A Guide to Types of Home Locks

Most door or window locks in the United Kingdom conform to the British Standard 3621. It’s not too difficult to check this as you can ask a Master Locksmith or the locksmiths Association has online advice on how to tell if you have a BS3621 lock. Security Standards to look for are any BS3621 lock which is required for many home insurance policies, especially for mortice locks.

Mortice Lock

The most common type of door locks available are 5-lever Mortice Deadlock usually fitted to wooden doors. They lock inside or out with a key and are fitted into the door rather than on it. The Mortice Deadlock requires a key to lock/unlock from both sides. Usually 5-lever deadlocks (meeting BS3621 standard) are required for home insurance. Whereas the Mortice Sashlock combines a deadbolt and latch mechanism and is operated by a key and a handle.

Multi-Point Locking Systems

Multi-Point Locking System Found on UPVC or composite doors, this type of lock operates through a mechanism that locks at multiple points at the top, middle, and bottom when the handle is lifted, and the door is locked with a key. They also require a key-operated cylinder lock, as well as turning the handle upwards in order to secure the lock. As a result of their rugged design and complex locking system, multi-point door locks provide high security and can withstand the elements.

Local locksmith replacing a lock

Rim Locks

Rim Automatic Deadlatch also known as a night latch, is typically a surface-mounted lock. These locks are fitted on the inside of wooden or glass panelled doors, Including older-style locks used on internal or less secure external doors.

They have a key-locking cylinder and lock automatically once the door is shut. This is usually a backup lock fitted together with a mortice lock as they are not recommended as the sole security for external doors.

 

 

Cylinder Locks

Cylinder locks available are commonly used in uPVC and composite doors. Usually be single, double, or thumb-turn cylinders. Euro cylinder locks feature anti-snap cylinders for enhanced security. The oval cylinder is similar to Euro cylinders but with an oval shape. Oval cylinder locks are less common but still found on some doors.

Smart Locks

Smart locks are the latest type of lock to hit the market. They offer keyless entry using PIN codes, smartphone apps, or biometric methods. Due to their flexibility and ease of use they have become increasingly popular in modern homes. Some models are compatible with traditional locks for enhanced security.