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Is your uPVC or Aluminium double glazed window stuck shut, jammed open, or is the handle spinning loosely? You don’t need a new window—you just need a new locking mechanism. At Window Fixers, we specialise in replacing failed gearboxesand shoot-bolt systems that cause windows to seize up. Our mobile engineers carry hundreds of parts to open your jammed window without damage and secure your home immediately. We offer Fixed Price Repairs, No Call-Out Fees, and a 1-Year Guarantee on all parts.
Please note: We specialise in uPVC and Aluminium windows only. We do not repair Timber/Wood windows, Single Glazing, Sash Windows, or Water Leaks.
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Window locks fail due to worn gearboxes or snapped drive rails. You don’t need a new window—we simply replace the internal mechanism. Our engineers carry hundreds of parts for uPVC and Aluminium windows to open jammed locks and secure your home in one visit. No Call-Out Fee. No Fix – No Fee.
0208 064 1844
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Save 20% on 3+ Windows
Get 20% OFF when replacing locks for 3 or more windows!
Offer only valid for UPVC casement windows*
We don’t just force windows open; we surgically repair them. A jammed window is usually caused by a failed gearboxor snapped drive rail. Our engineers are trained to open seized uPVC and Aluminium double glazed windows without damaging the frame. We carry hundreds of replacement mechanisms in our mobile workshops, meaning we can secure your home and restore smooth operation on the very first visit.
We specialise in replacing internal Espag locks, Shoot-bolt systems, and Cockspur handles. If it’s uPVC or Aluminium, we have the expertise to fix it.
We carry universal and specific gearboxes for major brands. We aim to fix your window lock issues immediately in most cases, not order parts for next week.
No hourly rates. No parking fees. You pay a simple fixed price of £175 per window (or less for bulk repairs), which includes the mechanism, labour, and VAT.
Sleep safe knowing your new lock is covered. We back every mechanism replacement with a full 12-month warranty for parts and labour.
Send a picture of your window via WhatsApp or email. We can usually identify the gearbox manufacturer instantly.
Approve your free quote & choose a repair time.
Our engineer will safely repair your windows without damaging the frame, remove the faulty mechanism, and fit a new one.
We test the lock alignment and handle operation. You only pay once the window is fixed.
Take advantage of our No Call-Out Fee and save 20% OFF when repairing 3+ window locks!
A faulty window lock can weaken your home’s security, let in draughts, and make opening or closing your window a struggle.
At Window Fixers, we specialise in UPVC window lock repairs, ensuring your windows lock securely and function smoothly. Whether your lock is jammed, broken, or won’t latch properly, our skilled technicians provide fast and affordable repairs using high-quality replacement parts.
We offer a fixed price of £175 per window including parts, labour and VAT, with no call-out charge and a 1-year guarantee. Check pricing for more details and how to get 20% off.
Plus, with our no fix, no fee policy, you only pay if we successfully restore your lock. Call us today for expert repairs you can trust!
Openable windows bring fresh air, better health, and a more comfortable home. They improve air quality, remove stale odours, and stop condensation and mould from building up. Good airflow keeps your home cool, reduces dampness, and lowers energy bills by cutting the need for fans or air conditioning. Fresh air also boosts well-being, helping you feel more refreshed every day.
If your windows won’t open, feel stiff, or have faulty locks, let Window Fixers help!
Our no fix, no fee policy ensures that you only pay if your UPVC or aluminium window lock mechanism is successfully repaired or replaced. If your lock is jammed, broken, or not securing properly, our skilled technicians will assess the issue and carry out the necessary repairs.
No charge applies if the problem cannot be fixed, giving you complete peace of mind.
For a hassle-free, risk-free window lock repair, call today and restore your home’s security.
Our Guarantee
At Window Fixers, we’re committed to delivering long-lasting repairs that stand the test of time. That’s why every repair we complete is backed by our Overhaul Guarantee. We provide a 1-year warranty on all uPVC and aluminium window and door repairs, covering hinges, locks, handles, and more. Additionally, our double glazed glass replacements come with a 5-year condensation guarantee for total peace of mind.
We ensure every repair is completed with precision, using high-quality parts and expert craftsmanship, so you can enjoy durable, reliable performance. If any issues arise within the guarantee period, we’ll resolve them promptly at no extra cost.
With our Overhaul Guarantee, you’re not just getting a repair—you’re getting a promise of quality and trust. Contact Window Fixers today to book your repair with confidence!
We specialise in uPVC and aluminium window locks, including multi-point locks, standard mechanisms, and high-security options.
Signs like a stiff handle, jammed lock, or difficulty turning the key usually mean your lock needs attention. A damaged or non-working mechanism is a clear sign it’s time for a replacement.
Absolutely! Our team can replace faulty or broken mechanisms with high-quality parts to restore your window’s security.
We charge a flat rate of £175.00 per window, which includes parts, labour, and VAT. There are no hidden fees, and the price covers everything.
Window handle replacement not included in price. If handle also need replacing that would be charged extra £45 per handle on same job.
Price is based on standard uPVC casement window**
Aluminium windows and more complicated repairs may cost more**
Avoid forcing it, as this could cause more damage. Contact us, and our technicians will safely repair or replace the lock for you.
We aim to provide fast service and can often repair or replace your lock on the same day or within 24 hours, depending on availability.
Yes, we provide fast-response local window repair services in London, including emergency window lock repairs. If you’re dealing with a broken window lock or need immediate help to replace window locks, we’re here to assist quickly and efficiently.
We offer our window lock replacement services across London and nearby areas, ensuring a quick response wherever you are.
Yes, all our window lock repairs and replacements come with a 1-year warranty for your peace of mind.
We provide reliable, affordable service with no call-out charge and a no fix, no fee guarantee. Plus, our skilled technicians ensure your windows are secure and functional in no time.
Need help with your window lock?
Call us at 0208 0641 844, email [email protected], or WhatsApp a picture of your window for quick response.
Check out commonly asked questions by our customers
we provide professional window and door repair services across London and Kent,
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