Best Way to Change a Barrel Lock on a uPVC Door

smslocksmiths • April 9, 2025

Understanding uPVC Door Locks

uPVC doors, known for their thermal efficiency and security, are a popular choice for modern homes. They are low maintenance and resist fading or discolouring. For enhanced security, a barrel lock, specifically designed for uPVC doors, with a high security rating can be a great addition.

 

Essential Tools for Changing a Barrel Lock

  • A standard screwdriver
  • A replacement door barrel
  • A set of new keys for the new lock

 

Steps to Change the Barrel Lock

1. Prepare the Door: Ensure the door is stable and accessible from both sides by using door stoppers.

2. Remove the Door Handle: Use a Phillips-head screwdriver to loosen the screws on the inside of the door handle. Carefully remove the handle, taking care not to lose any small parts or damage the handle.

3. Access and Remove the Old Barrel: Locate and unscrew the barrel lock screw, then gently pull out the old barrel using the original key.

4. Install the New Barrel: Insert the new barrel with the new key and align it correctly before screwing it into place.

5. Reattach the Handle: Place the spindle back into the handle socket and reattach the handle to the door, ensuring it’s secure but not overtightened.

 

Tips to Prevent Common Issues

  • Avoid forcing the key into or out of the lock to prevent breaking the key inside the lock.
  • Be cautious not to strip the screw head or cross-thread the screws, which could make future removal difficult.
  • Take your time and follow each step carefully to avoid damaging the lock or door handle.
  • In case of any damage or difficulty, contact a professional locksmith immediately for assistance.

 

Conclusion

Changing a barrel lock on a uPVC door is a straightforward task that can be done in about five minutes. However, it’s crucial to follow each step carefully and avoid common pitfalls. For those who prefer professional assistance, SMS Locksmiths is always available to ensure the job is done efficiently and safely.

Smart Locks vs Traditional Locks: What’s Right for Your Home in Putney?

By Locksmiths • October 13, 2025
Introduction With technology advancing, you might be considering replacing your traditional locks with a smart or electronic locking system. But is that the right move for your Putney home? Here’s a breakdown of pros, cons, and what to look for. Traditional Locks: Still Reliable Time-tested mechanical systems no battery or electronics to fail Straightforward to repair or rekey Wide compatibility with UK standard locks (euro cylinder, mortice) Lower up-front cost Smart / Electronic Locks: Modern Convenience Remote access: lock/unlock via app or Bluetooth Temporary access codes or keycards (useful for visitors, workers) Audit trails: check who locked/unlocked and when Integration possibility with home automation / alarms Potential Downsides of Smart Locks Require power - battery changes or wiring More parts that may fail (electronics, motors) Compatibility: not all doors/frames will suit smart lock retrofits Cost: higher initial investment What to Consider for Your Home Usage : Are you in often, or out most of the time? Smart locks shine if you plan to use remote functions. Door type : UPVC or multipoint doors require particular coordination; some models may not fit. Security standard : Make sure the smart lock is certified (e.g. to British Standards) and offers forced-entry resistance. Backup method : Always maintain a mechanical backup (key override) in case electronics fail. Warranty & support : Pick brands with good support and ensure the locksmith can service them locally. Conclusion Smart locks can bring convenience and modern control, but they don't necessarily replace the need for a solid mechanical lock foundation. In many cases, a hybrid solution (mechanical + smart) works best. At SMS Putney Locksmith, we install and service both and we can advise what’s right for your door, budget, and security needs. 

How to Prepare for a Locksmith Visit: What You Should Do Before They Arrive

By Locksmiths • October 13, 2025
Introduction Having a locksmith come to your home can feel a little stressful, especially if it's in an emergency. But if you take just a few simple steps before they arrive, you can help them work more quickly and effectively and maybe reduce the cost in time and labour. 1. Identify the problem clearly Before you call, try to figure out exactly what’s wrong: is the key broken in the lock? Has the door warped? Did someone force entry? Observations like “key turns but won’t unlock” or “door alignment shifted after a move” help the locksmith arrive prepared. 2. Provide property details & photos if possible Send a photo or tell them the door type (UPVC, wooden, metal), lock brand or style (euro cylinder, mortice, multipoint), and whether there are other locks on that door (deadbolt, chain). This helps the locksmith bring the correct parts. 3. Clear access Make sure the path to the door is clear. Move cars or bins that could block access. Unlock gates if possible. The easier it is to get to the door, the quicker the work. 4. Have proof of address or identity ready A locksmith should verify you are the rightful occupant before gaining entry. Having a utility bill or ID ready will smooth this process. 5. Consider temporary security If a lock is failing and you’re waiting for the locksmith, consider using a chain lock or secondary bolt to add security until proper repair. 6. Ask for an estimate up front A trusted locksmith will give you a rough cost estimate before starting work, especially if parts are needed. Ask them what additional costs (parts, mileage, late hours) might apply.  Conclusion Preparing in advance helps the locksmith help you faster, safer, and potentially cheaper. At SMS Putney Locksmith, we aim to make the process smooth from beginning to end. Call us anytime for advice or to schedule a visit.
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