mechanism or handle gearing — small parts, a quick swap, and your insurer expects windows to actually lock.
Is it the gearbox, or the keeps?
Nine out of ten "uPVC door won't lock" calls come down to one of two faults — and they cost very different amounts. Here is how to tell them apart from your side of the door, so nobody can sell you the dear one when you have the cheap one.
It's the keeps (alignment) if…
- The door locks fine when you lift the handle while pulling or pushing the door towards the frame
- It is worse in hot or cold spells, or started after the door dropped on its hinges
- With the door OPEN, the handle lifts and the key turns sweetly
- You can see rub marks or shiny scrapes on the frame keeps
The fix: realign and adjust — one fixed price, no parts needed. Hinges, keeps and door height reset so it locks with two fingers.
It's the gearbox if…
- The handle lifts but the key will not turn — or the handle suddenly flops with no resistance at all
- It behaves exactly the same with the door OPEN — so the frame cannot be the problem
- You heard a crunch or a click one day, and it has never been right since
- The key turns but the hooks and bolts do not move
The fix: gearbox replacement — the part named, priced and approved before we fit it. The rest of the strip usually survives; we replace the failed gearbox, not the door.
The open-door test is the one that matters: same fault with the door open means the mechanism; fault disappears with the door open means alignment. Try it before anyone quotes you for a new door.
Honest options, fixed first
uPVC repairs, priced before we start.
Realign & adjust
- Day · 8am–6pm
- from £95
- Evening · 6pm–midnight
- from £115
- Hinges, keeps and door height reset so it locks with two fingers
- Set with seasonal tolerance, so summer does not undo it
- No parts needed — done and tested in one visit
Best when: the door locks if you lift, pull and lean.
Gearbox replacement
- Day · 8am–6pm
- from £115· the part is named, priced and approved before we fit it
- Evening · 6pm–midnight
- from £135
- The failed gearbox swapped, the surviving strip kept
- Pattern-part equivalents checked first for older and discontinued mechanisms
- Cycled locked-and-unlocked with you watching before we leave
Best when: the fault is identical with the door open — the mechanism, not the frame.
Window locks & espags
- Day · 8am–6pm
- from £99· the mechanism or handle is named and priced before we fit it
- Evening · 6pm–midnight
- from £119
- Worn espagnolette mechanisms and window handles swapped
- Matching handles sourced where the originals are discontinued
- Locking windows checked against your insurance wording
Best when: a window handle spins, sticks or will not lock.
Round numbers, total price — no VAT added — fixed in your quote before we start. You'll have your price in writing before we set off. See the full price list →
Older door? Parts are our problem, not yours
Plenty of "obsolete" multipoint mechanisms have modern pattern-part equivalents, and we check those suppliers before quoting anything bigger. If a part genuinely no longer exists, we say so straight and quote the honest alternative — you are never paying us to hunt for a part that is not there.
No surprises
How a uPVC repair actually goes
Diagnose
Open-door test, handle feel, a look at the strip — or send a WhatsApp video first; it is often enough. No pressure, no obligation.
Name the fault
Gearbox, keeps, hinges or cylinder — we show you the failed part and explain it in plain English.
Fixed quote
One all-in figure with any parts named and priced. You approve it before any work starts — or you pay nothing.
Repair & test
Most realignments take under an hour; gearbox swaps a little longer. We cycle the door locked and unlocked with you watching.
Pay at completion
Card, bank transfer or payment link once the door locks with two fingers — never before we start.
On every visit
What's always included.
- A fixed quote agreed before any work starts — parts named and priced first
- The open-door diagnosis explained, so you can see the fault yourself
- Realignments set with seasonal tolerance, not just "works today"
- The door cycled locked-and-unlocked with you watching before we leave
- Payment at completion — card, bank transfer or payment link
Asked every week
Honest answers, before you call.
Do I need a whole new door?
Almost never for a locking fault. The cylinder, the gearbox, the strip and the keeps are all replaceable parts — a door that won't lock is usually one failed component, not a failed door. If the door itself is genuinely past saving, we say so straight, and you can plan a replacement in your own time instead of under pressure.
My door only locks when I lift and pull it — why?
That's misalignment: the hooks are missing the keeps on the frame, usually because the door has dropped on its hinges or the frame has moved with the seasons. Try the open-door test — if the handle lifts sweetly with the door open, the mechanism is fine and a realignment fixes it. No parts needed.
Can you get parts for an older door?
Usually, yes. Multipoint gearboxes look bespoke but most follow standard patterns, and pattern-part suppliers cover many discontinued models. We measure yours, check the suppliers first, and quote the part by name before fitting anything. If nothing genuinely exists any more, we tell you straight and quote the honest alternative.
Why does it always happen in a heatwave or a cold snap?
uPVC expands in heat and contracts in cold — a door can grow or shrink millimetres across a season, which is plenty to throw the hooks out of their keeps. When we realign a door we set it with seasonal tolerance, not just "works today", so it still locks in August and January. That's also what the 12-month workmanship guarantee is for: if it drifts out inside the year, we come back.
Is the lock cylinder itself secure?
Worth checking while the door is being looked at: many older uPVC doors still carry a builder-grade cylinder that snaps in seconds — and snapping is the most common way through a uPVC door. We'll show you what your door has and quote an anti-snap upgrade alongside the repair, both numbers separate, no pressure to take either.
Read first, if you'd rather
Guides that answer this properly.
Find out exactly what it costs — before anyone visits.
Describe the door, or WhatsApp a photo — we name the fix and the fixed price first.
- No call-out fee — when you accept the quoted work
- Payment at completion — never before we start, never chased after.
- 12-month workmanship guarantee (terms apply)