OSHA 1926.501(b)(10): fall protection for roofing work on low-slope roofs
Under 29 CFR 1926.501(b)(10), employees doing roofing work on low-slope roofs with unprotected edges 6 feet or more above lower levels need guardrails, safety nets, personal fall arrest, or a warning line combined with one of those or a safety monitor. On roofs 50 feet or less wide, a safety monitor alone is permitted.
Official text
(b)(10) Roofing work on Low-slope roofs. Except as otherwise provided in paragraph (b) of this section, each employee engaged in roofing activities on low-slope roofs, with unprotected sides and edges 6 feet (1.8 m) or more above lower levels shall be protected from falling by guardrail systems, safety net systems, personal fall arrest systems, or a combination of warning line system and guardrail system, warning line system and safety net system, or warning line system and personal fall arrest system, or warning line system and safety monitoring system. Or, on roofs 50-feet (15.25 m) or less in width (see appendix A to subpart M of this part), the use of a safety monitoring system alone [i.e. without the warning line system] is permitted.Read the full section on eCFR
(f)(1) The warning line shall be erected around all sides of the roof work area. (i) When mechanical equipment is not being used, the warning line shall be erected not less than 6 feet (1.8 m) from the roof edge. (ii) When mechanical equipment is being used, the warning line shall be erected not less than 6 feet (1.8 m) from the roof edge which is parallel to the direction of mechanical equipment operation, and not less than 10 feet (3.1 m) from the roof edge which is perpendicular to the direction of mechanical equipment operation. (iii) Points of access, materials handling areas, storage areas, and hoisting areas shall be connected to the work area by an access path formed by two warning lines. (iv) When the path to a point of access is not in use, a rope, wire, chain, or other barricade, equivalent in strength and height to the warning line, shall be placed across the path at the point where the path intersects the warning line erected around the work area, or the path shall be offset such that a person cannot walk directly into the work area.Read the full section on eCFR
(h)(1) The employer shall designate a competent person to monitor the safety of other employees and the employer shall ensure that the safety monitor complies with the following requirements: (i) The safety monitor shall be competent to recognize fall hazards; (ii) The safety monitor shall warn the employee when it appears that the employee is unaware of a fall hazard or is acting in an unsafe manner; (iii) The safety monitor shall be on the same walking/working surface and within visual sighting distance of the employee being monitored; (iv) The safety monitor shall be close enough to communicate orally with the employee; and (v) The safety monitor shall not have other responsibilities which could take the monitor's attention from the monitoring function.Read the full section on eCFR
What it requires, in plain English
- Roofing work on a low-slope roof with unprotected sides and edges 6 feet (1.8 m) or more above lower levels needs guardrail, safety net or personal fall arrest systems, or a warning line system combined with a guardrail, safety net, personal fall arrest or safety monitoring system.
- On roofs 50 feet (15.25 m) or less in width, a safety monitoring system alone is permitted.
- Warning lines go around all sides of the roof work area, at least 6 feet from the edge without mechanical equipment; with mechanical equipment, at least 6 feet from edges parallel to its travel and 10 feet from edges perpendicular to it.
- A safety monitor must be a designated competent person on the same surface, within sight and talking distance of the workers, with no other duties that distract from monitoring.
Where it shows up on site
- Roofers working between the warning line and the roof edge with no other protection
- Warning lines set closer than 6 feet to the edge, or missing along one side of the work area
- A “safety monitor” who is also running the kettle or laying membrane
Verify on site before you call it
A photo rarely shows every fact a standard depends on. Confirm these in person before treating the condition as a violation:
- Is the roof a low-slope roof, and are the unprotected edges 6 feet or more above the lower level?
- Is the work roofing work, rather than construction of the roof deck itself?
- How wide is the roof, if a safety monitor is being used without a warning line?
- Is mechanical equipment in use, and in which direction does it travel relative to each edge?
- Who is designated as safety monitor, and do they have other duties?
Typical corrective actions
- Erect a warning line around all sides of the work area at the required setback, with an access path formed by two warning lines.
- Protect anyone working between the warning line and the edge with guardrail, safety net, personal fall arrest or a safety monitor.
- Designate a competent person as safety monitor with no other responsibilities, positioned on the same roof within sight and voice range.
- Use guardrails or personal fall arrest instead of a monitor alone where the roof is wider than 50 feet.
Common questions
How far from the roof edge does a warning line need to be?
Under 1926.502(f)(1), at least 6 feet from the roof edge when mechanical equipment isn’t being used. With mechanical equipment, at least 6 feet from edges parallel to the equipment’s direction of travel and at least 10 feet from edges perpendicular to it.
Can a safety monitor be the only fall protection on a low-slope roof?
Only on roofs 50 feet or less in width, per 1926.501(b)(10). On wider roofs a safety monitoring system has to be combined with a warning line system, or another listed system has to be used.
Turn the observation into a notice
Record what the photo shows, confirm the on-site checks above, and identify the responsible company and due date. Use the fillable construction safety notice template or follow aworked example from observation to verified fix. Cirqify can draft the notice from your circled photo for you to review.
Related standards
This guide summarizes federal OSHA construction standards for general information. It is not legal advice. States with their own OSHA-approved plans may set different or additional requirements; see federal and state coverage.