How to Replace Lock on a UPVC Door
A door made of uPVC can be blocked when the multipoint lock becomes out of alignment with the frame. This can be corrected by re-installing the barrel of the lock. This is a simple fix that doesn't require special tools.

The first step is to open the door and look where the screw holes are located. The next step is to find the right size lock cylinder for your door.
Take out the old cylinder
The lock cylinder could be the reason behind your uPVC doors sticking or not closing correctly. Changing the cylinder is an easy and inexpensive way to fix this. You should always check the root of the problem before replacing it. It's possible that the door and frame are misaligned. This could make it difficult for the lock to close. In this situation, it is advisable to call a locksmith and pay for a service instead of trying to do it yourself.
Before starting the process, ensure the door is opened or secured securely so that it will not close between steps. Next, remove the handle with a screwdriver, and then remove the screws that secure it. It is recommended to remove these screws and put them in a safe location since you'll require them in the future to put the handle back on.
It is possible to access the lock-cylinder by taking off the handle. Check the edge of the cylinder, and you'll see a screw that is usually colored differently than all the other screws on the uPVC door. Unscrew the screw and use an unlocked key to open the lock of the barrel. When the lock is unlocked, it is possible to remove it and replace it with a brand new one.
The cylinder is an element of the lock, which houses the tumblers and also houses the key. When you insert the key it aligns with the tumblers and allows the barrel to rotate, which then unlocks the door. It is not common for the tumblers to be out of alignment, preventing the lock from working. If this happens, it's crucial to replace the previous cylinder with an anti-snap and anti-bump cylinder.
You should take a measurement of the spindle of the handle prior to purchasing a replacement cylinder in order to determine the proper size. There are around 25 different sizes of cylinders and it is crucial to choose the correct size to ensure that it will be able to fit in your door. It is also a good idea to consider the security level of the cylinder, as certain ones are more secure than others.
Remove the lock barrel
The lock barrel is the internal parts of a upvc door that house the tumblers and receive keys. The barrel will unlock the door when the correct key is entered. The barrel also houses an cylinder cam that turns to open or close the door. It is essential to know how you can remove the barrel from a upvc door to repair it or to replace it if needed.
relevant web page in removing the barrel from the lock is to loosen the screw that is holding it in position. This screw is usually set in the escutcheon and easy to locate since it's distinct from the other screws on the handle. After you've removed the screw, you can take off both the outer and inner handles and start to remove the door lock.
It's a good thing to keep a small screwdriver on hand, as it can be helpful during the removal. Take note of the location of each component as you take it apart. This will allow you to restore it to the original position. Before you continue, check for signs such as worn-out springs or parts that are rusty.
Install the new cylinder after removing the old one. The new cylinder will fit inside the lock if it's the correct size. It is recommended to examine the length of the spindle on the door handle to ensure you are installing the right cylinder. Then you can compare this measurement with the length of the spindle on your replacement cylinder to determine the correct size.
Changing your lock can seem intimidating, but it's actually quite simple. You'll also save money by doing the work yourself instead of hiring for a locksmith. Just be sure to follow the steps listed below carefully to ensure you don't end up damaging your door. If you're not a pro in this area, you may have to seek out a professional help.
Install the new cylinder
Once you have removed the old cylinder, you're now ready to install the new one. Make sure you choose the right size cylinder, so that it is able to fit in your door handle. You can play around with the cylinder by putting it in and turning it to both the right and left positions. If the cylinder has keyholes, you will have to align the keyhole with the lock body to allow you to insert the key easily.
Once the new cylinder has been installed it is time to screw it back into place. To do this, you'll need the screwdriver, and be sure not to cross-thread or strip it. Test the lock after the screw has been installed to see whether it's secured. If it's not locked, you may have to tighten the screws on the handle again.
UPVC door locks can experience a lot of wear and tear, particularly if they're used frequently. They are prone to a myriad of issues including the lock handle failing to function, or the key becoming stuck in the door lock. These problems can be solved by adjusting the locking mechanism.
If your uPVC door's handle is loose Try loosening the screws holding it. This may solve the problem, but if it doesn't then you should contact a locksmith or a specialist. They'll be able to repair or replace the handle and barrel of the lock.
You might be tempted by the thought of replacing the cylinder by yourself on your uPVC doors however, it is crucial to keep in mind that this job should only be carried out safely by an experienced locksmith. If you're not a locksmith, you may end with a damaged system and potentially compromising the security of your home.
It's also crucial to know whether you have a multi-point lock prior to you order your replacement cylinder. These locks are typically found on uPVC aluminum, uPVC and a few wooden doors. These types of locks can be fitted into the door with either hand therefore, you need to select the appropriate replacement lock cylinder for your door. Most commonly, they'll be bulb shaped cylinders with the key lock situated on the inside of the cam.
Install the lock
Replacing the cylinder of your lock on your uPVC doors is a good way to improve their security. However, you must be aware of the risks of snapping locks and it is recommended to employ an expert locksmith install the new locks. You won't have to worry about a burglar getting into your home.
uPVC door lock problems are very common, but the good news is that many problems can be fixed without the need to replace the entire door or handle. Euro cylinders that are unable to move or become stuck are the most frequent problem. This could cause the key to stop working. In some cases it is a simple adjustment all that is required, and this can be done easily by anyone with the proper tools.
It is first important to identify the kind of uPVC lock that is used to lock your door. You can usually find this information on the label of the manufacturer near the foot or head of your door. Once you know the manufacturer you can look for an appropriate replacement. It is also important to measure your cylinder in order to get the right size. To do this, you should take the measurement from the center of the circular part of the keyhole, to the center of the square spindle hole. This is known as the PZ measurement.
Once you've gotten your measurements, you can purchase the uPVC handle that is the same dimensions and shape of your cylindrical. Make sure that the handle is in line with the spindle length as well because that is what connects the handle. Next, remove the handle that was previously used and put in your new one. You may need to use pliers or screwdrivers in order to tighten the handle, but be careful not to over tighten it because this could cause damage.
Once the new handle is installed it is time to screw the long screw back. It can take a while to place the screw exactly where it needs to be to ensure that it doesn't get caught on something. After that, you can test your uPVC door to confirm that the lock is functioning properly.