Replacing a lock on a uPVC door is more complex than simply swapping one cylinder for another. The right replacement depends on your door's age, manufacturer, and security requirements. This guide helps you choose correctly, avoiding costly mistakes and ensuring your door remains secure and functional.
Step 1: Identify Your Current Lock
Before purchasing a replacement, you need to know what you currently have:
- Remove the existing euro cylinder and measure its total length
- Note the split point: measure from the centre screw to each end separately
- Identify the multipoint lock brand (often stamped on the faceplate)
- Count the number of locking points on the door edge
- Check whether the current cylinder is thumbturn or double-keyed
Step 2: Choose Security Level
Euro cylinders are available in different security grades:
- Standard cylinders: Basic protection, not recommended for external doors
- Anti-snap cylinders: Sacrificial sections that break away before the lock mechanism
- 1-star TS007: Tested against common attack methods
- 3-star TS007: Highest rating, often required for insurance compliance
Step 3: Consider Multipoint Lock Condition
If your door is difficult to lock or the handle requires excessive force, the multipoint mechanism may be failing, not just the cylinder. Replacing the cylinder alone won't solve mechanical issues. A professional locksmith can assess whether the full mechanism needs replacement.
Professional Fitting Recommended
Keys4U locksmiths carry hundreds of uPVC lock types and can identify and replace your lock in a single visit. Professional fitting ensures correct alignment, smooth operation, and insurance-compliant installation.
Need a uPVC lock replacement? Call 033 3305 2993.