Ask an expert: Warning line safety for workers other than roofers

Q: Can workers other than roofers use colored ribbon or flagged rope as a warning line?

A: Workers should use rope, wire, or a chain rather than colored ribbon - they should be able to feel the line if they back up against it, even if they’re wearing heavy clothing. The warning line should also be flagged at least every 6 feet with high-visibility material and have warning signs that are visible to workers.

Need more information on how to set up and use a warning line? Check out Oregon OSHA’s new fact sheet: Construction industry best practices for using warning lines.