There are few things more frustrating than a stuck door handle, especially when you're trying to repair, replace, or re-key a vintage lock. If you are dealing with a mortise door lock, you know that these mechanisms are a bit more complex than the standard cylindrical locks found in modern homes. Their durability and classic aesthetic make them a favorite for homeowners, but that complexity often leads to confusion when it's time to take them apart.

Installing a mortise lock is a rewarding DIY project that can significantly boost your home's security and curb appeal. Unlike standard cylindrical locks, a mortise door lock fits into a deep pocket—or mortise—cut into the edge of the door. This design makes them stronger and more resistant to forced entry. While the process requires precision and the right tools, it's a manageable task for a confident DIYer.

A broken door lock can be more than just an inconvenience; it can be a security concern. If your home has mortise locks, you might feel a bit intimidated by their complex appearance. Unlike modern cylindrical locks, mortise locks are housed within a pocket cut into the edge of the door, making them seem difficult to access and repair.