Preventive Maintenance

BuildingWrench repair guide

Preventive Maintenance

Quarterly Commercial Door Inspection Checklist

Doors fail gradually through loose hinges, leaking closers, latch misalignment, damaged panic hardware, and worn seals. A short quarterly inspection catches these before they become security or life-safety problems.

Last reviewed 2026-09-12 · General facility-maintenance information, not a substitute for site procedures, manufacturer instructions, codes, or qualified professional judgment.

Routine PMSkill: Beginner-friendlyFormat: Diagnose → Fix → Test
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Safety boundary

Routine PM does not replace code-required inspections, manufacturer maintenance, or licensed/certified service.

Full troubleshooting steps are in Pro

The safety boundary, quick answer and stop-work conditions above stay free. Pro opens the likely causes, symptom table, step-by-step procedure and preventive maintenance for this guide.

Stop and call a licensed professional when

  • Fire door does not self-close or latch
  • Egress hardware is unreliable
  • Frame or hinge damage is significant
  • Accessibility function is compromised

Mistakes, FAQ, parts and tools

Pro opens the rest of this guide: common mistakes, field FAQ, the parts list, and the tools for the job.

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Preventive Maintenance

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Preventive Maintenance

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