How uPVC window locks work
Most uPVC windows use a mechanism inside the sash that moves locking points into keeps on the frame when the handle is turned. Wear in the mechanism, the keeps or the hinges can all stop it locking.
Based in Hartlepool, covering Teesside & East Durham

A window that will not lock is a worry. We find out why, then repair or replace the locking parts so it locks properly again.
12-month guarantee on hardware and repairs
15+ years
in the glazing trade
£2m
public liability insurance
Free
surveys & fixed-price quotes
Family-run
David Webb & son
Service overview
We inspect the window's locking mechanism, keeps and handle, then replace or adjust the worn parts so the window locks securely.
The handle turns but the window does not lock, the handle is stiff or loose, or the window only locks if pushed hard.
Sometimes the lock itself has failed. Sometimes a dropped hinge means the lock no longer lines up. We check both, so the fix lasts.
A window that does not lock is an easy way into a home and can cause issues with home insurance.
The cost of waiting
Our process
01
Call David or send the quote form describing the window lock problem. A photo helps.
02
David visits, checks the fault and the frame around it, and explains what has actually gone wrong.
03
You get one fixed price for the repair before any work starts. No obligation.
04
Worn or broken parts are replaced and everything is adjusted so it works smoothly.
05
We test the repair with you before leaving. Hardware and workmanship guarantees apply.
What you get
Windows that lock properly every time.
We find the cause, not just the symptom.
12-month workmanship guarantee on repairs and 12-month manufacturer guarantee on hardware.
In detail
Most uPVC windows use a mechanism inside the sash that moves locking points into keeps on the frame when the handle is turned. Wear in the mechanism, the keeps or the hinges can all stop it locking.
Usually, yes. It is often a worn mechanism or a sash that has dropped out of line. David will confirm at the free survey.
Replacement locking parts carry a 12-month manufacturer guarantee and the repair carries a 12-month workmanship guarantee, which does not apply if someone else has attempted the repair first.
Rarely. Most lock faults are repaired without replacing the window.
Yes. DW Glazing and Repairs holds £2,000,000 public liability insurance, so your home is covered while the work is carried out.
Payment is by cash or bank transfer.
Hartlepool, Blackhall, Billingham, Stockton-on-Tees, Wingate, Thornaby, Peterlee, Seaton Carew, Horden, Easington, Wynyard and Greatham. If you are nearby and not sure, call David on 07855 948729 and ask.
Monday to Friday, 8am to 6pm. Send the quote form at any time and David will come back to you during opening hours.
Free survey, fixed-price quote and no obligation. Monday to Friday, 8am – 6pm.