uPVC White Window Handles: Espag vs Cockspur Explained

uPVC white window handles are a small but important component of modern windows, influencing operation, security and aesthetics. This article explains the two most common types found in UK homes — espagnolette (espag) and cockspur handles — and offers practical advice on selection, installation and maintenance for homeowners and tradespeople.

What are espag and cockspur handles

Espag handles operate a multi-point locking mechanism via an internal spindle and gearbox. Turning the handle operates a rod or gear that moves locking hooks or bolts along the window edge. Commonly used on casement and tilt-and-turn windows, espag handles provide a neat appearance and good security.

Cockspur handles are surface-mounted, with a simple fixed plate that bears against the frame or keeps when the handle is turned. They are typically used on older or budget uPVC windows and are valued for their simplicity and ease of replacement.

Key differences that matter

• Security: Espag handles generally offer superior security because they form part of a multi-point locking system and can be supplied with 3 or 5 point locking heads. A product example built to higher security standards is the TSS Cockspur Window Handles. Cockspur handles rely on the strength of the screw fixings and the keep on the frame, making them less secure unless paired with robust keeps like legged keeps or reinforced strike plates.

• Operation and accessibility: Espag handles offer smoother operation and can include features such as positive locking and key locking for added security. Cockspur handles provide a simple quarter-turn operation, which can be easier for users with limited dexterity but may feel less refined.

• Installation complexity: Cockspur handles are surface-fitted with two or three screws and a spindle-less design, making them straightforward to replace. Espag handle replacement often requires matching spindle length, gearbox type (e.g., 7mm spline), and screw centres, so tradespeople must measure carefully before ordering.

• Appearance: Both styles are available in white to match uPVC frames. Espag handles often have a lower profile and cleaner look; cockspur handles can be bulkier on the frame face but remain popular where traditional aesthetics are preferred.

Choosing the right uPVC white window handles

Selection should balance security, ease of use and compatibility.

• Match to locking mechanism: Confirm whether the existing window uses espagnolette hardware or a simple cockspur latch. For espag systems, identify the spindle size and locking cam/gear configuration before ordering a replacement.

• Consider security requirements: For ground-floor or easily accessible windows, specify high-security espag handles or key-locking variants. The TSS Offset UPVC Window Handles is an example of a trusted branded option that balances security and value.

• Think about user needs: Where mobility or hand strength is an issue, choose handles with ergonomic grips or cockspur variants that require less turning effort. Some espag handles have anti-slam or easy-turn features.

• Finish and durability: Opt for UV-stable white coatings rated for exterior use to prevent discolouration. Stainless steel fixings and corrosion-resistant gearing extend life, particularly in coastal locations.

Practical measurement and replacement steps

Accurate measurement prevents ordering the wrong part. The following checklist is suitable for tradespeople and competent DIYers.

1. Identify handle type: Confirm whether the handle fits onto a spindle and operates a gearbox (espag) or is surface-mounted (cockspur). Espag handles are secured with screws to the gearbox; cockspurs are fixed by screws into the frame.

2. Measure screw centres: For cockspur handles, measure the distance between the fixing screws centre to centre. For espag handles, measure the distance between the handle fixing screws and note any faceplate dimensions.

3. Record spindle size and length: For espag handles, common spindle sizes include 7mm square and 8mm square. Measure the length of the spindle protruding from the gearbox to ensure the handle fits flush.

4. Note gearbox and locking head type: If the existing mechanism includes a multi-point lock, record whether it is 3 or 5 point and the position of the locking cam.

5. Check handedness: Some handles are reversible; others are handed. Ensure the handle operates in the correct direction for the window.

6. Order matching keeps and screws: Replacing an old handle often requires a new keep or longer screws to reach reinforcement. When replacing a cockspur, inspect the keep for wear and fit a new one if necessary, such as those supplied with quality cockspur handle sets like the TSS Cockspur Window Handle.

Installation tips:

• Work from inside where possible and support the window sash during handle removal.
• Use threadlocker on critical fixings for added security.
• Avoid over-tightening screws which can strip uPVC threads; where necessary use a self-tapping screw of appropriate length and thread type.

Maintenance and security upgrades

Regular maintenance prolongs handle life and improves security.

• Lubrication: Apply a light amount of silicone spray to espagnolette gearboxes and moving parts annually. Avoid heavy oils that attract dust and gunk.

• Tighten fixings: Check and tighten handle screws every 6–12 months. Loose fixings can compromise operation and security.

• Replace worn keeps: Worn or bent keeps reduce the effectiveness of cockspur handles. Replace keeps showing deformation or elongated screw holes.

• Consider upgrades: For improved security, replace cockspur handles with a keyed espag handle or fit additional security hardware such as sash jammers or reinforcement plates. The Yale Sparta range offers a good balance of recognised brand quality and ease of upgrade when security is a priority.

Final recommendations for tradespeople and homeowners

• Tradespeople should measure twice and order once: use accurate calipers for spindle and screw measurements and keep a small stock of common spindle sizes and handles to reduce downtime.

• Homeowners should prioritise security on ground-floor windows and ensure replacement handles are UV-stable white to maintain appearance.

• When in doubt, match the handle type to the existing locking mechanism rather than assuming universal fit. For many modern uPVC windows, espag handles deliver better security and a cleaner look; cockspur handles remain a practical, economical option where appropriate.

Window Handles Guide