There will come the point in everyone’s lives where they’ll need to consider changing the lock on their home. Needing to change a lock can happen for a range of reasons, but regardless of the why, we’ll cover the how in today’s article.

Do note that for this article, we’ll only be covering the three most common types of lock that you’ll find for your door and that if you have a different kind of lock, it may be worth consulting a locksmith or joiner for your lock’s removal and installation.

That being said, if you do opt to change your lock yourself, you’ll need to be mindful of staying safe as you install it, and you’ll want to make sure you do it correctly so that the lock serves the purpose of securing your property.


Tools That You’ll Need

For the installation of a new door lock, you’ll need several tools to hand, or you’ll need to source these tools before beginning the installation process:

  • A wood chisel
  • A drill with appropriate drill bits
  • Hammer
  • Screwdriver
  • Pliers
  • Pencil
  • Hacksaw/Handsaw (for metal)
  • Adhesive

Do note that the hacksaw or handsaw will need to have the correct density to cut through metal – as some locking systems will require the tail bar to be cut to length.



The Three Most Common Types Of Lock

The three most common types of lock are the Euro Profile Cylinder lock, a Mortice Sashlock, and a Cylinder Rim lock. Each lock varies with how its mechanism operates. Generally, each type of lock will be better suited to different doors or applications.

Euro Profile Cylinder locks are used for doors that require a high level of security. A key can be used to lock or unlock the door from either side of the lock.

A Mortice Sashlock is a lock that is both a deadlock as well as a latch. Like the Euro Profile Cylinder locks, these lock types can be locked and unlocked from both sides. The latch in these locks is usually operated by the door handle, and the keyhole itself is often covered with an Escutcheon.

A Cylinder Rim lock is a lock that locks your door upon closing using a latch system and can be opened from either side of the door. However, if attempting to open it from the outside, you’ll need a key. If opening from the inside, you can use the lever on the latch with no key required.


Changing A Euro Profile Cylinder Lock (Step By Step)

When looking to replace your current lock with a Euro Profile Cylinder Lock, you’ll need to follow this process:

  • Begin by removing the fixing screw for the central lock using your drill and the appropriate size of drill bit.
  • Loosen (but don’t remove) the door handles on either side of the door using your drill and the right size of drill bits. Loosening the door handle panels can help with the easy removal of the cylinder itself.
  • Get your key and put it inside the lock cylinder. Turn the key gently to the left or right (10 o’clock or 2 o’clock positions) and then pull towards yourself. The cylinder should slide out.
  • Put in the new lock cylinder and put in a new (or your existing) fixing screw.
  • Tighten the handle panels on either side of the door.
  • Test the lock on both sides to ensure that it works.




Changing A Mortice Sashlock (Step By Step)

If you have a Mortice Sashlock, the steps will differ slightly. To replace this kind of lock, you’ll need to:

  • To begin removing this lock type, you’ll need to have the door open in its locked state. You’ll then need to use a screwdriver (usually a flat-headed screwdriver) to remove the screws holding the lock faceplate in place.
  • After these are removed, remove the door handle panels on both sides as well as the spindle bar that connects both handles. You’ll need this later, so don’t throw it out.
  • You’ll then need to use a pair of pliers to pull out the bolt and the old locking mechanism. Compare the old bolt and locking mechanism to your new one.
  • You’ll most likely need to use a hammer and chisel to carve space for the new lock if the new lock is bigger than the old one. If the inverse is true, you should be able to install the new lock without much hassle. If it is far too big, then you may need to use adhesive to keep the new lock in place.
  • Test the lock works from both sides.
  • After fitting the new lock, fit the spindle bar, handles and handle faceplates back onto the door – screwing them into place.
  • Now the lock is fitted, you’ll need to fit the strike plate on the door frame to match. Remove the old one using your drill and appropriate drill bits.
  • After the old one has been removed, if the new strike plate doesn’t fit, use a pencil to trace its outline and chisel the wooden door frame to fit using a hammer and wood chisel.
  • Finally, install the new strike plate using the appropriate drill bits and wood screws.
  • Test the lock works from both sides.


Changing A Cylinder Rim Lock (Step By Step)

For A Cylinder rim lock, you’ll need to:

  • Start by unscrewing the existing lock body using a screwdriver, keeping the screws and the body of the lock itself.
  • Then, on the inside of the lock, unscrew the screws holding the current cylinder rim lock in place.
  • Remove the old lock by pushing gently until it slides free. Do not remove the mounting plate that’s on the door, only the lock.
  • Next, you may need to cut the tail bar to the right length for your door before you install the new cylinder rim lock. Make sure the tail bar is the same size as the old lock.
  • Fit the new cylinder into the door and mounting plate, screwing it into place with screws you kept from step two (or the screws provided with the lock).
  • Screw the lock body back into place.
  • Test the lock works.



Lock Aftercare

After installing your new lock, you’ll need to take good care of it. Ensuring your lock is well oiled is a great start. Also, be sure to clean them out of debris to prevent them from jamming using compressed air cylinders with precision nozzles.

Only use oils or products suitable for the type of material your lock consists of – otherwise, you could cause corrosion or long-term damage to the lock itself.

Here at MGM Timber, we offer a whole host of ironmongery supplies, including a range of door handles and accessories. Have a browse today!