Guide to window handles

Introduction

Window handles are a small but essential component of any window system. The right window handles improve usability, security and appearance. This guide explains the main types of window handles, how to choose the correct one, and practical steps for measuring, fitting and maintaining them.

Why the right window handles matter

Good window handles provide smooth operation, reliable locking, and a finish that suits the room. Poor-quality handles can cause drafts, stickiness, or compromised security. When replacing or upgrading handles, consider compatibility with existing hardware, the type of window and the locking mechanism.

Common types of window handles

Cockspur handles

Cockspur window handles are surface-mounted and are common on older UPVC and aluminium casement windows. They are simple to fit and use but offer less security than multipoint locking systems. See TSS Cockspur Window Handles for a common option ( /p/tss-cockspur-window-handles ).

Espagnolette and espag handles

Espag handles operate an internal espagnolette mechanism and are widely used on modern UPVC and aluminium casement windows. Avocet Slimline Offset Window Espag is an example designed for a slim profile ( /p/avocet-slimline-offset-window-espag ). These handles latch into a multiplier mechanism and are generally compatible with euro-profile cylinders.

Offset UPVC handles

Offset handles are designed to clear beads or clip-on cills and provide a neater appearance on UPVC windows. TSS Offset UPVC Window Handles are developed specifically for these applications ( /p/tss-offset-upvc-window-handles ).

Thumb-turn and key-locking handles

Thumb-turn handles have an internal turn for quick locking from the inside. For added security, use a euro cylinder with thumb-turn function such as the TL Thumb Turn Euro Cylinder ( /p/tl-thumb-turn-euro-cylinder ). Where external key access is required, consider kitemarked cylinders like the Ultion Plus TS007 for enhanced protection ( /p/ultion-plus-ts007-3-kitemarked-euro-key-turn-cylinder ).

Specialised handles for top-hung and in-line mechanisms

Top-hung windows and windows with non-standard opening mechanisms need specific hardware. For top-hung windows you may pair handles with a Top-Hung Window Hinge - Standard ( /p/top-hung-hinge-standard ) or use an In-Line Window Mechanism for a coordinated system ( /p/inline-window-mechanism ).

How to choose the right window handles

Identify the window type: casement, top-hung, sliding, or tilting. Different windows use different handle types.

Check the locking mechanism: cockspur, espagnolette or euro cylinder. Match the handle to the mechanism for smooth operation.

Measure backset and screw centres: the distance from the spindle centre to the fixing screw holes must match the handle; these dimensions are critical when replacing handles.

Consider finish and design: choose a finish that resists wear in your environment, such as stainless steel or durable powder-coated finishes.

Security needs: select handles that work with secure cylinders and have secure fixings. Combining a robust handle with a kitemarked cylinder such as the Ultion Plus improves resistance to forced entry ( /p/ultion-plus-ts007-3-kitemarked-euro-key-turn-cylinder ).

Measuring for replacement window handles: step-by-step

Remove the existing handle and measure the spindle length: measure the square spindle from end to end.

Measure screw centres: the distance between the two fixing screws is usually 43mm, 48mm or 92mm; note the exact measurement.

Backset and faceplate: for espag systems, measure the distance from the edge of the handle to the centre of the spindle.

Check the locking type: if a cylinder is present, note whether it is a thumb-turn or key-operated cylinder and the cylinder diameter.

Photograph the existing hardware: a clear photo helps a supplier confirm compatibility.

Fitting window handles: basic instructions

Note: if you are unsure about compatibility or security, consult a professional. These are general steps for typical UPVC and timber casement handles.

Tools required: screwdriver, tape measure, replacement handle, replacement screws and possibly a new spindle.

Remove the old handle: open the window and undo the handle screws. Remove the handle and spindle.

Clean the area: clear debris and check the mechanism for wear. Replace worn parts such as bubble gaskets if required. B003 Bubble Gasket and B004 Bubble Gasket are common sealing parts to restore airtightness ( /p/b003-bubble-gasket ), ( /p/b004-bubble-gasket ).

Fit the new spindle: ensure it matches the original length and shape.

Position the new handle: align the spindle, insert the handle and secure with the supplied screws.

Test operation: open and close the window several times, checking locking and smoothness. Adjust the spindle or fixings if the handle binds.

Upgrading security with cylinders and hardware

If you are fitting locking handles, select a certified euro cylinder. Use anti-snap, anti-drill cylinders where security is a priority. The Ultion Plus TS007 3* Kitemarked Euro Key & Turn Cylinder is suitable where high security and insurance compliance are required ( /p/ultion-plus-ts007-3-kitemarked-euro-key-turn-cylinder ).

Fit a thumb-turn cylinder if you need quick internal locking without a key: TL Thumb Turn Euro Cylinder ( /p/tl-thumb-turn-euro-cylinder ). Combine with secure handles that have anti-tamper fixings.

Maintaining window handles and associated hardware

Lubrication: apply a light spray of silicone or graphite lubricant to moving parts annually. Avoid oil-based lubricants that attract dust.

Tightening: check screws and fixings yearly. Loose screws can make handles feel wobbly and strain mechanisms.

Gaskets and seals: damaged seals can cause draughts. Replace bubble gaskets such as B003 or B004 to restore weatherproofing ( /p/b003-bubble-gasket ), ( /p/b004-bubble-gasket ).

Hinges and mechanisms: inspect top-hung hinges and in-line mechanisms for wear; replace if the window sags or does not stay open. Refer to Top-Hung Window Hinge - Standard and In-Line Window Mechanism pages for matching replacements ( /p/top-hung-hinge-standard ), ( /p/inline-window-mechanism ).

Troubleshooting common problems

Handle stiff or hard to turn: check for debris in the mechanism; lubricate and check spindle alignment.

Handle moves but window does not latch: the spindle may be stripped or the espag mechanism worn; replace worn parts or the whole handle and spindle.

Window does not lock fully: check the striker keeps and locking points; adjust the keep or use an offset handle if clearance is an issue.

External access with a key to open from outside: check cylinder type and security; replace with a secure cylinder like the Ultion Plus if necessary.

Choosing complementary hardware

When replacing handles, consider whether other components need renewal. A worn hinge or mechanism may reduce handle life. Flag Door Hinge in stainless steel is a durable option where hinge replacement is needed ( /p/flag-door-hinge-sss ). Using matched hardware ensures smooth operation and a consistent finish.

Final checklist before purchase

Confirm window type and locking mechanism.

Measure spindle length and screw centres precisely.

Decide on keyed or thumb-turn cylinder and security rating.

Choose a finish that matches existing hardware.

Check for associated parts to replace: gaskets, hinges, or mechanisms.

Related Reading

Explore more guides on related topics:

• Window Stay Maintenance: Keeping Your Hardware Working
• Egress Hinge

Conclusion

Selecting the right window handles combines compatibility, security and finish. Accurate measurement, correct matching to the locking mechanism and periodic maintenance will extend their life and ensure reliable operation. For many common situations there are direct replacement handles and compatible parts such as TSS Cockspur Window Handles, Avocet Slimline Offset Window Espag, and secure cylinders like Ultion Plus (see product links above). If you are unsure at any stage, a professional installer can confirm the correct specification and fit the hardware safely.