Changing the lock barrel on a uPVC door, often referred to as a euro cylinder lock, can be a straightforward DIY task. Follow these steps to replace the lock barrel:
- New uPVC door lock barrel (euro cylinder lock)
- Measuring tape or ruler
- Optional: Lubricant spray (lock lubricant or silicone spray)
- Determine the Correct Size:
- Measure the size of your existing uPVC lock barrel accurately. Euro cylinders come in various sizes, and it’s essential to get the right replacement. Measure from the center of the screw hole to each end of the cylinder (usually in millimeters). For example, you might measure it as 30/30 or 35/45.
- Purchase the Replacement Barrel:
- Visit a hardware store or order a new uPVC lock barrel online, ensuring it matches the measurements you obtained in the previous step. It’s also a good idea to purchase a lock with a snap-resistant design for added security.
- Unlock the Door:
- Ensure the door is unlocked before you begin. You’ll need access to both sides of the lock.
- Remove the Fixing Screw:
- Locate and remove the fixing screw on the edge of the door. This screw secures the lock cylinder in place. Use a screwdriver to remove it.
- Remove the Old Lock Barrel:
- Once the screw is removed, you can slide out the old lock barrel from the door. Push it out from either side, using the key or a screwdriver to assist if necessary.
- Insert the New Lock Barrel:
- Insert the new lock barrel into the door, aligning it with the screw hole. Make sure the cam on the cylinder lines up with the cam on the door mechanism.
- Reattach the Fixing Screw:
- Reinsert and tighten the fixing screw on the edge of the door. Ensure it’s snug but not overtightened to avoid damaging the lock.
- Test the Lock:
- Insert the key into the new lock barrel and test it from both sides to ensure it operates smoothly. The key should turn easily, and the door should lock and unlock without resistance.
- Optional: Lubricate the Lock:
- If the lock feels a bit stiff or sticky, you can use a lock lubricant or silicone spray to lubricate the cylinder. Apply a small amount to the key and insert it into the lock, then turn the key several times to distribute the lubricant.
- Dispose of the Old Lock Barrel:
- Properly dispose of the old lock barrel and packaging in accordance with local regulations.
Replacing a uPVC lock barrel is generally a straightforward process, but if you encounter any difficulties or are unsure about any step, consider consulting a locksmith or a professional for assistance. Proper installation is essential for the security and functionality of your door lock.