Commercial Door Lock Repair in DFW: Common Issues & Solutions

Common Commercial Door Lock Problems

Commercial doors take heavy use and develop issues:

• Lock won't latch — the bolt doesn't engage the strike plate. Usually a misalignment issue
• Key won't turn — worn tumblers or a damaged cylinder
• Door won't stay closed — the latch isn't engaging, or the door is misaligned
• Lock is stiff or hard to turn — worn tumblers or lack of lubrication
• Electronic lock won't respond — failed actuator, wiring issue, or blown fuse
• Panic bar won't latch — the exit device is out of adjustment
• Door closer doesn't close properly — the hydraulic closer needs adjustment or replacement

Problem 1: Lock Won't Latch

If the bolt doesn't engage the strike plate, the door won't lock. This is usually caused by door misalignment — the door has sagged or shifted, so the bolt no longer lines up with the strike plate opening.

The fix: we adjust the door (realign the hinges) or reposition the strike plate. Cost: $100-$200. If the door frame has shifted significantly, we may need to reinstall the strike plate in a new position.

Problem 2: Key Won't Turn

If the key won't turn in a commercial lock cylinder, the tumblers are worn or damaged. Commercial locks get heavy use — the tumblers wear out faster than residential locks.

The fix: we can replace the worn tumblers ($150-$200) or replace the entire cylinder ($180-$300). If the key is also worn, we cut a new one. If you want to keep the same key, we rekey the new cylinder to match.

Problem 3: Electronic Lock Won't Respond

If your commercial electronic lock (keycard, keypad, or electric strike) stops working, the issue could be the lock actuator, the wiring, the power supply, or the control board.

The fix: we diagnose the issue with a multimeter and visual inspection. Common fixes: replace the actuator ($200-$350), repair wiring ($100-$200), replace the power supply ($150-$250), or replace the control board ($300-$500).

Problem 4: Panic Bar Won't Latch

If your panic bar (exit device) doesn't latch properly, the door won't stay closed — a safety and security issue. Common causes: the latch is out of adjustment, the strike is misaligned, or the internal springs are worn.

The fix: we adjust the latch engagement ($150-$200), realign the strike ($100-$150), or replace worn internal parts ($150-$350). Regular maintenance extends the life of exit devices and ensures they work in an emergency.

Problem 5: Door Closer Issues

If the door doesn't close properly — it slams, doesn't close fully, or closes too slowly — the hydraulic door closer needs adjustment or replacement. Commercial door closers are essential for fire doors (they must self-close) and security.

The fix: we adjust the closer's sweep and latch speed ($100-$150) or replace the closer ($150-$300 including the hardware). Commercial-grade closers (LCN, Norton, Dorma) last 10-15 years with proper maintenance.

Can Commercial Door Lock Repair Be Done at My Business?

Yes. Our mobile rigs carry commercial lock cylinders, tumbler kits, door closer adjustment tools, electric strike testers, and panic bar parts. We repair commercial door locks on-site at your business — no need to close for repairs.

We also offer after-hours and weekend service for businesses that can't close during regular hours. Call (682) 666-2966 to schedule commercial door lock repair.