uPVC window lock repair
uPVC window won't open or lock? Repaired, not replaced.
Wolverhampton, Stafford and Cannock. Seized espagnolettes, spinning handles and dropped sashes, fixed for a fraction of a new window.
If a uPVC window has stopped opening or will not lock, the problem is nearly always the locking mechanism, not the window itself. A seized espagnolette strip, a handle that spins without gripping, mushroom cams that have dropped out of line with their keeps, or friction hinges that have stiffened with age: every one of those is a repair, not a replacement. The expensive mistake is letting a window or glazing firm talk you into new windows when a £75 to £115 mechanism repair would have sorted it. Read the checks below first, then if you still need me, ring direct or send a photo on WhatsApp and I will tell you what it is and what it costs before I set off.
- No Call-Out Fee
- No VAT Added
- Standard DBS Checked
- £1M Insured
- 12 months Guarantee
uPVC window won't open? Three checks before you force anything
Before you wrestle the handle or reach for a tool, run these three checks. Between them they tell you, and tell me on the phone, whether you are looking at a worn handle, a misaligned sash, a dry mechanism or a failed strip. The difference is a quick adjustment versus a part, and forcing a stiff window handle is the one move that turns the cheap fix into the dearer one.
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Try the handle gently, both ways, and don't force a stiff one
Turn the window handle slowly to the unlocked position and try the sash. If the handle is stiff, do not heave on it: a window handle that is fighting you is usually a sign the cams are caught or the mechanism is dry, and forcing it is exactly how handles snap off in your hand. A handle that turns freely but does nothing has lost its grip on the mechanism. A handle that will not reach the full unlocked position means the cams are jammed against their keeps. Each tells me something different.
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Look down the opening edge: are the cams lined up with the keeps?
With the sash open even a crack, look at the long locking strip down the edge of the window. You will see small mushroom-shaped cams that roll into matching keeps on the frame when you lock it. If a cam is sitting proud of its keep, or scraping the frame, the sash has dropped slightly and the mechanism is binding. That is an adjustment, not a new window, and it is the single most common reason a uPVC window stops opening or locking cleanly.
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Check the hinges and the rebate for grit, old paint or seized arms
Open windows that have not moved in months sometimes just need the friction stays (the metal hinge arms) freeing off, and the rebate clearing of grit, leaves or a skin of old paint. A squirt of dry PTFE lubricant on the hinge arms and the cams, worked in gently, frees a lot of "stuck" windows with no parts at all. Never use oil or WD-40, which gum up and attract more dirt. If it still will not move after that, the mechanism or a stay has failed and needs a proper repair.
Is it the espagnolette, the handle, the cams or the hinges?
Match your symptom to one of the four branches below. Each tells you what has almost certainly failed, what fixing it costs, and how long it takes. Every one of them is a repair to the window you already have. If anyone tells you a failed window lock means a whole new window, that is the upsell to walk away from.
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If the handle turns or spins freely but the window won't open or lock...
The handle has lost its grip on the espagnolette mechanism: either the handle spindle has worn, or the drive cam inside the gearbox has rounded off, so turning the handle no longer slides the locking cams along the strip. On most uPVC windows this is a quick fix. If the mechanism just needs freeing and adjusting that is from £75, a new handle is from £85, and if the espagnolette strip itself has failed it is replaced from £115. I carry the common handles and strip lengths on the van so it is usually one visit.
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If the handle won't turn the full way to lock the window...
The cams on the locking strip are not lining up with their keeps on the frame, usually because the sash has dropped a touch on its friction hinges or the keeps have worked loose. The cams catch instead of rolling home, so the handle stops short. Forcing it is how handles snap. The fix is normally an adjustment, easing the hinges and realigning or repacking the keeps, from £75 and often no new parts at all.
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If the window has stiffened up and only opens with a real fight...
A dry, stiff espagnolette and seized friction stays, with seasonal expansion of the uPVC as the final straw. Cleaning and lubricating the mechanism and the hinge arms, then adjusting the keeps so the cams roll in cleanly, normally frees it off for good, from £75. If a stay or the strip has actually broken under the strain, replacing it is from £115.
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If a cockspur or espagnolette handle has snapped or won't engage...
A broken or worn window handle is one of the cheapest jobs there is. The old handle comes off, a matching new one goes on, and the window locks properly again, from £85. The only thing to get right is the handle type and the spindle, because cockspur, espagnolette and tilt-and-turn handles are not interchangeable. Send me a photo on WhatsApp and I will bring the right one rather than guessing.
What a replacement-window salesman won't tell you
A uPVC window that will not open or lock can almost always be repaired by freeing or replacing the mechanism, the handle or the hinges, for a fraction of the cost of a new window. The locking gear is a separate, replaceable part bolted to the sash. A new window is only genuinely needed when the frame itself or the sealed glass unit has failed, which is a different problem. I would rather adjust your existing windows and have you recommend me than sell you replacements you did not need.
Why it's almost always a repair, not a new window
This is the part the window-replacement industry would rather you did not know. The bit of your window that has failed (the handle, the espagnolette strip, the gearbox, the mushroom cams, the friction hinges) is hardware that bolts to the sash and the frame. It is designed to be removed and replaced on its own. None of it requires touching the glass or the frame profile. A seized mechanism, a spinning handle or a dropped sash is a mechanical repair measured in tens of pounds, not a glazing job measured in hundreds.
A genuinely new window is only the answer when the frame has cracked or distorted, the sealed double-glazed unit has blown (misted up between the panes), or the sash has physically failed. Those are real, but they are a different fault from a lock that has stopped working, and a handle that spins is not evidence of any of them. If I come out and the honest answer really is that the window is beyond a hardware repair, I will tell you plainly and you will owe me nothing for parts I have not fitted.
Recent window lock call-outs
Three recent window jobs across Wolverhampton, Stafford and Cannock. Seized mechanisms, a spinning handle, a dropped sash. Real-pattern situations, real prices on the receipt, sat next to what a window or glazing firm had quoted to replace the windows instead of repairing them. Customer details kept to first name and town at their request.
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Thursday 12 June 2026 at 4.30pm · Wolverhampton
Mrs Lynne T., Wolverhampton
Three windows that would not open, the two in the living room the worst of them. The handles turned but the sashes would not budge. A window company had been out and quoted her for three replacement windows. She wanted a second opinion before spending that kind of money.
A window firm quoted for replacement £1,150Paid to me to repair £165Every one of them was a seized espagnolette and dry friction stays, not a failed window. Freed off all three mechanisms, lubricated the strips and the hinge arms, and realigned the keeps so the cams rolled home cleanly. All three open and lock properly again. £165 for the lot instead of eleven hundred for windows she did not need.
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Monday 2 June 2026 at 10.15am · Stafford
Mr Daniel P., Stafford
Ground-floor window handle spinning round and round and the window would not lock at all. He was worried about security with it left unlocked overnight. Convinced it meant a new window.
A window firm quoted for replacement £320Paid to me to repair £115The drive cam in the espagnolette gearbox had worn round so the handle could not move the locking cams. New handle and a replacement espagnolette strip fitted in about half an hour. Window locks solid again, security sorted the same morning, for a fraction of a replacement window.
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Saturday 24 May 2026 at 1.00pm · Cannock
The Reilly family, WS11, Cannock
Bedroom window handle would not turn the full way to lock, and it was getting worse. Twelve-year-old uPVC windows. They had been told by a salesman the whole window was "past it" and needed replacing.
A window firm quoted for replacement £380Paid to me to repair £75The sash had dropped a couple of millimetres on tired friction hinges, so the cams were catching their keeps instead of rolling in. Eased the hinges, repacked and realigned the keeps, lubricated the strip, and the handle turned fully home with one finger again. No new parts, no new window.
Window security and the standards that hardware is tested to are set out by Secured by Design, the official UK police security initiative, and the Master Locksmiths Association publishes consumer advice on window and door hardware. My from-prices for the work above start at £75 to repair or adjust a single window lock, £85 to replace a worn handle, and £115 for a new locking mechanism.
What customers say about window and lock repairs
Verified Google reviews from real customers across Wolverhampton, Stafford, Cannock and the surrounding villages.
I contacted Sean in a panic after our back door wouldn’t lock at 21:15 on a Sunday night. Sean came back with a price almost immediately and offered to come and look at it straightaway. At my request, I asked him to come Monday morning and he sent me an ETA and turned up bang on time. Sean quickly diagnosed the problem, he had to go off to get a a part and when he was on his way back to me, he even shared his location via WhatsApp so I knew when he would be back. Part fitted, worksite cleaned up and he was on his way. Reasonably priced, fantastic communication from start to finish and a great bloke to speak too as well. Thanks Sean, you’re an absolute star!
Absolute pleasure meeting you and your wife today in Codsall / Wolverhampton. I'm really pleased I was able to repair your faulty upvc door mechanism. Thankyou for the glowing review....it's really appreciated. Sean - Lockerfella Locksmiths 24/7
I was locked out of the house so gave Lockerfella a message. Sean was incredibly swift in his initial response, giving an ETA and an estimate cost at the same time. I immediately booked in with Sean and he came as arranged, tried his best to pick the lock, however it wasn’t to be so he changed the lock and was all done and dusted in a reasonable time. He was polite, prompt and professional. I would recommend anyone needing a locksmith to contact Lockerfella
Thankyou so much James. It was a pleasure to assist you in cannock that day with your emergency locksmith call-out.
I had a great experience with Lockerfella Locksmith, especially with Mr Sean. He was professional, patient, respectful, and took the time to make sure everything was done properly. My door lock turned out to be much more difficult than expected, but Sean stayed calm and worked hard until the job was completed perfectly. I really appreciated his honesty, kindness, and excellent workmanship. I highly recommend Sean and Lockerfella Locksmith to anyone looking for a reliable locksmith. Thank you again, Sean, and I wish you continued success in your business!
It was an absolute pleasure helping you today Saeideh in Wolverhampton. Thankyou so much for the kind words. Sean - Lockerfella Locksmiths 24/7.
Absolutely brilliant service from Lockerfella Locksmiths. We left Sean a whatsapp message at 2.30am as we had stupidly left our front door keys inside when leaving the house. He answered pretty much immediately. Sean arrived with us in Stafford within 30 minutes and had us back in within 5 minutes and fitted us with some upgraded anti snap locks. Thankyou!
You're more than welcome Matt 😊
Sean came out for an emergency call out at 2am due to a lock malfunction on the front door. He was responsive from the first point of the phone call and was clear with what he was able to do and provided an accurate timescale and live location When sean arrived he felt like someone who was a safe person and as a lone female that felt important when I couldn’t get in my home in the early hours. He’s was patient and thoughtful with my dogs who were trapped inside. He was friendly, calming and reliable. Would highly recommend him
Thankyou for your review, it means so much. I'm so glad I could help you this morning in Stafford with the emergency call out. Have a great day to you and the doggies 🐕. Sean - Lockerfella Locksmiths 24/7
Phoned this lovely man this morning before 8am , it's now 11.28 am and my lock is fixed , thank you Sean , as I live alone i was feeling vulnerable, thank you so much , fir your prompt response
Thankyou so much for your review Maureen. Real pleasure assisting you today in Walsall to replace your Euro Cylinder and Door handles. Sean ☺️
I locked myself out my house and phoned Sean at 1.32am. He arrived at my house in Bilston 35 minutes later. He lives 30 minutes away. He was very professional and tidy. I would recommend him to anyone. Within 1 hr and 15 minutes of calling him he had come out, sorted my lock and on his way home. You can call him anytime and he will get to you asap. Worthy of the 5 star rating
Thankyou for your review Shell. Real pleasure to assist you both with your emergency call-out. Sean - Lockerfella Locksmiths 24/7
I run a letting agency in Wolverhampton and unfortunately had a tenant whose UPVC locking system had collapsed locking them into the flat unfortunately during the football match between England and Croatia in the 2026 World Cup. As you can imagine, I was having a bit of trouble getting a locksmith! At least until Sean contacted me. He went out very quickly, opened the door and replaced the gearbox working from 11 pm until 2 am so not very sociable hours. Given that I thought the cost was very reasonable and the service was excellent. I will certainly be using Sean again and I cannot recommend him highly enough. The world of emergency locksmiths can be a murky one at times so it is really nice to have someone you can trust to call on.
Thankyou so much Andy. It wss my absolute pleasure. 😊
Prices
From-prices for uPVC window lock repair
The figures below are the floor prices for the window jobs I am called to most. They include attendance, diagnosis and labour, with no separate call-out fee. Where a new part is needed, a standard part is included in the from-price and any upgrade is itemised so you can see exactly what each one cost. If you have several windows to sort on the same visit, the per-window cost comes down because I am already there. The full price list with covers and affects sits on the dedicated pricing page.
- Window lock repair / adjustment, per window (free or realign a seized espagnolette or cam) from £75
- Window handle replacement, per window (worn or snapped cockspur or espagnolette handle) from £85
- Window mechanism replacement, per window (espagnolette strip beyond repair) from £115
- Window gearbox replacement, per window (failed drive gearbox in the mechanism) from £125
- Same-visit additional windows reduced per window
- Out-of-hours emergency (6pm to 8am, weekends, bank holidays) from £170
No VAT added on top. No call-out fee on any of these. Where a new part is needed, a standard part is included in the from-price and any upgrade is itemised on top. I quote the all-in figure before any work starts. See the full price list and what each one covers →
About the locksmith
The locksmith answering your call
I'm Sean Hamilton. I run Lockerfella as a one-man-band. If you ring me about a window that will not open or lock, the phone rings on me, I work out from your symptoms whether it is the handle, the espagnolette, the cams or the hinges, and I will repair the window you have rather than sell you a new one. No call-out fee. No upsell from a straightforward repair to a set of replacement windows.
- 30+ years fascinated by locks. I've been picking, stripping and studying locks for the love of it for over 30 years. Lockerfella is what happens when a lifelong interest in how locks work becomes the day job.
- Trained and certified. Certificate of Locksmith Skills from A'Jam Locksmiths covering cylinder, mortice, padlock, wafer and euro lock picking, plus re-keying and mortice bypassing.
- Standard DBS checked, £1M insured, 12 months workmanship guarantee. Redacted DBS and insurance certificates are published on the About page, with originals available to view in person before work starts.
- One man, one van, one phone number. The phone rings on me directly. No call centre. No third-party fitter. If I quote you a price, that's the price you pay.
Common questions about uPVC window lock repair
Straight answers about why a uPVC window will not open or lock, why a handle spins, whether it can be repaired rather than replaced, what each fix costs, and how long it takes.
Why won't my uPVC window open?
On a uPVC window it is nearly always the locking mechanism, not the window itself. The usual causes are: the espagnolette (the long locking strip down the window edge with the mushroom cams on it) has seized or its gearbox has failed, so the handle turns but the cams will not pull in; the cockspur or espagnolette handle has worn or snapped so it no longer drives the mechanism; the cams have dropped out of line with their keeps so they are wedged; or the friction stays (the metal arms in the hinge) have seized after years with no lubrication. Far less often the sash has simply been painted or sealed shut. The good news is almost all of these are a repair, not a new window. Tell me what the handle does and I will know which one it is before I set off.
My window handle spins round but the window won't open or lock. What's wrong?
A window handle that turns but does nothing has lost its grip on the mechanism. Either the spindle or drive cam inside the espagnolette gearbox has worn round, or the handle itself has stripped, so turning it no longer moves the locking cams along the strip. It is the window version of a door handle going floppy. On most uPVC windows this is a quick fix. A new handle is from £85. If the espagnolette just needs freeing and adjusting that is from £75, and a new locking mechanism where the strip is beyond repair is from £115. I carry the common handles and espagnolette lengths on the van so it is usually one visit.
Can a uPVC window lock be repaired, or do I need a whole new window?
In the large majority of cases it is a repair, and anyone telling you the whole window needs replacing because the lock has failed is selling you a window you do not need. The locking mechanism (the espagnolette strip, the gearbox, the handle, the cams and keeps) is a separate part that bolts to the sash and can be freed, adjusted or swapped on its own. A new sealed glass unit or a whole new window is only needed if the frame itself has failed or the double glazing has blown, which is a different problem entirely. If I get to your window and genuinely cannot repair the mechanism, I will tell you that to your face and not charge you for parts I have not fitted.
How much does it cost to repair a uPVC window lock?
A single window lock repair (freeing, adjusting or realigning a seized espagnolette, cockspur handle or cam) is from £75. Replacing a worn or snapped handle is from £85, and a new locking mechanism where the espagnolette is beyond repair is from £115 per window including the part. If you have several windows to sort on the same visit, like the living-room pair plus a couple of others, the per-window cost comes down because I am already there. There is no call-out fee and no VAT added on top, and I will give you the all-in figure on the phone or once I have seen the windows, before any work starts.
My window won't lock and the handle won't turn the full way. What's the problem?
If the handle will not turn fully to the locked position, the cams on the espagnolette strip are not lining up with their keeps on the frame. Usually the sash has dropped slightly on its friction hinges, or the keeps have worked loose, so the mushroom cams are catching instead of rolling into place. Forcing the handle in that state is how handles snap. The fix is normally an adjustment: easing the hinges, realigning or repacking the keeps, and a little lubrication of the mechanism, from £75 and often no new parts at all. If a cam or the gearbox itself has actually broken, that is a gearbox replacement from £125.
My window has stiffened up and won't open in hot or cold weather. Is that the lock?
Partly. uPVC expands a touch in the heat and the sash sits slightly differently through the seasons, which is enough to make a marginal mechanism bind. But a window that only opens with a real fight has usually got a dry, stiff espagnolette and seized friction stays underneath the seasonal movement, and the weather is just the final straw. Cleaning and lubricating the mechanism and the hinge arms, then adjusting the keeps so the cams roll in cleanly, normally frees it off for good, from £75. If the strip or a friction stay has actually failed, replacing it is from £115. Either way it is a repair on the window you have, not a new one.
How long does a uPVC window lock repair take?
A single window is usually 20 to 40 minutes depending on whether the espagnolette can be freed and adjusted or needs swapping for a new strip. A handle change is 10 to 15 minutes. If you have a few windows to do in one visit, allow roughly half an hour a window, less for handles. I test each window several times, opening, closing and locking it with the handle, before I take payment, so you are not left with one that binds again the next time the weather turns.
Ready when you are
Window won't open or lock? Send me a photo on WhatsApp.
Tell me what the handle does and send a photo of the window and the handle. I will tell you whether it is the handle, the espagnolette, the cams or the hinges, and what the all-in price will be, before I set off. No call-out fee. No deposit. No new-window upsell.
Page last reviewed: . Reviewed by Sean Hamilton, the locksmith behind Lockerfella, under our editorial standards.