UPVC Window Handle Replacement – Save Time and Money with This DIY Fix
When a UPVC window handle starts to feel loose, stiff, or fails to lock properly, it's often a sign that it’s time for a replacement. The good news? Replacing a UPVC window handle is one of the easiest and most cost-effective DIY tasks a homeowner can tackle.
At FixTrade.co.uk, we stock a wide range of high-quality UPVC window handles designed for long-lasting performance, security, and ease of installation. In this guide, we’ll walk you through the full DIY process, from identifying the correct handle type to fitting a brand-new one in just a few simple steps.
UPVC Window Handle Replacement
Step 1: Identify Your Existing UPVC Window Handle
Before you buy a replacement, you need to identify the type of handle currently fitted to your window. Most UPVC windows use espagnolette (espag) handles, which are attached to a metal strip that runs along the window’s edge and operates the locking points. If your handle operates via a spindle that turns a lock mechanism inside the window frame, chances are it’s an espag handle.
At FixTrade.co.uk, our GlazeAssist UPVC Window Handles are a popular universal choice. They’re compatible with UPVC, aluminium, and timber casement windows, making them ideal for almost every home.
Tip: Look at your current handle and note if it’s a left- or right-handed design. Most of our models are universal and suitable for either orientation.
Step 2: Measure for a Perfect Fit
To ensure you get the correct size replacement, you’ll need to take two key measurements:
1. Spindle Length – This is the square metal bar that inserts into the window mechanism. It’s usually measured in millimetres. Our GlazeAssist handles have a standard 15mm spindle length, which fits most common applications.
2. Screw Hole Centres – Measure the distance between the two fixing screw holes. The most common spacing is 43mm, which our GlazeAssist UPVC window handles support.
It’s also worth noting the spindle width, though in most cases it’s a standard size that matches all major mechanisms.
Step 3: Choose the Right Handle
Now that you’ve taken your measurements, it’s time to choose your new handle. At FixTrade.co.uk, we stock GlazeAssist UPVC Window Handles built for durability and security. Here’s what sets them apart:
• Universal Fit – Suitable for both left- and right-hand openings
• Multi-Material Compatibility – Works with UPVC, aluminium, and timber windows
• Secure and Corrosion-Resistant – Certified to BS EN 1670 standards
• Tested for Durability – Independently verified to last over 20,000 cycles
• Includes Everything You Need – 2x fixing screws, 1x key, 1x screw cover cap, and 1x non-locking plug
With these features, our handles aren’t just replacements, they’re upgrades.
Step 4: Remove the Old Handle
Start by opening the window and locating the screws that fix the handle to the window sash. These are often hidden beneath plastic caps. Use a flathead screwdriver to gently pop the caps off and reveal the screws beneath.
• Unscrew both fixings and gently pull the old handle away from the frame.
• Take note of how the spindle sits within the mechanism—it should slide straight out.
Step 5: Install the New UPVC Window Handle
With the old handle removed:
1. Align the new handle with the existing holes and insert the spindle into the window mechanism.
2. Use the supplied screws to secure the new handle firmly in place.
3. Test the handle to ensure it turns smoothly and locks into place properly.
4. Fit the screw covers and add the included key for secure locking.
And that’s it, you’ve just successfully completed your own UPVC window handle replacement in under 10 minutes!
Why Choose FixTrade.co.uk for Your UPVC Window Handle Needs?
When you shop with FixTrade.co.uk, you’re getting more than just parts, you’re getting peace of mind. We offer:
• Expert-Selected Products – All products are sourced for reliability and long-term use.
• Competitive Prices – High-quality hardware without the inflated price tag.
• Fast UK Shipping – We aim to dispatch quickly so you can get the job done faster.
• Customer Service that Cares – Our team is here to support you at every step of your DIY project.
Our UPVC window handles from the GlazeAssist range are perfect for homeowners who want professional-grade performance with DIY simplicity.
Extra Tips for a Smooth Installation
- If your window feels stiff even after replacing the handle, a small amount of silicone spray lubricant on the locking strip may help.
- Always keep the included key in a safe place, many insurance policies require windows to have key-lockable handles for security compliance.
- Consider replacing all your window handles at once for a consistent look and feel throughout your home.
Contact FixTrade.co.uk Today
Whether you’re refreshing a single window or upgrading every handle in the house, FixTrade.co.uk has you covered. Browse our full range of UPVC window handles and hardware essentials online today.
Got a question? Need help choosing the right part?
Contact us today - our friendly, knowledgeable team is here to help.