There are several types of window handles that you will find in and around your home. Spindle type handles found on uPVC windows are called espagnolette, or ‘espag’ for short. These are button operated and will be found on newer uPVC window compositions.
If your windows use older aluminium or uPVC frames, you may come across the classic cockspur-type handle — a simple but effective latch mechanism that engages with a wedge or catch to pull the window firmly shut. As explained by ERA Home Security, “a cockspur handle secures the window by holding the sash and frame together using the nose of the handle and a wedge” — making it a trusted option for many older installations. Before replacing one, it’s essential to check the “step height” or nose height, the fixing-centre spacing, and whether your window is left- or right-handed so that your new handle fits properly and restores both security and draught-proofing.
Tilt and turn type window handles are for windows that open inwards into a property. To operate a tilt and turn window you need to pull the window down towards you. The handles on this type of window will operate at 360 degrees.
If you have slightly older windows such as aluminium or older type uPVC windows then cockspurs are the handle for these compositions. The cockspur window handle is a simple latch mechanism that is simple to use and has a key locking function. These type of double glazing window handles come in left and right options and operate by turning them 90 degrees.
Measurements
Firstly, replacement cockspur window handles come in left and right hand options. As these are often fitted onto older uPVC and aluminium windows the sizing can be different on each window. The measurement you need to be familiar with is the backset. This is taken from the spur height to the base of the handle.
Typical sizes on a replacement cockspur backset can be anything from 9mm to 20mm – sometimes more.
What If I Can’t Find The Correct Size?
As cockspur handles are retrofitted to older composite windows the sizing can often be a major issue. However, regardless of what size backset you buy you can always adjust the size of the handle to fit the window type.
Window wedges, or cockspur wedges are an easy fix when installing your window handles. They are attached to the actual frame of the window and help you ensures that the Cockspur handle pulls the window firmly into the closed position. These come in different wedge sizes to fit your need.
We stock high quality replacement uPVC handles whether you require chrome, white etc. We stock Avocet window handles as well as Trojan and the unique and adjustable VERSA range.
Why the Right Fit Matters
Understanding the correct step height, fixing centres, and handle alignment is crucial not only for ease of operation but also for maintaining a tight seal against draughts and moisture. For a broader perspective on how proper window fittings affect your home’s comfort, energy efficiency, and preservation, you can refer to Historic England’s official guidance on upgrading historic windows:
👉 Modifying Historic Windows as Part of Retrofitting Energy Saving Measures
By consulting authoritative sources like Historic England, homeowners can better appreciate how modern replacements—like well-fitted cockspur handles—play a vital role in both preserving traditional window structures and improving household energy efficiency.
Check out the featured products from this article below 👇 Including Cockspur Replacement uPVC Sparta Window Handle
