How to Repair a Bad Patio Door Lock
A secure patio door is a crucial element of home security. It can be frustrating when yours is difficult to lock.
In most instances, a lock that is difficult to open is due to an incorrect alignment or simply wear and tear. It is possible to restore the lock's function by adjusting or lubricating the lock. If these methods of troubleshooting fail, you may replace the mortise lock and handle.
Clean and Lubricate
A door lock can be difficult to open and close over time because of dust, dirt and grime. Regular cleaning and lubrication could help to prevent your security device from becoming stiff or stuck. This will save you money in repair bills and extend the longevity of your door.
The first step in the process is to clean your lock the cylinder. Use WD-40 or a similar penetrating spray to complete this. Spray a small amount into the keyhole and work the key into and out to distribute the oil. Avoid using household solvents or other oils that can damage your locks, and make sure you spray some on the key itself as well.
After cleaning your lock's cylinder, it's time to grease. You can use a dry lubricant such as graphite powder or a silicone spray. Graphite powder is long-lasting and doesn't attract dust like liquid lubricants do, which is why it's a great choice to lubricate locks that are sticky. Silicone sprays are water resistant and can withstand both moist and freezing temperatures, but might require multiple coats to be effective.
You can also apply de-icer spray specifically made for cold weather. It will melt ice and frost on the mechanism of your lock. sliding door glass replacement will enable you to unlock your lock, and then unlock it with ease.
The climate will determine how often you need to belubricating locks. A coastal location exposes your door to salty air and cause corrosion, and temperature fluctuations can also affect the efficiency of your lock. It is recommended that you ensure that your locks are lubricated at least two times a year or more often when you live in an area with severe weather conditions. Lubricating your patio door locks will save money on repairs, and ensure that they continue to work properly for a long time.
Reposition the Lock Cylinder
If your patio door lock isn't functioning properly, it could mean that one or more of the components are damaged or misaligned. Regular inspections and prompt repairs of a faulty lock on your patio door will stop further damage and increase the security of your doors. You can fix a patio door that is locked or unlocked by tightening loose screws, altering the lock mechanism, or replacing the lock cylinder.
Begin by inspecting the exterior and interior of the lock to find signs of damage or misalignment. Often, patio door locks expand and contract in temperatures that are cold or hot and can shift slightly over time. This slight movement can cause the locking mechanism to not align properly and cause problems when opening or closing the patio door.
Then, check the lock cylinder for obstructions in the keyway hole. If the lock is corroded or blocked, the cylinder may be difficult to access, and could cause damage to the cam, latch springs, or the lock pins. If the cylinder isn't easy to insert, you might be able to remove any obstructions with the help of tweezers or a picklock. If the issue continues it may be necessary to take the cylinder out and disassemble it to locate the cause of the obstruction.
If the lock cylinder hasn't been screwed onto the body of the lock, it can be loosen by unscrewing the screw on the faceplate of the cylinder. This screw will let you rotate the cylinder, and may even help restore the proper alignment.
Look for a small tab that moves with the key. It is usually near the end. This tiny clip, also known as a "release Tab" is what stops the cylinder from sliding into the lock body in the entire way. A standard key can move this tab back to let the cylinder out and allow it to be removed and then reinserted.
If your lock's cylinder is stuck, you might be able restore proper alignment by turning it until the latch bolt is in contact with the strike plate, and the knob or handle can be pulled in and out. Reassemble the lock once you have restored the proper alignment. Test it to see if it works. If your patio door lock still isn't functioning properly it's likely that a different component, such as the latch or latch spring needs to be replaced.
Make sure you tighten the Screws
Over time, regular use temperatures, cold and hot weather dust, dirt, and can cause damage to patio door locks. If not properly maintained the delicate parts could wear down and cause your door to not lock properly. Most lock issues can be fixed with a few simple steps.
The first thing you have to do is clean the lock mechanism. Use a damp cloth to remove any dust or dirt that might be found. Then dry the lock thoroughly. After cleaning, a small amount of silicone-based lubricant can keep the moving parts operating smoothly and efficiently. Avoid lubricants that have oil bases as they can attract dust and other debris, which can cause further issues.
Next, if your patio door is equipped with a security foot lock, make sure the foot lock is properly aligned with the strike plate. In most cases, this will require you to adjust the screws that secure your foot lock to the frame of the patio door. To adjust the footlock, loosen the screw with the help of a Robertson screwdriver, and then gently push it up or down. Once the adjustment is complete you can tighten the screw.
When it comes to fixing the handle on a patio door, the most common problem involves misalignment between the latch and strike plate. This could be caused by wear and tear, or the latch could be placed higher or below what it should be.
Then, remove the handle from the old one and find the bolts or screws that hold it in the place. Make sure you keep track of these as you will need them when installing the new handle. Then, take off the old spindle and then slide the new spindle into position on the inside of the door, ensuring that it is aligned with the holes in the exterior and interior handles. Once the new spindle has been installed put back the handles on the exterior and interior to ensure that they are in alignment with the screws or bolts which hold them in place.
Once you've made any necessary adjustments to your patio door, be sure to test it by locking and closing the door. If everything is in alignment, the door will open and close without any additional force. If you're still having problems you may have to move your latch or strike plate or replace the lock cylinder.
Replace the latch

If your patio door locks aren't working, it could be time to replace the latch. The majority of homeowners can replace a lock themselves. Start by sliding the patio door completely open and removing the existing lock from the inside of the door. Examine the lock you have to determine the type of lock that you'll require.
Before installing the new latch, loosen screws that hold the strike plate. This is the portion of the lock that is mounted on the edge of the door's frame. Adjust it either horizontally or in a vertical direction so that it is aligned with the holes for the latch. After you've adjusted the strike plate, screw it back into its place and tighten the screws.
After all components have been repositioned or changed after which you can assemble and secure your patio door as instructed by the manufacturer. When you're done, test the latch to ensure that it fits and is able to catch the latch's hasp when your door is closed. If it does, then your patio door lock has been put in place correctly and is ready to give you the security and privacy that you've come to anticipate from.
Like other parts of your home, your patio doors need to be properly aligned for them to function efficiently. Over time, heat cold, dirt and debris can cause the hinges and door frame to shift. If these components are not aligned it's like trying to fit a key into the wrong keyhole it won't work. You can solve an issue that appeared impossible by following these easy steps. So give yourself a pat on the back for tackling this challenge and regaining your patio door's locked position! We'll bet you won't have any issues opening or closing the door from now to the end. Have fun! We're here to assist should you require assistance or have any questions.