Mortise locks are more expensive due to their:

• Durability: Made from heavy-duty materials to withstand frequent use.
• Versatility: Suitable for various lock configurations and compatible with different door styles.
• Complexity: The mechanism is intricate and requires precise manufacturing.
• Security: Offers better resistance to forced entry compared to many standard locks.

• Latch: A simpler mechanism where a spring-loaded bolt is operated by a knob or lever. Often used in residential interior doors.
• Mortise Lock: A more complex mechanism installed inside a door recess, typically featuring both a latch (for door closure) and a deadbolt (for security).

A mortise lock is a locking system requiring a pocket (or mortise) cut into the door where the lock body is fitted. It typically includes:

• A latch for holding the door closed.
• A deadbolt for added security.
• A key or thumb-turn mechanism for operation.

• Yale Lock: Often refers to a cylinder or rim lock with a simple latch mechanism, typically surface-mounted or installed with minimal cutting into the door.
• Mortise Lock: Requires a pocket to be cut into the door and is generally more robust and secure.

Yes. Mortise locks are more secure due to their:

• Heavy-duty construction.
• Multiple locking points (in some cases).
• Higher resistance to tampering and forced entry.

It depends on the situation:

• Deadbolt: Excellent for standalone security when combined with a latch.
• Mortise Lock: Provides comprehensive security by integrating both latch and deadbolt functions.

To install a mortise lock:

1. Mark and cut the mortise: Use a template to mark where the lock body will fit, then chisel or use a router.
2. Install the lock body: Insert it into the mortise and secure it with screws.
3. Fit the trim and hardware: Attach handles, escutcheons, and strike plates.
4. Test the lock: Ensure smooth operation.

Pros:

• High durability and security.
• Customizable with various trim and handle designs.
• Suitable for both residential and commercial applications.

Cons:

• Higher cost.
• Complex installation.
• Requires skilled maintenance or replacement.

• Use the lever handle or knob to operate the latch.
• Insert and turn the key (or thumb turn) to operate the deadbolt for locking/unlocking.

• Knob Lock: Simpler, more affordable, and suited for light-duty use (e.g., interior doors).
• Mortise Lock: Stronger, more durable, and secure, ideal for exterior and high-traffic doors.

• Yes. Their intricate design and heavy-duty construction make them significantly harder to pick than standard cylinder locks.

• Door thickness: Ensure compatibility with your door dimensions.
• Backset measurement: Distance from the door edge to the lock’s keyhole center.
• Security level: Choose based on the application (residential vs. commercial).
• Trim and style: Match the aesthetic and function (handles, finishes).

• Replacement can be straightforward if the new lock matches the existing mortise dimensions. Otherwise, additional modifications to the door may be needed.

• Yes, but it requires cutting a mortise into the door, which involves more effort and precise craftsmanship compared to a surface-mounted cylinder lock installation.

• Rim Lock: Surface-mounted, suitable for interior or less secure doors.
• Mortise Lock: Embedded into the door, providing superior strength and security.