How to Lock a Door Without a Key

How to Lock a Door Without a Key

You may find yourself in a situation where you have lost your keys or your lock has broken but you still want to be able to lock the door. Whilst it will be hard to secure your door from the outside, there are different ways you can secure the door while you’re still in the house.

So, what can you do to secure your home and property without a key? Read through below!


Use a Wedge

Not only is it one of the easiest methods to use to lock your door without a key, but also one of the cheapest, which is why it’s a good method to try. You simply place a wedge under the door from the inside which then restricts the doors movement. Very simple to set up and it works great to block your doors from being opened, however, it won’t work long term and if someone makes repeated attempts to get in then it will likely fail.

If you are looking for a higher security option, get a hard wedge with an alarm, which will provide a loud siren in case of a break in.


Install a Door Bull

The Door Bull is a device designed by a group of ex police officers who saw too many break-ins. They wanted to give people a way to protect themselves from forcible entry. Your lock can be rendered useless as when a burglar forces entry, the doorframe is likely to break first. This device works by distributing the force when your doorframe experiences a force such as a kick, meaning it shouldn’t break. It does require some installation but this is simple and should only take 10-15 minutes.

Buy a Portable Door Lock

A portable door lock can be very handy if you have lost your keys and need to lock your door. A portable lock consists of a steel piece that is inserted into the door strike, then secured into place with a handle which then restricts the door from opening. It’s a great short term solution but you should always look to get your locks repaired by a local Locksmith to ensure that your home remains secure.


Install a Door Chain

Door chains are a great way to lock your door without a key, and what’s even better is that it’s often not uncommon to see these already fitted to door for additional home security. These door chains don’t stop the door from being opened but rather restrict it once opened. This is a great way to secure your door for an single evening or whilst you get your lock or door repair but is not a great long term solution.


Use a Fork

As weird as it sounds, you could use a fork to lock your door and keep intruders out! To begin, this DIY method needs some DIY skills on the fork itself. . What you need to do is to slightly bend the end of your fork, then you need to cut the fork’s handle (be careful as it could be very sharpened and can cause injury).  The idea is that you insert the prong end into the locks strike plate, then place the handle between the prongs, which keeps the handle from slipping.

We don’t recommend this method as you are likely to cause damage to your door lock even further which can be more costly for yourself to get amended.


Use a Chair

A method that we’ve probably all seen a lot on TV is using a chair under the door handle to prevent someone opening the door. However, you’d have to secure the chair correctly to get the full security benefits.

  • Take into consideration it works on lever and not a knob door
  • It’s better to consider using an easily adjustable chair, such as office chairs, so you can have adjust it to the right height.
  • Use anything that is solid enough to raise your chair if it is a nonadjustable one.


In conclusion, although we highly recommend immediately calling a local Locksmith when you lose or forget your  key, there will be situations where you will need to at least temporarily be able to lock your door without a key. It’s always best to be prepared, so having these back up options is always good to have to hand

At Keytek® Locksmiths, we are committed to assisting you in keeping your house secure, which is why we are always upgrading our security content on our website. If you were interested in this guide, we recommend that you take a look at our Home Security Guide, where we break down home security into sections like your front door, garden gate, outdoor lights and more.

If you are in need of a locksmith, then you will be able to find a local engineer on our Find a Locksmith Page