How to Choose the Right uPVC Window Handles for Your UK Windows?

Replacing a broken or outdated uPVC window handle? Before purchasing a replacement, it’s essential to correctly identify the type of double glazed window handles fitted to your window. With so many types of window handles available—each with different sizes, spindles, and locking systems—choosing the wrong one can result in poor fitting, reduced security, or unnecessary replacement costs. 

In this guide, the experts at Daylight Glazing help you easily identify your existing handle, take accurate measurements, and select the correct replacement window handles for your home. Whether you’re looking for uPVC window handles replacement, aluminium window handles, or stylish double-glazing window handles chrome, understanding the basics ensures a perfect fit and long-lasting performance. 

Types of Double Glazed Window Handles

The most common modern option, espag handles operate a multi-point locking system inside the window frame. 

  • Use a 7mm square spindle 
  • Fixed with 43mm screw centres 
  • Available in locking and non-locking designs 
  • Common in modern double glazed windows 
  • Typically found on older uPVC and aluminium windows. 
  • Clamp shut using a spur and wedge block 
  • Require measuring the step height 
  • Often used where multi-point locks are not present 
  • Designed for windows that both tilt inward and open fully. 
  • Usually feature a longer spindle 
  • Heavier and more robust than standard handles 
  • Common in European-style uPVC windows 
  • A hybrid design combining features of cockspur and espag handles. 
  • Use a spindle but close onto a wedge block 

Whether you’re searching for “uPVC window handles replacement” or “double glazing window handles near me”,

our experienced team ensures the right fit every time.

Key Measurements to Identify Your uPVC Window Handle

Correct measurements are crucial when choosing replacement window handles. 

1- Spindle Length

This is the length of the square metal bar that fits into the window lock. 

  • Standard size: 7mm square
  • Lengths vary from 9mm to 55mm
  • Measure how far the spindle protrudes from the handle base

2- Step Height (Cockspur Handles Only)

The distance from the base of the handle to the underside of the spur. 

  • Common sizes: 21mm (uPVC) and 9mm (aluminium)
  • Incorrect step height affects window tightness

3- Fixing Hole Centres

The distance between the screw holes on the handle. 

  • Espag handles: 43mm centres
  • Cockspur handles: typically 58–62mm

4- Handle Handing

Some handles are left- or right-handed due to a cranked design. 

  • Clockwise opening → Left-handed
  • Anti-clockwise opening → Right-handed

Inline handles are universal and can be fitted either way. 

5-Security & Finish Options

Popular finishes include:

  • White
  • Black
  • Satin silver
  • Chrome window handles for a contemporary look

Along with selecting the right uPVC window handles, understanding door styles can make a big difference—read our blog on pocket doors vs sliding doors

When to Replace uPVC Window Handles

You should consider replacement if: 

  • The handle feels loose or stiff
  • The key lock no longer works
  • The window doesn’t close properly
  • You’re upgrading for better security or appearance
uPVC Window Handles

Understanding how double glazing window handles work can also improve your home’s safety and functionality. Common handle styles such as espagnolette (espag), cockspur, and tilt-and-turn all use different locking mechanisms that impact security and ease of use. Many homeowners ask, “Are all double glazing window handles the same?”—and the answer is no. Differences in spindle length (including double glazing window handles 20mm), locking systems, and frame compatibility all matter. 

If you’re upgrading for added safety, double glazing window handles with locks are an excellent choice, especially for family homes. From single replacements to double glazing window handles 2 pack, choosing the right option ensures durability and peace of mind. 

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FAQs

No. While many modern handles follow standard sizing, older windows often use discontinued or uncommon designs. This is why identifying your handle type and measurements is essential before purchasing double glazing window handle replacements. 

Espag window handles operate a spindle-driven multi-point locking system, providing enhanced security and a tighter seal. Cockspur window handles, typically found on older uPVC or aluminium windows, rely on a curved spur that clamps against a fixed wedge on the frame. 

The cost to replace a UPVC window handle in the UK typically ranges from £10 to £40, depending on the type of handle, finish (such as chrome or white), and whether it includes a locking mechanism. If you hire a professional, labour costs may add £30–£60, though many homeowners choose to replace handles themselves as it’s a straightforward task. 

To measure spindle length, remove the handle and measure from the base of the handle to the tip of the spindle. Common spindle lengths for uPVC window handles range between 15mm and 40mm, though longer options are available for deeper frames. 

No. Cockspur and Espag handles use completely different locking mechanisms. To replace a Cockspur handle with an Espag handle, the window’s internal locking system would need to be changed. For a direct replacement, always match the handle type to the existing window mechanism.