What is a mortice lock?

A mortice lock (or mortise lock) is fitted into a pocket, or mortice cut into the edge of a door. Unlike surface-mounted locks attached externally, mortice locks are recessed within the door itself, providing a secure and discreet locking solution.

Types of Mortice Locks

Mortice locks are generally available as deadlocks or sash locks, each serving distinct purposes:

• Deadlocks: Operated solely with a key, deadlocks feature a central deadbolt that’s locked or unlocked by turning the key or thumb turn. They don’t require a handle and are often used alongside a night latch for added security at the centre of the door.
• Sashlocks: A sashlock combines a sprung latch bolt and a central deadbolt. The latch bolt holds the door closed, while the deadbolt provides additional security. The latch is operated by a handle, and the deadbolt is retracted with a key. Sashlocks are ideal for doors without separate locking points, such as those without a night latch.

Traditional Key Locking vs Euro Cylinder Operation

Mortice locks can either use traditional key locking mechanisms or be cylinder-operated:

• Key-Operated Mortice Locks: These locks rely on a lever system. The number of levers determines the lock’s security level—higher lever counts provide better protection. For example, a 5-lever mortice lock is much more secure than a 2- or 3-lever lock. You should always fit 5-lever locks to external doors for maximum security, while 2- or 3-lever locks are suitable for internal doors where security requirements are lower. A separate escutcheon is typically included to cover the keyhole once fitted.
• Cylinder-Operated Mortice Locks: These use either a euro or oval cylinder, depending on the application. It’s essential to match the cylinder and lock to meet any required technical standards. Swapping the cylinder for a different type can invalidate the lock’s certification. As with key-operated locks, an escutcheon may be provided to protect the cylinder.

Specialised Mortice Locks

Bathroom Locks

Bathroom locks are purpose-built to provide privacy where it’s most needed: in bathrooms and other spaces where uninterrupted use is essential. Their design balances privacy, safety, and convenience.

Key Features:

• Privacy Function: Specifically created for bathroom doors, these locks allow users to secure the door from the inside while enabling quick access in emergencies.
• Operation: The latch is retracted using a lever handle, while the deadbolt is engaged with a thumb turn. In the event of an emergency, the deadbolt can be quickly released using the emergency override feature.

These locks are user-friendly and prioritise safety without sacrificing functionality. They’re an essential choice for maintaining privacy in residential, commercial, or public bathroom facilities.

Mortice Euro Night Latches

The Euro Night Latch is a versatile lock that combines security and ease of use. Its auto-locking mechanism engages as soon as the door is closed, making it ideal for external doors and entry points where convenience and security are key.

Key Features:

• Inside Operation: The latch is withdrawn by simply operating a lever handle from inside, providing effortless unlocking.
• Outside Operation: A euro cylinder operates the latch bolt externally, offering controlled access.

Euro Night Latches strike the perfect balance between security and practicality, making them an excellent choice for external doors in both residential and commercial settings.

Escape Sash Lockcases

Designed for emergency exits, Escape Sash Lockcases prioritise quick and unobstructed escape routes in critical situations. Built to EN179 standards, they comply with safety regulations, ensuring your clients meet legal requirements for emergency exits.

Key Features:

• Escape Functionality: With a single lever action, both the latch and deadbolt are withdrawn simultaneously, allowing for a fast and easy exit in emergencies.
• Cylinder Operation: The single-throw deadbolt is operated in two stages using a key—first retracting the deadbolt, then the latch bolt.
• Simultaneous Withdrawal: When the inside lever is operated, both locking mechanisms are disengaged at once, ensuring no delays in evacuation.

These locks are a critical component in public and commercial buildings where fire safety and rapid evacuation are paramount. Their design ensures occupants can exit safely and efficiently during emergencies.

................................................................................................................

To receive more product news and guides on how to use your tools and devices, click below to subscribe to our newsletter: