uPVC window fault finder.
Window won’t close, lock or open? Glass misted or cracked? Answer two or three questions and we’ll tell you the likely fault, how it is fixed and what it costs, before anyone visits.
Takes under a minute. No sign-up, and nothing to pay.
- Hinges, locks, handles and glass
- Fixed prices from £108, VAT included
- No call-out charge
- No fix, no fee
Window fault finder
What is wrong with your window?
Built for the window in most UK homes: an outward-opening uPVC casement, double or triple glazed, on friction hinges with an inline espag handle and espag lock. Pick the part that is playing up and answer two or three questions.
- Part, current step
- Symptoms
- Diagnosis
Free repair quote
Get your exact price
A few quick taps. We aim to respond within 15–30 minutes during opening hours.
The four things that go wrong with a uPVC window.
Almost every casement window fault comes down to one of these. Each is repaired without replacing the window.
Window hinges
From £175Dropped, draughty or badly closing windows. We fit a matched pair of friction hinges and re-align the sash.
Lock mechanisms
From £175Stuck shut, won’t lock or stiff to turn. We replace the failed gearbox or locking strip.
Window handles
From £108Snapped, loose, missing or key lost. A matched new handle, fitted and tested.
Misted or broken glass
From £220Condensation between the panes, cracks and smashed glass. A new sealed unit in your existing frame.
uPVC window repair prices.
The prices the fault finder quotes. Parts, labour and VAT included, with no call-out charge.
| Repair | From | Includes | Guarantee |
|---|---|---|---|
| Window handle replacementExtra handles on the same visit from £54 eachIncludes New handle, fitting, VAT | £108 | 1 year | |
| Window lock & mechanism repairIncludes Parts, labour, VAT | £175 | 1 year | |
| Window hinge replacement (pair)Includes Hinges, fitting, re-alignment, VAT | £175 | 1 year | |
| Draughty window re-alignmentIncludes Adjustment, worn parts, VAT | £175 | 1 year | |
| Misted double glazing (sealed unit)Includes Measuring, new unit, fitting, VAT | £220 | 10 years | |
| Broken or cracked glassIncludes Measuring, new unit, fitting, VAT | £220 | 10 years |
From prices for a standard, safely accessible uPVC casement window. We confirm your exact price from a photo before booking.
From fault to fixed price in three steps.
No home visit needed to get a price.
Answer two or three questions
Pick the part that is playing up and tell us what the window does. The fault finder narrows it down to the likely cause.
See the fault and the price
You get the likely fault in plain English, how we repair it, anything safe to try first, and the fixed from price.
Send a photo to confirm
WhatsApp a photo or finish the short quote form. We confirm the fault and your exact price before you book.
Window fault questions, answered.
Can’t see yours? Send us a photo and we’ll reply in minutes.
Why won’t my uPVC window close properly?
Usually because the friction hinges have worn, so the opening part of the window has dropped or no longer pulls in tight against the frame. A stuck locking point or a faulty handle can also stop it closing. Worn hinges are replaced as a matched pair from £175 per window, including re-alignment and VAT.
Why does my window handle turn but the window won’t open?
The handle turns a gearbox that drives the locking points along the edge of the window. If the handle moves but the window stays shut, the gearbox has usually stripped or a locking point is stuck. Don’t force it: that can damage the lock, the glass or the frame. We release the window and replace the mechanism from £175.
How do I know if my double glazing has blown?
Wipe the glass inside and out. If the mist is still there, it is between the two panes and the sealed unit has failed. Mist that wipes off from indoors or outdoors is ordinary condensation, and the glass is fine. A failed unit is replaced in your existing frame from £220, with a 10-year guarantee.
Do I need a new window, or can it be repaired?
Hinges, lock mechanisms, handles and sealed glass units are all separate parts that can be replaced on their own. In most cases the frame stays and only the failed part is replaced, which costs far less than a new window.
Can I fix a uPVC window myself?
Some things are safe to try: tightening a loose handle, cleaning the hinge tracks and putting a drop of light oil on the moving lock points and hinge pivots. The fault finder tells you when that applies. Don’t force a stuck handle or lever a jammed window, and don’t try to replace glass yourself.
How accurate is the fault finder?
It follows the same questions our engineers ask when you send a photo, and gives the most likely fault from your answers. It is a guide, not a survey: we confirm the fault and your exact price from a photo before you book, and there is no charge if we can’t complete the agreed repair.
What doesn’t the fault finder cover?
It is built for outward-opening uPVC casement windows. We also repair tilt and turn windows, aluminium windows and uPVC doors: send us a photo for those. We don’t work on timber or sash windows, Velux or skylight windows, rubber gaskets, water leaks or damaged frames.