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The Reasons You're Not Successing At Patio Door Lock Replacement
When It's Time For Patio Door Lock Replacement

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

The first thing to do is determine the type lock that you have. This can be done by observing the position of the keyway on the lock assembly. Certain keyways are vertical, while others are at a 45-degree angle.

Identifying your current lock

The patio door is among the most sought-after points of entry into homes for burglars. This is because it typically opens into an open or ventilating position. It is often situated in the back of the property making it easy to conceal an incline or other equipment for climbing. This makes securing your patio doors essential regardless of whether you wish to prevent children from leaving your property or deter a determined burglar.

To assist you in selecting the most suitable patio door lock replacement, you should familiarise yourself with your current locks. This will allow you to identify the kind of lock, its features and security level. This is an important step to consider before purchasing new hardware. It will ensure that the new lock is properly fitted and securely fastened.

In many instances you can determine what kind of lock you have by inspecting the exterior of your door's frame, or by looking inside the handle. You can also check the type of lock your door has, if it is equipped with a latch, or if it requires a key for activation of the lock.

The most commonly used lock in uPVC patio doors is a euro cylinder which is operated with an handle or the use of a key. The cylinder comes with an internal sleeve that keeps the pin in place and prevents it from being removed from the lock. The euro cylinder may provide some degree of security based on the manufacturer and if the lock has passed the accredited anti-snap tests, however here at SheffLOCK we always recommend a 3 star diamond certified TS007 ULTION euro cylinder because it provides more protection from the most recent methods of lock snapping.

A mortise is a steel locking system that is built into the frame. This kind of lock is available on both aluminum and wood patio doors. If installed correctly, they can be very safe as the bolt is embedded in the frame. This means that an intruder would have to cut the patio door frame or window sill to gain access to the lock.

Find out the width of your door

Patio doors are often the most vulnerable points of entry into your home, especially in the case of large quantities of glass installed. Installing locks that are of the highest quality can make your home more secure and could save you money on insurance. The main types of patio door locks are:

Depending on the style and functionality you're looking for there are a variety of various lock options to choose from. Some locks have bolts which twist, cylinders that utilize mortise and lock keys as well as locking systems that use a hook latch.

You can measure 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 the door frame (also called a jamb) and make use of the smallest measurement to determine the most suitable patio door lock.

Check This Out is important to measure the opening width before installing a patio door. This is the space that the patio door will fit in and the measurement you'll require from the manufacturer in order to purchase an entirely new one. If you're not sure the best way to measure, ask your supplier for advice or see our handy guide:

It is also important to determine the opening's rough height, but this isn't always easy as the floor of your house may not be level. You can measure in three locations, centre and both sides and note the smallest of these to get your height figure.

Once you have your measurements, you are able to select the lock that is appropriate for your door and home. You could also install an additional security lock to provide extra security against burglars, such as a Patlock handle lock designed to prevent the door from being opened even if it's locked or secured.

A central rail lock fitted with a key is the best option to ensure maximum security. This locks the patio door at multiple points and only requires one turn of the key. These locks provide a higher security and may reduce the cost of your home insurance.

Make sure you check the End-Face plate

You must be aware of the specifics of your existing lock to determine the best replacement. This will ensure that the new spindle and handle fit properly on the patio door, and that the new latch will fit in the latch hasp properly.

You can tell what type of mortise lock you own by looking at the faceplate at the end. This will allow you to identify the mortise locks you have. It is also important to note the screw size to ensure that you find a replacement that fits the screws you have already.

It is also important to take a look at the location of your existing keyway. There are numerous types of patio door locks. It is important to know what type of lock is 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 is too far from the frame, it will be difficult to catch in the latch hasp and the door won't close properly. This can be corrected by adding washers behind the latch keeper.

If you have an E2105 mortise lock the latch keeper should be about 1 inch from the edge of the frame. It is also possible to measure the size of the latch holder to confirm that it is at the correct level.

In most cases, the latch holder will be slightly higher than the keyway opening on your current lock. This is to ensure that it doesn't interfere with the operation of your sliding door.


If your latch keeper isn't at the right height you can lower it by inserting a screw or nut into the bottom of the keeper and tightening it. Do not overtighten the screw because it may cause damage to the lock mechanism and the door. If the latch holder on your door is too low you can raise it using screws or nuts on the top of the jamb on the door's keeper.

Make sure you check the screw holes

A lot of patio door locks utilize bolts for locking the door, while other locks use a key-operated cylinder. Both types of locks need regular maintenance to function properly. Lowe's has a variety of sliding glass door locks and hardware to secure your patio door. You can find a variety of lock styles, including bolts that turn and cylinder locks that make use of mortise and key locks with spring-loaded hook latch.

There are homeowners who have difficulty getting their patio door to lock because the latch has dropped or isn't aligned with the strike plate (also known as the jamb for the door). In some cases the issue could stem from minor shifts in the door or from water intrusion that has affected movable parts of the lock. In these cases, a little light oil might be all that's needed to get your door to lock once more.

Start by measuring the width and length of the lock you currently have. A ruler or tape measure can be used to accurately determine this measurement that will allow you to choose the lock replacement that is the correct size. Next, look at the end faceplate to determine if it is square or round. This is vital as it helps you select a new lock with the right screw hole type.

Also, you will want to note the location of the screw holes in your current lock. If the screw holes are on the top or at the bottom of the leading edge, then an extended bolt is required. Installing a tamper-proof lock with a screw that cannot be removed is an alternative.

The process of installing the lock is simple once you've selected the lock that's ideal for your door. It is recommended that you seek professional assistance when you aren't sure about installing a patio lock. A seasoned locksmith or door hardware specialist will be able to provide expert guidance and advice as well as make sure that your lock is properly installed. Your patio door locks could be a reliable security feature for you and your family members if they are maintained properly.

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