Why upgrading to new window handles matters

Replacing old or damaged window furniture is a small investment that can make a big difference to appearance, security and operation. Whether you are fitting new window handles to UPVC, timber or aluminium frames, the right choice improves ease of use, reduces draughts and helps prevent unauthorised entry.

In this guide you'll find practical advice on choosing, measuring and fitting new window handles, plus compatible products and maintenance tips.

Choosing the right new window handles

When selecting new window handles, consider these key factors:

Window type: casement, top-hung, tilt-and-turn or sliding. Some handles are specific to the mechanism.

Fixing style: screw centres, backplate size and whether the handle is offset or inline.

Locking: non-locking cockspur or locking espagnolette/escutcheon handles with euro cylinders.

Material and finish: choose corrosion-resistant finishes for coastal locations.

Security rating: for high-security doors or easily accessible windows, opt for kitemarked or TS007-rated cylinders.

Recommended products

For standard top-hung windows, consider a reliable hinge plus a handle that matches the stay: Top-Hung Window Hinge - Standard.

For UPVC windows with offset spindles try: TSS Offset UPVC Window Handles.

Where a cockspur design is used, the TSS Cockspur Window Handles are a direct replacement.

For slimline espagnolette systems, the Avocet Slimline Offset Window Espag is compatible with many modern frames.

If you need a thumb-turn cylinder for internal locking, see the TL Thumb Turn Euro Cylinder and for high security the Ultion Plus TS007 3* Kitemarked Euro Key & Turn Cylinder.

Measuring for replacement handles: step-by-step

Accurate measurements are critical to ensure new window handles fit first time.

Identify the handle type

- Is it a cockspur, espagnolette, inline or offset handle? A photo helps when ordering.

Measure the spindle length and square size

- Remove the handle to reveal the spindle. Measure the square spindle from the edge of the handle recess to the end. Standard sizes are 7mm, 8mm or 9mm but always check.

Measure screw centres and backplate

- Measure the distance between screw centres on the handle backplate. Also measure the overall backplate height and width if the handle covers other holes.

Check for offset or inline spindle

- An offset handle has a spindle that sits off centre. Note any offset distance as some replacements are only suitable for offset spindles.

Note locking and cylinder position

- If the handle uses a euro cylinder, measure the cylinder projection and the distance from screw line to cylinder centre so the escutcheon aligns correctly.

If unsure, take clear photos from inside and outside, show the spindle and any markings, and consult the supplier.

Fitting new window handles: practical steps

These instructions are for typical screw-on handles. If you are replacing a locking cylinder or espagnolette, consult the mechanism manufacturer or a professional.

Tools needed: screwdriver, replacement handle kit, pencil, tape measure, and masking tape.

Prepare the window

- Open the window fully and secure it. Place masking tape around the handle area to protect the frame.

Remove the old handle

- Undo the cover cap and remove fixing screws. Gently pull the handle off the spindle.

Inspect and clean

- Check the spindle and surrounding area for corrosion or damage. Clean away old grease and debris. Replace worn or damaged components.

Fit the new handle

- Slide the new handle onto the spindle. Ensure orientation is correct so the handle operates the locking mechanism. - Align screw holes and start screws by hand to avoid cross-threading. Tighten evenly.

Test the operation

- Close and operate the window several times to ensure smooth action and correct locking. Make minor adjustments to spindle orientation if necessary.

When to call a professional

If the espagnolette mechanism or gearbox needs adjustment.

For complex multi-point locking systems.

If you suspect frame or mechanism damage that impairs security.

Security: making your windows safer

Choosing secure new window handles is only part of the picture. Combine handle upgrades with these measures:

Use a 3-star Kitemarked cylinder such as the Ultion Plus TS007 3* Kitemarked Euro Key & Turn Cylinder for accessible windows.

Fit a thumb-turn internal cylinder like the TL Thumb Turn Euro Cylinder where required for quick egress.

Keep handles locked when windows are not in use, especially on ground-floor and accessible windows.

Regularly maintain gaskets and seals: bubble gaskets such as B003 Bubble Gasket or B004 Bubble Gasket help maintain a weather-tight seal which reduces forced-entry risk via weakened frames.

Compatibility with hinges and mechanisms

When replacing handles on a window system, check compatibility with the underlying mechanism. Examples:

For top-hung windows, confirm handle movement matches the Top-Hung Window Hinge - Standard position.

For windows using inline mechanisms, ensure the handle pairs with the In-Line Window Mechanism.

For doors in the same property, use durable hinges like the Flag Door Hinge - Stainless Steel to ensure coordinated operation.

Maintenance tips for long life

Lubricate moving parts annually with a light graphite or silicone spray; avoid oil that attracts dust.

Wipe handles with a mild detergent and avoid abrasive cleaners that remove protective finishes.

Check fixings periodically and retighten if they work loose.

Replace worn gaskets and seals promptly to prevent water ingress and frame distortion.

Final checklist before you buy

Confirm window type and handle style (cockspur, espag, offset, inline).

Measure spindle size, screw centres and backplate dimensions.

Decide whether you need a locking handle or cylinder upgrade for security.

Check compatibility with hinges and mechanisms in the same window system.

Keep photos and measurements to hand when ordering replacements.

Upgrading to new window handles is a straightforward way to improve functionality and security. With the right measurements and a little patience, most homeowners can fit replacement handles themselves; for more complex mechanisms, professional help will save time and ensure the window remains secure and weather-tight.

Relevant products mentioned

In-Line Window Mechanism

Top-Hung Window Hinge - Standard

B003 Bubble Gasket

TL Thumb Turn Euro Cylinder

TSS Cockspur Window Handles

Avocet Slimline Offset Window Espag

Flag Door Hinge - Stainless Steel

TSS Offset UPVC Window Handles

B004 Bubble Gasket

Ultion Plus TS007 3* Kitemarked Euro Key & Turn Cylinder

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