uPVC and composite doors use a multipoint locking system: one handle and one key operate several hooks, bolts and rollers along the edge of the door. When one part wears or the door drops, the whole thing can start to stick, jam or refuse to lock.
Common signs of a problem
- Handle feels loose, floppy or won’t spring back
- You have to lift the handle really hard to lock the door
- Key won’t turn, or only turns with the door pushed
- Door has dropped and catches on the frame
- Door is stuck locked and won’t open
Don’t force it — forcing a failing gearbox is how a cheap repair becomes a lockout. Give us a call and we’ll usually be able to fix it in a single visit.
What we can do
- Replace multipoint gearboxes and full mechanisms
- Adjust hinges and keeps so the door closes smoothly
- Fit new handles, including high-security handles
- Upgrade to anti-snap cylinders
- Repair and replace uPVC window handles and locks
- Open uPVC doors stuck in the locked position
Security tip: a uPVC door isn’t locked until you’ve lifted the handle and turned the key. Just closing it, or only lifting the handle, leaves it easy to open.