uPVC Door Repair in Barnet — Mechanisms, Locks & Handles
Door that won't lock, a handle that lifts but nothing engages, or a multipoint mechanism that's seized — these are the most common calls we get. From £86 plus parts, price confirmed before we start. Open 24 hours.
- From £86 + parts — uPVC door/window lock repair or opening
- Multipoint mechanisms — Full mechanism case replacement from £144
- Same-day across Barnet — Open 24 hours, every day
Problems we solve every day
- Handle lifts but the door won't lock — multipoint mechanism has failed
- Door locked and won't open from inside or outside
- Key turns but nothing moves — gearbox or cam has stripped
- Handle is loose, dropped, or snapped off
- Door won't close flush — has dropped on its hinges
- Draught coming through even when locked — misaligned keeps or seals
- Window lock broken or seized shut
- Mechanism making grinding or clicking noise when operated
What you get
- Full diagnosis on arrival — mechanism, hinges, alignment, and cylinder checked
- Price quoted before any parts are ordered or work begins
- Mechanism replacement if repair isn't viable (same-day where parts are in stock)
- Door alignment and hinge adjustment included if contributing to the fault
- New handles or cylinders supplied and fitted where needed
Flat prices, agreed before we start
| Service | Price | Notes |
|---|---|---|
| uPVC door/window lock repair or opening | £86 + parts | Labour to repair or open a uPVC lock or window catch |
| Multipoint mechanism case (gearbox) | £144 – £594 | Mechanism case only — centre case replacement depending on make and model |
| Full multipoint mechanism replacement | £399 – £1,359 | Complete mechanism strip and replacement, depending on door and security spec |
| UPVC security mechanism (ON-UM-EP) | £449 | Centre case gearbox euro profile replacement |
| Adjustable handle (Versa, most uPVC doors) | £186 – £236 | Supply and fit, compatible with most uPVC door handles |
Prices confirmed on the phone before any work starts. No call-out fee.
What people ask before they book
My uPVC door handle goes up and down but the door won't lock — what's wrong?
This is almost always the multipoint locking mechanism — the gearbox that drives the hooks and bolts into the frame when you lift the handle. It's a mechanical failure, not a lock issue. The mechanism needs to be replaced, not the lock. Parts vary by door brand; John will check on site and quote before ordering anything.
Can the mechanism be repaired, or does it always need replacing?
Occasionally a cam or roller can be replaced individually, but usually once the gearbox has stripped or seized, the whole mechanism case needs to go. Attempting to repair a stripped gearbox typically means it fails again within weeks.
How long does a full mechanism replacement take?
Usually 1–2 hours once the correct part is confirmed and in hand. If the mechanism needs ordering, John can make the door secure in the meantime so you're not waiting with a door that won't lock.
My door has dropped and won't close properly — is that a locksmith job?
Yes. Door drop on uPVC is usually a hinge adjustment — a 15–30 minute fix. It's worth doing before replacing any mechanism, because a misaligned door puts stress on the mechanism and causes it to fail prematurely.
“Handle going up and down with nothing happening — classic symptom. John diagnosed the gearbox, had the part with him, and had it fixed in under two hours. Door locks perfectly now.”
“Front uPVC door seized completely on a Sunday. One call at 8am and it was sorted by 11. He even adjusted the hinges while he was there without being asked.”
Locked out? Need a locksmith now?
Call now and speak to John directly — no call centre, no script. You'll know the price before he's on his way.