Door Knob Lock Installation: What the Job Actually Involves
Installing a door knob lock correctly is not simply a matter of sliding a new knob into an old hole. Bore hole diameter, latch backset distance, door thickness, and strike plate alignment all have to match — and when they don't, even a brand-new Schlage or Kwikset knob will bind, fail to latch cleanly, or leave gaps that compromise security. Our technicians measure each of these dimensions before selecting or modifying hardware, and they check that the door itself is properly aligned in the frame before installation begins. A knob that catches or drags is often a sign the door has shifted, not just that the lock is old, and fixing only the hardware without addressing the door will leave you with the same problem in six months.
Exterior door lock installation adds another layer of consideration: weather exposure, key cylinder grade, and whether the knob is paired with a deadbolt above it all factor into long-term performance. We routinely install Grade 1 and Grade 2 rated knob locks on front and side entry doors throughout Smyrna, and we can rekey new hardware to match an existing key so you aren't managing a growing ring of different keys for different doors. If your project is commercial — a retail space near Cumberland Boulevard, a small office, or a multi-unit property — we also carry and install mortise lock sets, which offer a deeper, more durable locking mechanism built directly into the door's edge rather than surface-mounted on its face. Mortise lock work is a core part of what our commercial locksmith team does every day, and it's the right choice for high-traffic doors that see constant use.

