When It's Time For Patio Door Lock Replacement
If your patio door lock doesn't work properly, it may be the time to replace it. It's a fairly simple process.
The first thing you need to do is identify the type lock that you have. This can be done by observing the location of the keyway within the lock assembly. Some keyways are vertical, while others have an angle of 45 degrees.
Identifying the lock you have
The patio door is a frequent point of entry for burglars. This is because it usually opens to an open or ventilating position and is often located behind the home, making it simple to hide an incline or other climbing equipment. This makes securing your patio doors crucial regardless of whether you wish to prevent children from leaving your property or deter a determined burglar.
To help you choose the ideal replacement for your patio door lock, you should be familiar with the locks you have. This will allow you to identify the kind of lock, the features and security level. This is a good step to take prior to shopping for new hardware as it will ensure that your new lock is perfect and is securely secured.
It is often possible to identify the kind of lock by looking at the outside of the door frame or the inside of the handle. You can also look at the locking mechanism of your door, whether it has a latch and if a key is required to open it.
The most commonly used lock on uPVC patio door is a euro cylinder which can be operated by a handle or a cylinder key. The cylinder is equipped with an enclosure that holds the pin inside and keeps it from being removed from the lock. The euro cylinder offers an appropriate level of security, based on the manufacturer and whether the lock has passed accredited anti-snap tests, however here at SheffLOCK we always recommend a 3 star diamond certified TS007 ULTION euro cylinder because it provides greater security against the most modern methods of locking snapping.
A mortise lock is a steel lock that is incorporated into the frame of the patio door. This style of lock is found on both wood and aluminum patio doors. They can be very secure if they are installed correctly since the bolt is embedded into the frame and the intruder has to cut through the frame of the patio door and window sill in order to gain access the lock.
Take a measurement of the Width of Your Door
Patio doors are typically the most vulnerable points of entry into your home, particularly when they have a lot of glass. Installing locks that are of the highest quality will ensure your home is secure and could save you the cost of insurance. Patio door locks are mainly of two types:
There are a myriad of lock options depending on your design and functional requirements. Certain locks come with bolts that twist, cylinders that utilize mortise and lock keys, and locking systems that use hook latches.
You can determine the thickness of your current patio door using a tape measure to run along the edge of the door and record the measurement. You can also measure the thickness of your door frame (also called jamb) and take the smaller measurement to determine the most suitable patio door lock.
If you're planning to install a brand new patio door, you must take a measurement of the rough opening width. This is the area that the door will fit into, and it's the size that the manufacturer must have to provide you with a brand new door. Get help from your supplier or refer to our guide if you're unsure what measurement to take.
You should also determine the approximate height of your opening, but this isn't always easy since the floor of your house may not be level. You can take measurements in three locations, the centre along both sides, and the corners, and then take the smallest measurement to get your height.
Once you've gotten your measurements, you are able to select the lock that is appropriate for your home and door. Installing an additional security locking system will give you additional security from burglars. For example the Patlock handlelock is designed to stop the door from being opened if not locked or latched.
For maximum security for maximum security, a central rail key-operated lock is a good option. This locks the patio door at multiple points and only requires one turn of the key. These offer a much higher level of security than standard locks and should result in a reduction in your home insurance premiums.
Check the End-Face Plate
When you are ready to replace the handle on your patio door, you need to identify the particulars of the lock you currently have to choose the right replacement. This will ensure that the new handle and spindle are a perfect fit for the patio door and that the new latch is able to hold the latch's hasp.
First, examine the end-face plate to determine whether it is round or square. This will allow you to determine what mortise lock you are using. It is also important to take note of the screw's size to ensure you find a replacement that fits your current screws.
You should also examine the position of your existing keyway. There are a variety of patio doors locks. It is important to know what type of lock comes with to match it to the correct keyway opening.
Examine the latch keeper on the edge of the jamb of your door. If the latch keeper on the door jamb is too far behind, it will be hard to get the latch hasp in place. The door won't close properly. This can be corrected by putting washers behind the latch keeper.
If you have an E2105 mortise lock the latch keeper must be at least 1 inch from the edge of the frame. You might also want to take a measurement of the height of the latch holder to ensure it is at the correct level.
In most cases, the latch holder will be positioned slightly higher than the lock's keyway. This is to ensure that it does not interfere with your sliding door's operation.
If the latch keeper is too high, you can lower the height by tightening the screw or nut on the bottom. You should not overtighten the screw or nut as it could cause damage to the lock mechanism and the door. If the latch holder is too high you can raise it by tightening a nut or screw on the top of keeper on the jamb.
Make sure to examine the screw holes

Many patio door locks use locks bolts to secure the door, whereas others are operated by a key. Both types of locks require regular maintenance to ensure they function properly. To ensure the security of your patio door, Lowe's offers a wide variety of sliding glass door hardware and locking solutions. You can choose from a wide selection of lock styles including bolts with twist, cylinder locks with keys and mortise locking systems that have a hook latch.
Certain homeowners are unable to lock their patio doors due to the latch has fallen down or is not aligned with the strike plate. In replacement upvc door locks could be caused by small shifts in the door or water intrusion which has affected the movable parts of your lock. In these cases, a small amount of light oil could be all it takes to get the door to lock.
The best way to begin is by measuring the width of your current lock. A ruler or tape measure can be used to measure this measurement and allow you to choose the lock replacement that is of the right size. Next, look at the faceplate on the top to determine if it is square or round. This is vital as it allows you to select a new lock that has the right screw hole.
Also, you will want to note the location of the screw holes on your current lock. If they are located at the top or bottom of the leading edge then a replacement with an extended bolt will be necessary. Installing a tamperproof lock with non-removable screw is another option.
After you have selected the kind of lock that is best suited to your door, the process of installation is fairly straightforward. It is always recommended to get help from a professional in case you are uncertain about the installation of an outdoor lock. A seasoned locksmith or door hardware expert will be able to provide professional guidance and advice as well as make sure that your lock is properly installed. Your patio door locks can be a reliable security device for you and your family if they are properly maintained.