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SESK: Stuff Everyone Should Know · sesk.info/osha-warning-line-roof-work-area

Where must warning line systems be erected on a low-slope roof work area?

Around all sides of the roof work area.

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  1. Only near the roof access point
  2. Around the heaviest pile of materials
  3. Around all sides of the work area ✔

Why: 1926.502(f)(1) requires the warning line to be erected around all sides of the roof work area.

Huh, didn't know that: Without mechanical equipment, the warning line must be at least 6 feet back from the roof edge.

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Why did the warning line feel left out? It was roped off.
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References

Answer: Around all sides of the work area. 1926.502(f)(1) requires the warning line to be erected around all sides of the roof work area.

  1. 29 CFR 1926.502(f)(1) www.law.cornell.edu/cfr/text/29/1926.502
    The warning line shall be erected around all sides of the roof work area.
    Checked 2026-10-10.

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