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How to Troubleshoot and Repair Patio Door Locks

Keep your repairing patio doors doors in a good condition to safeguard your home from unwanted intruders. The elements can cause misalignment or damage to the patio doors and their locks.

If your patio door lock does not operate properly, you can make some basic repairs at home. These steps will resolve issues with the latch, keyway and handle.

Check the Lock

Patio doors are frequently targeted by burglars because of the large amount of glass and their convenient location within a home. It is essential that your locks function properly to keep your home safe. There are a few easy ways to repair patio door locks that have stopped functioning.

The first step is to examine the lock to ensure nothing is preventing it from locking or latching. If you notice any issues, such as loose screws or rust, or the wrong alignment, these must be addressed immediately. In some cases the slightest adjustment to the door's location could be sufficient to fix the issue.

Dust or debris can also cause the lock mechanism to perform as it should. Clean your patio door and clean the lock hardware frequently to prevent this. You can use a mild detergent solution when needed, but be sure to dry the lock completely afterward.

In addition, it's a good idea to lubricate the lock on a regular basis. The moving parts of your uPVC patio lock are similar to those used in a finely tuned machine. They are susceptible to jamming and become stuck as with any mechanical device. Using graphite pencils or light lubricant can help to dislodge any dirt or debris that has accumulated within the lock cylinder and help keep it running smoothly.

The exact dimensions of your patio door lock is important. This can help you find the right lock replacement that fits perfectly with the existing mechanism. If you aren't sure how to do this, it's advisable to speak with a locksmith or professional tradesperson to get help.

Clean the Lock

The intricate parts of the door lock could jam up over time because of dirt, dust, and hot and cold weather. These issues can affect the security of your home. But it's easy to fix these issues if you know how.

Before attempting any repairs, you must first clean your lock. Wipe away any stains and debris using a damp cloth. Make use of hot soapy water and a small amount of grit to clean the mechanism of your lock. After you've cleaned your locks, allow them to dry completely before using them again.

The majority of patio doors are secured with mortise locking mechanisms. This is a secure lock but can develop issues in time. If your uPVC lock is stuck the first step is to clean and lubricate it. For the uPVC lock you can begin by cleaning the latch plate with a bit of hot soapy water. Next, you'll want to unfasten the screws that secure the latch body in place. After you have removed the latch plate and handle then you can take it from its slot on the door frame.

Once the latch is removed and lubricated, you can apply using a light engineering lubricant like WD40. If you don't have WD40, you can also use graphite pencils to help get rid of any dirt or grit within the mechanism. If your uPVC lock isn't working it is possible to relocate the lock cylinder. This requires additional tools and should be done by an expert. You can practice repositioning a cylinder without having to remove it from the door. Open and close the door while the cylinder is in the lock position. Make pencil marks on the frame inside the area where the screws that support the locking cylinder are located.

Lubricate the Lock

Once your lock is clean and free of dirt and other debris, it's time to lubricate both the keyhole and the locks themselves. Using the correct type of lubricant will keep your lock in good condition, and extends its life.

Dry graphite is a fantastic way to lubricate small metal parts, such as locks. It's oil-free and non-sticky. It is also longer-lasting than liquids. It's easy to use and can be used on sliding patio doors repair doors tracks for garage doors and door hinges. Master locksmith Shawn Fago recommends using a pencil-like graphite lubricant specifically designed for lock cylinders.

Liquid lubricants can be more effective than graphite especially in humid climates. Silicone lubricants resist water and won't attract as much dust and dirt as other types of liquid lubricants. They are effective at both low and high temperatures. However, some silicone lubricants can cause the formation of a buildup over time, and may be displaced by other lubricants that you've used.

Teflon-based lubricants can be a great alternative to silicone lubricants because they last longer and do not attract dirt and dust. They're also excellent for cold climates, since they can prevent ice buildup inside the lock.

If your lock's cylinder feels stiff and difficult to turn, then it's likely to be worn out. It's going to need to be replaced. A professional locksmith can dismantle the lock mechanism, and then install the cylinder of a new model that matches the keys you have. They can also make repairs and adjustments to existing lock mechanisms. A professional can replace the lock cylinder if your door isn't equipped with one. This will increase safety and security. They can also install new lock faceplates on your emergency patio door repair door that are in keeping with the rest.

Reposition the Lock Cylinder

If lubricating the lock and cleaning it doesn't perform, the issue could be that the door latch isn't aligned with the side jamb or the frame of the door. To check this open the sliding patio door and look upwards and downwards from the latch opening to see whether the door is aligned with the frame or jamb. If not, loosen the screws holding the latch body and adjust it either upwards or downwards until the latch is firmly catching the latch hasp when the door is closed.

The latch is also sometimes difficult to close as the cylinder has worn out. A worn cylinder makes it hard to turn the key, so you'll need a replacement. You should select a cylinder with the same keyway and dimensions like the one that came before it. This will allow you to change it quickly by unscrewing the two halves and putting in the new cylinder.

Many home improvement stores carry replacement cylinders. You'll need to know the brand and model of your existing cylinder so you can buy one that is compatible with it. If you don't know the model or manufacturer, take a picture of the cylinder along with its mounting screws. Then go to the local hardware store for help.

If you have a brand new cylinder, unscrew the screw with a flat head that holds it in place, and remove the escutcheon plate. Make use of a screwdriver to remove the lock cylinder, escutcheon plates and lock from the door and door frame. Put the screw somewhere safe so you aren't able to lose it. Then, loosen the set screw on the cylinder's keep (the metal part that fits into the rectangular cutout in the door) and loosen it enough to rotate the cylinder.

Replace the Lock

A patio door lock that isn't functioning properly could be a major risk to your security. It's not uncommon for dirt and debris to become lodged in the lock's mechanisms If this isn't addressed quickly enough the lock could eventually fail and no longer provide security. Replacing the patio door lock is a easy DIY project that requires just some tools and a bit of time.

Begin by looking at the lock to see what's causing the issue. If cleaning and lubricating the lock latch doesn't work it could be bent too far to function properly. If this is the case, you should replace the latch with a mortise locking system to ensure that it's as strong and secure as it can be.

If you're not confident in tackling this DIY project on your own contact a locksmith or door hardware specialist to help you with the installation of the new lock. They'll have the equipment and know-how to install the lock correctly.

Keeping your patio door lock in good condition is a matter of regular maintenance. Check that the knobs and handles aren't loose, and if they are tight, tighten them when needed. Lubricate the lock at least once per year to keep it from sticking or becoming stiff. It is recommended that locks that are subject to heavy use or extreme weather should be lubricated more frequently. It is crucial to choose a lubricant that has been specifically designed for locks (WD-40's Specialist Dry PTFE Anti Friction or GT85). Apply the lubricant to the keyhole of the lock mechanism to get best results.