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Over time, the wear and tear could cause lock malfunctions. There are a few easy steps you can follow to ensure the security of your uPVC door.

Whether it's realigning the lock or cleaning the mechanism for locking, these quick fixes can make your home more secure.

Clean the Lock

Although patio doors are a great way to bring the outside in and keep the elements out, they can also be an issue for security if your lock isn't working as it should. Over time, wear, tear, hot and cold weather, dirt, and debris can cause your patio door lock to become difficult to operate. Fortunately, with some minor maintenance you can make sure that your patio door's locks always function properly.

In the beginning, it's crucial to clean your patio door's lock and all its moving parts. This will help get rid of any grime and coatings that could be preventing the lock from functioning in the way it should. Start by wiping all the moving parts of the lock for your patio door with an aqueous cloth. Then apply a scouring pad or rough damp cloth to scrub the dirt-infested parts of the frame and door. Then, wipe the entire lock with a dry cloth to remove any remaining dampness and let it to air dry prior to applying it to the next time.

If you have an outdoor door that has a pin tumbler latch mechanism it is possible to apply lubrication to the lock by applying powdered graphite to the key or applying a Teflon-based lubricant like WD-40 Multi-Use. This type of lubricant can be easy to apply and it won't disintegrate with time. If you're unable to find the right lubricant for your lock, you can make use of a pencil with a thicker tip. Place the pencil into the lock, and shake it to distribute the graphite.

Regular maintenance is also necessary to keep the tracks of sliding patio doors free from dirt, dust and debris. These tracks are especially susceptible to snow, ice, and other debris that can cause them jam or bind. This could make it difficult for your patio door to open and close.

Clean the track rails and rollers of sliding patio doors by removing weather stripping that is dirty or damaged. Clean it, then replace it. The rollers of patio doors can be cleaned and sprayed down with an oil that is non-stick.

Lubricate the Moving Parts

uPVC French Doors, like sliding patios, are operated with 3 to 4 or sometimes 5 points locking mechanisms. This includes the lock cylinder and handle which is operated by the key. These doors also need maintenance, including lubrication of the moving parts. This can be done using an oil that is thin, but never WD40. This should be done every year, at a minimum.

If hinges that are sagging aren't the reason, the door could be skewed and catch or hitting the strike plate hole in the frame. The solution is to take off the strike plate and then use an abrasive chisel, which will enlarge the mortise that it rests in. This will permit the latch to fit into the hole and also prevent it from rubbing against the frame.

Measure the width of the cylinder with an object of wood or a book that is able to fit into the space above the adjustment screw. The outer dimension is measured from the outside of the door to the center of cylinder. The inner dimension is measured from the center adjustment screw to the end of the of the cylinder.

Check the lock's length

If your patio door latch isn't able to turn, even after cleaning and lubricating, it's possible that it's not in alignment with the strike plate hole. Verify that the door is properly balanced and that the hinge screws are secure. In a lot of instances, moving the strike plate downwards or upwards could solve the issue.

The latch might not work properly when the strike of the lock is not large enough. In patio door sliding smoothly , you can widen the opening with the hammer and chisel. Then, test the latch so that it doesn't rub against the jamb frame of the door or get caught on it.

Before purchasing a new lock, it is important to determine what kind of mortise lock you currently have. You can do this by looking at the faceplate on the lock and determining if it is square or round. Look at each screw hole on the existing lock and note the size. This will help you to locate the replacement lock that has exactly the same size and fits into the hole you have already.

In addition to identifying the mortise lock that is currently in use, you should also examine it for any scratches or bends that may require repairing. A badly damaged or bent latch is more likely to break than one that's been utilized often, so make sure to replace the lock with a new one that is secure when you spot any indications of damage or wear.

Once you've decided on the kind of lock replacement you require It's time to begin the actual repair. The spindle and handle must be removed from the patio door. Install the new handle. Begin by installing the handle in the interior by aligning it with the spindle, and then securing it in place with the two bolts or screws that hold it. Install the exterior handle following the interior handle. Once you have completed these steps Test the handles to ensure that they are able to open and close easily and that the latch works correctly with the strikeplate.

Check the door's Strike

The door latch and strike plate are the two components of the lock that work to ensure that the latch locks the door. An incorrectly aligned strike plate and door latches will result in the latch not being able to latch the door in a proper manner. This problem is usually very easy to fix.

Examine the holes that receive the strike plate to make sure they are clear of obstructions like dirt or plastic plugs. Then loosen the screws that secure the strike plate in place and allow it to move vertically, but not removing it from the door frame. Adjust the strike plate to align its holes for receiving with the latch hooks of the door latch. After the strike plate has been adjusted, tighten all screws and test to see whether the door shuts smoothly.

Door strike plates can be difficult to access for homeowners with sliding patio doors, however they are essential to lock and unlock your door. These plates are usually located at the top and bottom of the door jamb, where they support the door's latch. The door latch slides into the strike plate to create a seal when closed. If the strike plate is damaged or rusted, or if it is not installed correctly the latch may not be able to lock the door properly.

A misalignment between the strike plate and latch is the most common reason for the patio lock not to close or remain in place. This can be confirmed using the "lipstick" test. Apply some lipstick along the edge of the deadbolt. Then cover it with masking tape. The lipstick will leave an impression when you shut the door. This will show you exactly where the latch meets the strike plate. If the mark is too high or low, you can easily adjust the strike plate.





If your sliding patio door locks aren't working correctly, they can keep your home secure from intruders. You must fix this problem as soon as possible. Follow these simple steps to fix your patio door lock and restore its functionality.