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Replace the outer door lock

cerraduras para puertas

The cover » Replace the outer door lock

Replace the lock on an exterior door it’s easy if you follow our step-by-step explanation. It is much easier than changing the lock of an armored door.

Guide to changing the exterior door lock step by step

Often the door that needs a lock change the most is the exterior door.

door locks


Because they are the ones that open the most and the most exposed to the elements: cold, humidity, rain, snow, heat. The handle can even break.

All these factors cause the lock to heat up or damage its mechanism.

Not to mention the fact that sometimes the locking of the outer door is forced of perpetrators who want to invade private property.

It is therefore not surprising that forcing is one of the main causes for which a change of the lock on the outer door is required.

change the outer door lockReplace the outer door lock

It is already known that there are different forms of forcing exterior doors, whether they are wooden, metal or armored doors they can be violated.

The perpetrators can use impact wrenches, locks or any other tool to force the lock and enter without our consent.

A good way to avoid these unwanted episodes is by changing the lock and here’s how.

What is needed to change the exterior door lock

tools you need to change the lock of an exterior door they are almost always the same.

So, whether your door is made of wood, metal, armored or high security, the tools you will need are:

  • New lock.
  • Flat and grooved screwdrivers.
  • Rigid brush for brushing.
  • Graphite powder.
change the inner door lockReplace the inner door lock

Change the exterior door lock step by step

You have all the tools at hand, because we want the process of changing the exterior door lock to be smooth and uninterrupted.

Step 1, unlock the handle of the old lock

In this step, we will make sure that you remove the outer components of the old lock, such as: handles, handles or knobs, both inside and outside, as well as the finishing plates of each handle.

  • We open the door.
  • Unscrew the latch, the position of the screws of each button varies from door to door.
  • We remove the door handle on both sides of the door, some can be removed and others unscrewed.
  • We remove the assembly plates which are the ones that separate the latch from the door panel and hide part of the locking mechanism.
change the locking cylinder

Step 2, remove the old lock

Once we have removed the handle on each side of the door and its plates, we will have to remove the old lock.

Some locks are fixed only with a pair of screws on the edge of the door, these are two large head screws, the type of screwdriver you will use may vary.

On the other hand, other locks also have a second group of screws that must have been exposed when removing the locking plate.

In any case, it is always advisable to start with the screws on the edge of the door.

  • We locate the screws on the edge of the door that hold the lock mounted, some are fixed with flat head screws and sometimes with cross-head screws.

We take out the lock. If it comes out, we won’t have to unscrew anything else.

change the door lockReplace the door lock

On the other hand, if in your case, after removing the screws from the edge, the lock does not give way, it is due to the fact that there is another screw that holds it, you have to locate it and unscrew it.

Step 3, install the new lock on the outer door

With the free space, the next thing will be to install the new lock, before installing the new mechanism, it is advisable to clean the space.

  • We’re cleaning the lock and we make sure that there is no rust, wood or metal chips or anything else that could prevent the installation of the new lock. It usually happens that because they are exterior door locks, due to the action of the elements, they usually have rusty parts. For this, it is best to use a stiff brush, such as those used in blacksmithing.
  • We apply graphite, after cleaning them it is advisable to apply a little powdered graphite if the opening and the spaces that the old lock occupied had a lot of rust. With graphite in powder form we slow down the oxidation process of the new lock a bit.
  • We install the new lockIf the new lock has the exact dimensions of the previous lock, we would have no problem in this step. All we have to do is put it in the opening and make sure it fits easily.
  • We screw the new lock, it is best to use new screws and discard the old locking screws, which must be rusty.
  • We’re testing the new lock, We find the new key and turn it to make sure the mechanism works.
bedroom door locks

Step 4, fix the latch again

With the new lock fixed and screwed in place, what remains is the installation of the latch.

  • We clean the latch if it has rust and dirt, it is best to clean it before installing it, on the one hand it would guarantee a greater durability of the components of our exterior door and, on the other hand, for an aesthetic problem except in the case of a front door should not be neglected.
  • We install the latch, fix it with its screws and make sure that everything works as a whole.

With these four simple steps we managed to change the lock of an exterior door.

sliding door lock

The procedure may vary slightly depending on the model of the door, but applying the same basic principles you can change any external lock without having to call the locksmith.

Recommendations for changing the exterior door lock

Something that happens very often when replacing a lock is that the replacement lock has different measurements than the old lock.

To avoid this, it is better to disassemble the lock and take it to the locksmith As it looks.

rim locks

This can have some difficulties, as it is a lock on an exterior door, which would mean leaving the door exposed.

An alternative is to take photos with your mobile device and take measurements.

The idea is to get new lock to be exactly the same, at least in size and in the arrangement of the screws, to the lock we want to change.