Replacement Window Handles for uPVC Windows: Espag vs Cockspur

Replacement window handles for uPVC windows come in two dominant styles: espagnolette (espag) handles and cockspur handles. Each type suits different window profiles, locking mechanisms and security expectations. This article outlines how to identify the correct handle, compares the advantages and disadvantages of espag and cockspur styles, and provides practical, actionable advice for homeowners and tradespeople when replacing uPVC window handles.

How to identify the handle type

A quick visual inspection will identify the style:

• Espag handles operate a multipoint espagnolette locking mechanism inside the frame. They typically have a rectangular or round spindle and secure with screws into the faceplate of the handle. Espag handles often incorporate a key lock or a push-button.
• Cockspur handles fit onto the outside of the opening sash and engage with a keep on the frame. They are simpler, with a short arm or “cockspur” that hooks over the keep when closed.

Measure the existing handle before ordering a replacement:

• For espag handles note the spindle length and square dimension, the screw hole centres on the baseplate (mm), and whether the handle is left- or right-handed.
• For cockspur handles measure the projection and the distance between fixing holes. Note whether the keep is single or adjustable.

Photograph the window edge and the locking mechanism. Tradespeople should record part numbers stamped on original hardware where present. This information reduces returns and ensures compatibility.

Espag (espagnolette) handles: benefits and installation tips

Advantages:

• Superior security: Espag handles operate a multi-point locking strip, providing better resistance to forced entry than single-point cockspur keeps.
• Integrates with modern locking systems and often includes a key or push-button lock for child safety and egress control.
• Suitable for tilt-and-turn or top-hung windows that require a central locking mechanism.

Practical fitting tips:

• Check the length of the espagnolette bar or the position of runs of gear when replacing the handle; mismatched lengths can prevent the locking points from engaging.
• Ensure the spindle is the correct square size (commonly 7mm or 8mm) and length. Use a metal rule to measure from the handle base to the end of the spindle.
• When replacing a locked handle, open the window to the closed and locked position before removing the old screws to prevent the locking strip from moving.
• Use threadlocker on screws in high-use doors and windows to prevent loosening from repeated operation.

Recommended espag example: TSS Cockspur Window Handles — robust for trade installations and suitable for security upgrades.

Cockspur handles: benefits and installation tips

Advantages:

• Simplicity and low cost: Cockspur handles are straightforward to fit and ideal for older uPVC windows that use single-point locking.
• Quick replacement: Many cockspur handles replace existing units without modification to the sash.
• Adjustable keeps are available to compensate for worn frames where compression or alignment has shifted.

Practical fitting tips:

• Confirm the arm projection and the fixing hole positions on the faceplate before ordering replacement handles to ensure the new spur aligns with the existing keep.
• If the keep is worn or misaligned, fit an adjustable keep or replace the keep and spindle fixings simultaneously.
• Use corrosion-resistant screws for coastal installations, and apply a small amount of lubricating grease to the spur pivot to prevent stiff operation.

Recommended cockspur example: TSS Cockspur Window Handle — cost-effective and suitable for many retrofit situations.

Security, locks and standards

Security requirements influence handle choice:

• For ground-floor windows and accessible openings, espag handles with a key lock or a 3-star security rating are preferable. Ensure the replacement handle and locking strip meet the relevant British Standards or Secured by Design recommendations when applicable.
• Cockspur handles are acceptable for upper-floor windows or where additional external security measures exist, but they should not be used where high security is required.

Consider child safety and ventilation positions. Espag handles with a restrictor or multi-position function allow windows to remain partially open without compromising security.

A reliable branded option for improved security and durability: TSS Offset UPVC Window Handles, suitable when higher security credentials are desired.

Tools, common faults and maintenance

Essential tools for replacing handles:

• Cross-head screwdriver set and a torque driver for controlled tightening
• Metal rule and callipers for measuring spindles and screw centres
• Lubricant such as silicone or graphite for moving parts
• Threadlocker for screws in high-vibration areas

Common faults and how to address them:

• Loose handle: Tighten fixings; if screw holes are stripped in uPVC, use a larger screw or plastic repair plug before refitting.
• Handle slipping on spindle: Replace worn spindle or fit a handle with the correct sized square spindle.
• Locking points not engaging: Check espagnolette bar alignment and the end-cleats. Adjust keeps or replace the locking strip if bent.

Routine maintenance extends lifespan: clean moving parts and applying a small amount of lubricant annually; check fixings and adjust keeps to compensate for sash movement.

Choosing replacement window handles for uPVC windows: trade vs DIY considerations

Tradespeople should check site-specific requirements: fire escape routes, insurance stipulations and the client’s security expectations. Fitting multiple replacements on a property offers economies of scale and ensures consistent colour and finish.

Homeowners can replace many handles themselves if they are comfortable with basic tools and measurement. When security locks or complex espagnolette systems are involved, or where part identification is unclear, professional fitting reduces risk of incorrect parts and potential glazing or locking damage.

Summary

Selecting the right replacement window handles for uPVC windows depends on window type, security needs and ease of installation. Espag handles offer superior security for accessible openings, while cockspur handles remain a practical, economical solution for many retrofit situations. Measure accurately, match spindle sizes and fixing centres, and use corrosion-resistant fixings where necessary. For further guidance on handle types, measurements and finishes consult the comprehensive resource: Window Handles Guide