The NHSM Guide to Door Locks

With such a wide range of door locks available, it can be hard to know your mortice from your multipoint. This run-down will provide you with all the information you need.  

When it comes to selecting a lock type for your doors at home, the choices have never been so varied. But the wide array of options can leave your head spinning, and that’s without considering door and lock compatibility issues.

To get you up to speed, we’ve put together this quick reference guide of the most common types available.

Mortice locks

Used mostly in traditional wooden door frames, mortice locks are still common in homes across the world. Think of mortice locks as the archetypal ‘key and keyhole’ type locks, where you need the key to lock and unlock the door.

Mortice locks come in a wide range of specifications, but we’d recommend looking for a 5-lever lock that has the BSI Kitemark symbol.

Cylinder locks

Another common lock type is the cylinder lock. Usually found in external uPVC doors, this lock consists of a barrel where the key is inserted just below the door handle. They tend to be used in conjunction with multi-point locks.

Image of Yale Cylinder blog

Cylinder locks are quite straightforward to upgrade, and we’d suggest fitting the best you can afford. A model such as the Yale Platinum 3 Star Euro Profile Cylinder offers the highest level of security certification and is designed to stop lock snapping, a form of attack that allows intruders to break the lock without needing any specialist tools.

Night latches

Night latches, also commonly known as Yale locks, are often used on wood doors as a secondary lock to add an extra level of security. This type of lock is surface-mounted on the inside face of a door, rather than fitted within the door itself.

The most secure nightlatches require a key for opening both inside and outside. We’d always recommend using a nightlatch alongside another type of lock, rather than as the sole lock on an external door.

Multi-point locks

If you have a uPVC door, there’s a chance that it’s already fitted with a multi-point lock. This is the lock type where, when you turn the key, a series of three or more locking points engage along the door.

Multi-point locks are considered to be highly secure, and they tend to require the skills of a specialist when fitting.

Has your lock successfully kept thieves out? Let us know on social media using #NHSM19