Doors & Hardware

BuildingWrench repair guide

Doors & Hardware

Commercial Door Rubbing the Frame: How to Find the Cause

A rubbing door usually means hinges loosened, the door sagged, the frame shifted, weatherstripping swelled, or floor clearance changed. Use rub marks and reveal gaps before adjusting hardware.

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

Routine facility fixSkill: Beginner-friendlyFormat: Diagnose → Fix → Test
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Safety boundary

Preserve required egress, fire-door, security, and accessibility functions after any adjustment.

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-rated door will not close or latch
  • Frame is cracked or shifted
  • Hinge anchorage is damaged
  • Major cutting or planing is required

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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Doors & Hardware

Commercial Door Hinge Screws Keep Loosening: Find the Real Cause

Hinge screws that repeatedly loosen may indicate stripped holes, hinge wear, wrong fasteners, door sag, vibration, or a damaged frame reinforcement. Re-tightening every week is not a repair.

Doors & Hardware

Commercial Door Closer Won’t Close the Door: What to Check

A commercial door that stops before latching may have the closer adjusted too slowly, weak spring power, binding hinges, weatherstripping resistance, frame misalignment, or building pressure. Check mechanical drag before turning closer valves.

Doors & Hardware

Commercial Door Closer Slamming? How to Adjust Sweep & Latch Speed

Most hydraulic commercial door closers have separate sweep and latch-speed adjustments. Make very small valve changes, test the full closing cycle after each change, and stop if the closer is leaking oil or the adjustment valve is near its limit.

Doors & Hardware

Loose Commercial Door Lever Handle: How to Tighten It Correctly

A loose commercial lever is often caused by a loose set screw, rose/trim fasteners, through-bolts, or wear inside the lockset. Tighten the correct fastener and verify the latch works smoothly rather than simply cranking on the visible handle.