Door problem guides
Why a commercial door slams or will not latch
A practical guide to the closer, alignment, latch, and strike problems that can make a business entrance slam, stop short, or need an extra push.
Diagnose the opening
The symptom can involve more than one piece of hardware.
What you may notice
- The door closes hard enough to shake the glass or frame
- It slows down but stops just before the latch reaches the strike
- It latches only when someone gives it a final push
- Closing behavior changes on windy, cold, or high-traffic days
Possible causes
- Closer sweep or latch speed no longer matches the opening
- A worn, leaking, loose, or incorrectly sized closer
- Door sag or frame contact that creates resistance near closing
- A latch and strike that no longer line up cleanly
Before scheduling
What helps us understand the problem.
- Record a short video from fully open through the complete closing cycle
- Photograph the closer body, arm, latch, strike, and any rub marks
- Note whether wind, temperature, or one direction of travel changes the symptom
- Avoid forcing or disabling hardware on an exit door; schedule an on-site assessment
Related service
Commercial door work related to this symptom.
These guides are for documenting symptoms, not remote diagnosis. The door, frame, and hardware may need an on-site assessment.