Mortise Lock Service & Replacement

A mortise lock is a lock assembly installed inside a pocket (called the mortise) cut directly into the edge of a door, rather than through a bored hole in the face of the door. Because the entire mechanism — latch bolt, deadbolt, springs, and cam — lives inside the door stave itself, the assembly is more structurally integrated than a standard cylindrical deadbolt. This makes it harder to compromise through kick-in force and allows one trim set to control multiple locking functions simultaneously. Mortise assemblies were the dominant hardware format in American residential and commercial construction from the late 1800s through the mid-20th century, which is why they appear so frequently in Salt Lake City's older neighborhoods and historic districts.

Yes, though the process differs slightly. The cylinder in a mortise assembly is a separate component — it threads or cams into the main chassis — so it can be removed and rekeyed independently without disturbing the rest of the lock body. Our technicians carry pinning kits for the most common mortise cylinder keyways, so rekeying can typically be completed on-site in a single visit. If the existing cylinder is worn or uses an outdated keyway, we can replace just the mortise lock cylinder with a higher-security alternative while keeping the original chassis and trim intact. This is a common and cost-effective service for new homeowners in SLC's Capitol Hill and Avenues neighborhoods who want to control who holds a key without replacing period hardware.

Not necessarily. Stiffness and partial bolt throw are among the most common mortise lock complaints, and in a majority of cases they have repairable causes: dried or degraded lubricant in the chassis, a worn return spring, a cam that has shifted out of alignment, or a door frame that has settled and moved the strike plate out of position. Our technicians will extract the chassis, clean and inspect every component, and determine whether the issue is mechanical wear inside the assembly or an alignment problem with the door and frame. Full chassis replacement is recommended when the case itself is cracked, when the bolt mechanism has sheared internally, or when the owner wants to upgrade hardware — not as a default response to stiffness or sticky operation.

Yes. Corbin Russwin mortise lock bodies are common in SLC's older residential and commercial inventory, particularly in historic apartment buildings and institutional properties, and our technicians are experienced with their chassis formats, cylinder profiles, and trim configurations. Baldwin mortise lock hardware is a frequent upgrade request from homeowners who want the aesthetic of solid brass or bronze trim alongside modern security features inside the cylinder. We carry parts and cylinders compatible with these formats and can source less common components when needed. If you have hardware from another legacy manufacturer and are unsure whether we can service it, call (801) 938-8361 and describe what you have — we can usually give you a clear answer before you schedule a visit.

Yes, though the feasibility depends on the specific door, frame, and existing mortise pocket. A smart mortise lock — one with a keypad, Bluetooth, or Z-Wave connectivity — is designed to fit the same pocket as a standard mortise assembly, so retrofit is often possible without altering the door. Electric mortise lock installations, which require a power source and sometimes low-voltage wiring routed through the door and frame, are more involved and are most common on commercial entries, but residential applications do exist. Our technicians will assess your existing setup and confirm whether a direct retrofit is possible, whether the pocket needs any modification, and whether the door construction supports the hardware you have in mind. We will give you a clear picture before any work begins.

We do not publish preset rates for mortise lock work because the scope varies meaningfully from job to job. Factors that affect the final quote include the type and age of the existing assembly, whether parts are on the truck or need to be sourced, the complexity of the work (a single cylinder rekey versus a full chassis replacement and frame adjustment), your location within the Salt Lake Valley, and the time of day. After-hours and overnight calls may carry a different service rate than standard daytime appointments. What we always do before starting any work is give you a confirmed, exact price so there are nothing unexpected on the final invoice. Call (801) 938-8361 at any hour to describe your situation and get a quote — we answer 24/7.