
What Happens to Your Locks During a Forced Entry — Mortise Lock and Beyond
Burglars rarely choose finesse. The most common attack methods — door kicks, crowbar prying, and drill attacks — cause predictable but varied damage depending on what hardware was installed. A knob lock or lever handle is structurally the weakest point on most residential doors; the latch bolt can be sheared or the spindle snapped with a single hard kick near the knob. Mortise lock bodies, which are recessed inside the door edge, are far more robust but are not invincible — a sustained crowbar attack can crack the cast housing, strip the deadbolt throw, or pull the entire cylinder out of its pocket. Understanding exactly what was damaged is not just an aesthetic concern; a door that looks closed may not be latching at all, leaving the property fully accessible even after you think it is shut.
On commercial properties, the stakes compound quickly. A Chicago storefront with a multi-point mortise lock may have had its espagnolette rods bent or its keep plate torn from the frame. A residential building in Wicker Park or Pilsen with original 1920s hardware may have an antique mortise lock that requires careful sourcing of replacement parts. Our experienced technicians have worked on everything from modern Schlage B-series deadbolts to century-old Chicago Corbin mortise locks, and they diagnose the full scope of damage before quoting a single dollar of work. No guesswork, no surprise charges — you get an exact price confirmed before any tool touches your door.

