What is the proper distance from the roof edge for a warning line?
15 feet from an edge to locate and mark a warning line is an OSHA interpretation which makes sense to me. The recent and long ago interpretations on roof work by non-roofing workers starting with the early one in the third edition of Dr. Ellis’ book “Introduction to Fall Protection”, indicate that 15 feet makes a non-roofing violator more noticeable than 6 or 10 feet for roofers.