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Patio Door Lock Replacement: It's Not As Difficult As You Think
When It's Time For Patio Door Lock Replacement

If your patio door lock isn't operating properly, it may be time to replace it. It's a fairly easy process.

The first step is to determine the type of lock you have. This can be done by observing the position of the keyway on the lock assembly. Some keyways are vertical, while others are bent at 45 degrees.

Identifying the lock you have

The patio door is one of the most targeted points of home entry for burglars. This is because it typically opens into an open or ventilating position, and is often located behind the house, making it easy to conceal an incline or other equipment for climbing. It is crucial to ensure the security of your patio door whether you want to prevent children from leaving the home or deter an intruder.

You should be familiar with the locks that you currently have to help you choose the best replacement patio door lock. This will help you identify what type of lock you have, what features it comes with and the type of security it offers. This is a great step to do before you start looking for new hardware as it will ensure that your new lock is perfect and is securely fastened.

You can usually identify the kind of lock by looking at the exterior of the door frame or the inside of the handle. You can also examine the mechanism that locks your door to determine if it has a latch, and whether a key is required to engage it.

The most commonly used lock in uPVC patio doors is a euro cylinder that operates with either a handle or the use of a key. The cylinder has a sleeve which holds the pin in place and prevents it from being removed from the lock. The euro cylinder can offer a certain level of security based on the manufacturer and if the lock has passed a reputable anti snap testing but here at SheffLOCK we always recommend a diamond 3 star accredited TS007 ULTION euro cylinder because it provides more protection against the latest methods of snapping locks.

A mortise lock is a steel lock that is incorporated into the frame of the patio door. This kind of lock can be found on both aluminum and wood patio doors. They can be extremely secure if installed correctly, as the bolt is embedded into the frame and the intruder must cut through the frame and window sill to access the lock.

Find the Width of Your Door

Patio doors are often the most vulnerable entry points into your home, especially when they have a lot of glass installed. A good quality lock will ensure your home's security and may even reduce the cost of your insurance policy. Patio door locks are typically of two types:

Based on the style and function you're seeking, there are many different locks available. Some have bolts that twist or cylinder locks that employ mortise and key locks with spring-loaded hook latch.


You can determine the thickness of your current patio door using a tape measure to run across the entire length of the door and then record the measurement. It is also a good idea to determine the thickness of the door frame (known as a jamb) in various places and then use the smallest figure to determine which patio door lock type is the most suitable for you.

If you are installing a new patio door, you must measure of the opening width rough. This is the space that the door will fit into and is the measurement that the manufacturer will require to supply you with a new door. Ask your supplier for help or consult our handy guide if you're not sure what measurement to take.

It is also important to measure the height of the opening. However, this may be difficult when your floor isn't level. Try measuring in three places, including the on both sides and the centre and then record the smallest measurement to calculate your height.

Once you have your measurements, you can choose a lock that fits your door and home. You could also install an additional security lock to give you extra security against burglars like a Patlock handle lock, which is designed to prevent the door from being opened even if it's locked or latched.

For the highest level of security for maximum security, a central rail key-operated lock is a great option. This locks the patio door at several points and only requires one turn of the key. door lock repairs offer a much higher level of security than standard locks and will result in a reduction in your home insurance premiums.

Check the End-Face Plate

You need to know the precise details of your existing lock to choose the right replacement. This will ensure that the new handle and spindle are a perfect fit on the patio door and that the new latch is able to catch in the latch hasp.

The first step is to examine the face plate at the end to determine if it's round or square. This will allow you to determine the type of mortise lock you have. It is also important to take note of the screw's diameter to ensure you find an appropriate replacement for the screws you have already.

It is also advisable to examine the location of your current keyway. There are many different types of patio doors locks. It is crucial to know which type your lock has in order to match it to the correct keyway opening.

Examine the latch keeper at the edge of the jamb of your door. If the latch keeper is too far away it's difficult to catch in the latch's hasp and the door will not close properly. This can be corrected by putting washers behind the latch keeper.

If you own an E2105 mortise lock the latch keeper must be approximately 1 inch from the edge of the frame. You may also want to measure the size of the latch holder.

In most cases, your latch holder will be positioned slightly higher than the lock's keyway. This is to make sure that it does not interfere with the sliding door's operation.

If your latch keeper isn't at the correct height, you can lower it by inserting an nut or screw into the bottom of the keeper and tightening it. Do not overtighten the screw as it could damage the lock mechanism and the door. If the latch holder is too tall, you can raise the latch holder by tightening a nut or screw located at the top of keeper on the jamb.

Be aware of the screw holes

Some patio door locks use bolts to secure doors, while others use keys-operated lock cylinders. Both kinds of locks require regular maintenance to ensure they function properly. Lowe's offers a wide selection of sliding glass door locks and hardware to secure your patio door. There are a variety of lock styles, such as bolts that twist and cylinder locks that make use of mortise locks and keys with spring-loaded hook latches.

Some homeowners are unable lock their patio doors due to the latch has fallen down or is not aligned with the strike plate. In some instances the problem could result from small shifts in the door or water intrusion that has impacted the moveable parts of the lock. In these instances, a small amount of light oil may be all that's needed for the door to lock.

The best way to begin is by measuring the width of your existing lock. A ruler or tape measure can be used to determine this measurement, which will let you select an alternative lock that is of the right size. After that, examine the end faceplate to determine if it's round or square. This is crucial as it allows you to choose the lock that is suitable for you by using the correct screw hole.

Also, you will want to take note of the location of the screw holes on your current lock. If they are at the top or bottom of the leading edge, then a new lock with an extended bolt will be required. Another alternative is to install a secure tamper-proof lock using screws that aren't removable.

After you have selected the kind of lock that is most suitable for your door, the process of installation is fairly straightforward. If you're not comfortable installing the patio door lock yourself it is highly recommended to seek assistance from a professional. A professional locksmith or door hardware specialist can provide expert advice and make sure that the lock has been installed correctly. With proper care your patio door locks will prove to be a reliable and effective security feature that will protect you and your family secure from intrusions.

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