uPVC windows are known for their durability, thermal efficiency, and low maintenance, but like any mechanical component, the handles can wear out over time. Stiff operation, floppy movement, or complete breakage often means it’s time for a replacement.
Fortunately, replacing a uPVC window handle is one of the simplest DIY jobs you can do, even with minimal tools or experience. This step-by-step guide walks you through everything you need to know—from understanding handle types to installing a brand-new one safely and correctly.
Why Window Handles Need Replacing
A window handle plays a crucial role in the locking and opening mechanism. When it begins to fail, the entire window’s usability and security are compromised. Common signs you need a replacement include:
- The handle spins without engaging the lock
- Difficulty turning the handle
- Visible cracks or looseness
- A broken spindle
- A lock that no longer secures the window
- Key no longer turns in a locking handle
Replacing the handle promptly restores both functionality and security.
Types of uPVC Window Handles
Before purchasing a replacement handle, it’s important to identify which type you currently have. uPVC handles come in several styles:
1. Espag (Espagnolette) Handle
The most common modern style. Features:
- A spindle protruding from the back
- Works with multi-point locking systems
- Usually secured with two screws
2. Cockspur Handle
Often found in older uPVC windows. Features:
- A curved spur that hooks over a wedge
- No spindle
- Also fixed with two screws
3. Tilt-and-Turn Handle
Used in tilt-and-turn windows. Features:
- Operates in two directions
- Usually has a longer spindle
- Multi-position locking
4. Inline vs. Cranked
Espag handles also come in:
Inline: Straight handle suitable for left or right windows
Cranked: Angled for ergonomic use; available in left or right versions
Correct identification ensures the new handle fits properly and operates smoothly.
Tools and Materials You Will Need
You don’t need a large toolkit for this job. The basics include:
- Replacement uPVC window handle
- A medium-sized Phillips or Pozidriv screwdriver
- Tape measure (for spindle length)
- Small container for screws
- Optional: penetrating oil for stuck screws
Step 1: Identify the Existing Handle and Measure the Spindle
Before removing the old handle, take note of:
Handle type – espag, cockspur, or tilt-and-turn
Spindle length – most espag spindles are 10–55 mm
To measure spindle length:
Locate the spindle where it enters the frame.
Measure from the base of the handle to the end of the square metal rod.
This ensures the replacement works with your existing lock mechanism.
Step 2: Remove the Screw Covers
Most uPVC window handles have small plastic caps covering the screws. To reveal the screws:
Rotate the handle to the open position.
Gently pry off the caps using your fingernail or screwdriver tip.
Keep them safe if you plan to reuse them.
Step 3: Unscrew the Handle from the Frame
With screws exposed:
Hold the handle firmly.
Use your screwdriver to remove the top and bottom screws.
Place the screws in a container so they don’t get lost.
Once removed, the handle should slide off easily. If it doesn’t, a gentle wiggle usually frees it.
Step 4: Clean the Area and Inspect the Lock Mechanism
Before installing the new handle:
Wipe away any dust or debris from the surface.
Check the spindle hole for obstructions.
Ensure the window’s internal locking mechanism moves freely when you push it with the screwdriver.
If the mechanism is stiff, apply a small amount of lubricant or silicone spray.
Step 5: Prepare and Position the New Handle
Take the new handle and:
Check that the spindle length matches your measurement.
If the handle comes with multiple spindle options, choose the correct one.
Align the spindle with the hole in the window frame.
Place the handle in the exact position of the old one, aligning screw holes.
Step 6: Secure the New Handle
Once aligned:
Insert the screws provided with the new handle (or reuse the original ones if they fit).
Tighten them evenly—don’t overtighten, as this can damage the uPVC frame.
Test the handle’s movement to make sure it operates smoothly.
Finally, snap the screw covers back on to create a clean finish.
Step 7: Test the Locking Function
A crucial final step:
Fully close the window.
Turn the handle to lock and unlock it.
Ensure the locking points engage properly.
If it’s a key-locking handle, test the key as well.
Smooth operation indicates successful installation.
Common Mistakes to Avoid
1. Buying the Wrong Spindle Length
A too-short spindle won’t engage the lock; a too-long spindle can jam the mechanism.
2. Overtightening Screws
This can crack the plastic housing or distort the frame.
3. Incorrect Handle Type
Espag vs. cockspur mistakes are common—double-check before buying.
4. Ignoring a Faulty Mechanism
If the internal lock is broken, replacing the handle won’t fix the problem. You may need a new espagnolette strip.
Tips for Smooth Installation
If screws are corroded, apply penetrating oil 10 minutes before removing them.
When unsure whether you need a left- or right-handed handle, look from the inside—hinges on the left usually mean a right-handed handle, and vice versa.
Inline handles are universal and help avoid confusion.
Keep old handles—the screws or covers may come in handy later.
When to Call a Professional
Although replacing a handle is simple, there are times when expert help may be necessary:
The window still won’t open after replacing the handle.
The locking mechanism is jammed or broken.
The window is part of a fire escape and must meet specific safety regulations.
If you feel unsure at any point, a window technician can diagnose deeper issues.
Conclusion
Replacing a uPVC window handle is a quick and rewarding DIY task that can instantly improve the function and security of your home’s windows. With only a few basic tools and a correct replacement handle, most homeowners can complete the job in under 10 minutes.
By following the steps outlined in this guide—identifying the handle type, removing the old unit, installing the new one, and testing it thoroughly—you’ll have a smoothly operating window once again.