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How to Troubleshoot and Repair Patio Door Locks

Keep your patio doors in good working condition to protect your home from unwanted intruders. The elements can cause damage or misalignment to your patio doors repair doors and their locks.

You can fix your patio door lock by yourself if it is not working properly. These steps can fix issues with the handle, keyway and latch.

Check the lock

Patio doors are often targeted by burglars because of their large amount of glass and convenient position within a house. A lock that is functional and secure is important to ensure your home's security. There are easy methods to repair patio door locks that have stopped functioning.

First, inspect the lock to ensure there is nothing blocking it from latching or locking. You should address any issues you find like loose screws or corrosion. In some cases, a slight adjustment to the patio door's position may suffice to resolve the problem.

Dust or debris can also cause the lock mechanism not to function properly. Clean your patio door and wipe down all lock hardware regularly to prevent this. You can apply a mild detergent solution if necessary, but always be sure to dry the lock completely afterward.

In addition, it is an ideal idea to lubricate the lock regularly. The moving parts inside your uPVC patio lock are similar to those in a precision-tuned machine. They can jam or become stuck as with any mechanical device. A graphite pencil, or a tiny amount of lubricant, can be used to get rid of any dirt or debris from the lock's cylinder. This will help keep it functioning smoothly.

Knowing the exact dimensions of your patio door lock is also crucial. This can help you find a replacement lock that aligns perfectly with the current mechanism. If you're not sure how to go about this, it is advisable to talk to an expert tradesperson or locksmith for help.

Clean the Lock

Over time, cold and hot weather dust, dirt, and even dust can cause the intricate components of the door lock to become stuck. These issues could compromise your home's security. But it's easy to fix these problems If you know how.

Before you attempt any repairs, clean your lock. Utilizing a damp, clean cloth, wipe away any stains or debris that could hinder your lock from working correctly. Then, use a little hot soapy water to wash the mechanism of your lock and wash away any grit or grime that has built up over time. Dry your locks completely after cleaning them.

Most patio doors are secured by a mortise locking system. This is a secure lock but can develop issues with time. If your uPVC lock has become stuck, the first step is to clean and lubricate it. For the uPVC lock, you can start by cleaning the latch plate using a small amount of soapy water. The next step is to loosen the screws that keep the latch in the position. After you have removed the latch handle and plate then you can take it from its slot on the door frame.

After the latch has been removed and the latch is lubricated, you can apply lubrication to the lock with a light engineering oil like WD40. If you don't have WD40 then a graphite pen can be used to clean dirt and grit from the mechanism. If your uPVC lock still doesn't work it may be necessary to relocate the lock cylinder. This requires additional tools and is best done by a professional. You can practice repositioning the cylinder without having to remove it from the door. Open and close the door while the cylinder is in lock position. Then make pencil marks on the frame where the screws holding the locking cylinder are.

Lubricate the Lock

If your lock is clean of dirt and debris it's a good idea to lubricate the keyhole as well as the locks themselves. A good lubricant will keep your lock in good shape and extend its lifespan.

Dry graphite powder is excellent to lubricate small metal parts like locks since it's not sticky or oily and lasts for longer than liquid lubricants. It's easy to apply and you can use it on sliding doors, door hinges, and garage door tracks. Master locksmith Shawn Fago recommends using a pencil-type graphite lubricant that is specifically designed for lock cylinders.

Liquid lubricants are more effective than graphite particularly in humid climates. Silicone lubricants resist water and do not attract dirt and dust as much as other liquid lubricants. They work well in high and low temperatures. Some silicone lubricants can accumulate over time, and displace other lubricants you've used.

Teflon-based lubricants can be a great alternative to silicone lubricants because they last for a long time and don't attract dust and dirt. They are also great for cold conditions, since they prevent the build-up of ice within the lock.

If your lock cylinder feels stiff and difficult to turn, it's probably worn out. It's going to need to be replaced. A professional locksmith will disassemble the lock mechanism and replace it with a new cylinder matched to your existing keys. They can also perform repairs and modifications to existing locking mechanisms. A professional can replace the lock cylinder if your door does not have one. This can increase safety and security. They can also install new lock faceplates on your patio door that are in keeping with the rest of the door.

Reposition the Lock Cylinder

If cleaning it and lubricating it does not work, the problem could be that the latch on the door isn't aligned correctly with the frame or jamb. To test this you need to open the sliding patio door frame repair door and sight up and down from the opening of the latch to determine whether the door is in line with the jamb or frame. If not, loosen the screws that hold the latch body and adjust it up or down until the latch is able to catch the latch hasp tightly when the door is shut.

The latch may also be difficult to close as the cylinder is worn. It is necessary to replace the cylinder if the worn cylinder is making it difficult to turn the key. It's important to choose the new cylinder that's the same size as the previous one and has the same keyway, which means you can easily replace it by simply screwing the two parts of the lock apart and then inserting the new cylinder.

Many home improvement stores sell replacement cylinders. You'll be required to know the name and model of your existing cylinder in order to buy one that is compatible with it. If you don't know the model and manufacturer, take a photo of the cylinder and its mounting screws. Then visit your local hardware store to seek assistance.

Once you have a new cylinder, loosen the screw with a flat head that holds it in place, and remove the plate that holds it in place. 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 to ensure you do not lose it. Then, loosen the set screw on the cylinder's keep (the metal part that fits into the rectangular cutout of the door) and then loosen it enough to allow the cylinder to rotate.

Replace the Lock

A patio door lock that isn't functioning properly could be a major risk to your security. Dirt and debris could get caught in the lock mechanisms. If this issue isn't treated promptly, the lock will eventually stop working and no will be able to provide security. Replacing the patio door lock is a relatively easy DIY project that requires just some tools and a small amount of time.

Begin by examining the lock and determining the cause of the problem. If cleaning and lubricating the latch fails it could be bent too far to function properly. In this case, it would be best to replace the latch with a brand new mortise lock to ensure that it's as sturdy and secure as is possible.

If you're not comfortable with this DIY task yourself, consult with an expert locksmith or door hardware expert to help you with the installation of a new lock. They will have all the tools and experience to properly install the lock.

Maintaining your patio door lock repair door lock in good working condition is a matter of routine maintenance. Verify that the knobs and handles aren't loose and tighten them if necessary. Lubricate your lock at least once per year to avoid it getting stuck or becoming stiff. Locks that have been subjected to heavy use or extreme temperatures should be lubricated regularly. The type of lubricant is vital, so be sure to select one that's specifically designed for use on locks (GT85 or WD-40's Specialist Friction Dry PTFE). For the best results apply the lubricant direct onto the key hole in the lock mechanism.