How to Replace a uPVC Window Handle | Spindle, Removal & Fitting Guide

Before you upgrade your uPVC window handles with a brand new replacement you should know what size window handle you need. Before you purchase your new shiny chrome or brass window handle check the size of your current one. The main measurement you are looking for is the spindle length. The spindle is the piece of metal that sticks out of the back of the window handle and connects directly into the uPVC window. see fig.1

If you already know which window handle you need, browse our full range of uPVC window handles — we stock espag, cockspur and tilt-and-turn handles in all common sizes and finishes.

Espag handles are the most common type on modern uPVC windows — they operate the espagnolette locking mechanism by rotating the spindle. Browse our uPVC espag window handles for inline and cranked options in white, chrome and black.

If your window has a cockspur handle — the type with a nose or spur that hooks over a wedge on the frame — browse our cockspur window handles for direct replacements in all common sizes.

Before ordering a new handle, you need to identify which type of window handle you currently have and measure the spindle length.

Our guide on how to identify uPVC window handles explains the difference between espag and cockspur handles, how to measure the spindle, and how to choose the correct replacement.

Spindle Lengths

Spindle lengths can come in various sizes. Depending on your uPVC window profile you may need one of the following – 10mm, 15mm, 20mm, 30mm or 40mm. The biggest and most common window handle size is 40mm. This means that if you purchase a window handle with a bigger sized spindle you can easily cut it down to fit. For example, if you require a 20mm spindle yet you have a 40mm option then simply mark down where the 20mm mark is and use a saw to cut it off.

Before assuming the handle itself is the only issue, it’s important to check the locking mechanism inside the frame. Over time, wear and tear can cause the gearbox or spindle to malfunction, making it seem like the handle is broken when the problem actually lies deeper within the window’s internal components. As explained in TGP Systems’ guide, Replacing uPVC Window Handles and Locks: A Practical Guide, understanding how the locking system interacts with the handle can save you unnecessary replacements and ensure lasting window security. The guide also highlights useful diagnostic tips for identifying when to replace just the handle versus when a full locking mechanism repair may be needed. (tgpsystems.com)

If your window is difficult to close or the locking points are not engaging even with a new handle, the window hinges may be worn.

Replacing the friction stay hinges restores smooth operation and proper alignment. Browse our uPVC window hinges.

To see how you can easily replace your current window handle see our video below.

For a complete overview of all our window hardware — handles, hinges, mechanisms and restrictors — visit our full windows collection.

Check out the featured products from this article below 👇 Including Universal Window Handles - Maxim Multi-Spindle Inline

Tags: Diy home maintenance, Home security, Replacement guide, Upvc window handles, Window repair

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FAQ

How do you replace a uPVC window handle?

To replace a uPVC window handle, first open the window and locate the two screws holding the handle in place. These screws are usually hidden beneath a small cover plate. Remove the screws using a screwdriver and pull the handle away from the window frame. Align the new handle with the existing holes, insert the screws, and tighten them securely. Before finishing, check that the handle operates smoothly and locks correctly to ensure the window functions properly.

How do you remove a uPVC window handle?

Most uPVC window handles are secured with two screws located at the base of the handle. These screws may be hidden beneath a decorative cover that can be rotated or lifted. Once the screws are visible, remove them using a screwdriver. The handle should then pull away from the window frame. Removing the handle allows you to replace it with a new one or inspect the spindle and locking mechanism if the handle is faulty.

What types of uPVC window handles are there?

Several types of handles are used on uPVC windows, with the most common being espag handles. These operate a multi-point locking mechanism inside the window frame. Other types include cockspur handles, which use a spur that hooks over a wedge, and tilt-and-turn handles used on specialised window systems. Identifying the correct handle type is important when buying a replacement to ensure it fits the existing locking mechanism and screw positions.

What size spindle do uPVC window handles use?

The spindle is the square metal bar that connects the window handle to the locking mechanism inside the frame. Spindle sizes vary depending on the window system, but common lengths range between 15 mm and 40 mm. When replacing a handle, it is important to measure the existing spindle length to ensure the new handle operates the lock correctly. Choosing the correct spindle size ensures the handle engages the internal mechanism securely.

Why is my uPVC window handle stuck?

A uPVC window handle can become stuck due to wear, internal lock problems, or misalignment within the window mechanism. Dirt or debris inside the locking system can also prevent the handle from turning smoothly. In some cases, the handle itself may be worn or damaged and need replacing. If the problem continues after replacing the handle, it may indicate a deeper issue with the window hardware. Our guide on top signs your window mechanism needs replacing explains how to recognise when the internal mechanism may need repair or replacement.