Warning line systems consist of ropes, wires, or chains, and supporting stanchions and are set up as follows:

Flagged at not more than 6-foot (1.8 meters) intervals with high-visibility material; Rigged and supported so that the lowest point (including sag) is no less than 34 inches (0.9 meters) from the walking/working surface and its highest point is no more than 39 inches (1 meter) from the walking/working surface. Stanchions, after being rigged with warning lines, shall be capable of resisting, without tipping over, a force of at least 16 pounds (71 newtons) applied horizontally against the stanchion, 30 inches (0.8 meters) above the walking/working surface, perpendicular to the warning line and in the direction of the floor, roof, or platform edge; The rope, wire, or chain shall have a minimum tensile strength of 500 pounds (2.22 kilonewtons) and after being attached to the stanchions, must support without breaking, the load applied to the stanchions as prescribed above. Shall be attached to each stanchion in such a way that pulling on one section of the line between stanchions will not result in slack being taken up in the adjacent section before the stanchion tips over. Warning lines shall be erected around all sides of roof work areas. When mechanical equipment is being used, the warning line shall be erected not less than 6 feet (1.8 meters) from the roof edge parallel to the direction of mechanical equipment operation, and not less than 10 feet (3 meters) from the roof edge perpendicular to the direction of mechanical equipment operation.

When mechanical equipment is not being used, the warning line must be erected not less than 6 feet (1.8 meters) from the roof edge.

Products 1-15 of 15
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Yellow Perimeter Warning Flags
Meets OSHA Compliance Standard
Price: $6.95
Availability: In Stock
RACE Item #: 346-1010 -

    105 ft.longIncreases visibility of hazardous areas 18" x 12" yellow colored triangle flags Flags are spaced 22" apart500 lb. required break strength 12/box, 48/case

    Multi-Colored Perimeter Warning Flags
    Meets OSHA Compliance Standard
    Price: $6.95
    Availability: In Stock
    RACE Item #: 346-1011 -

      105 ft.longIncreases visibility of hazardous areas 18" x 12" multi-colored (red & yellow) triangle flags Flags are spaced 22" apart500 lb. required break strength 12/box, 48/case

      Red Perimeter Warning Flags
      Meets OSHA Compliance Standard
      Price: $6.95
      Availability: In Stock
      RACE Item #: 346-1012 -

        105 ft.longIncreases visibility of hazardous areas 18" x 12" red colored triangle flags Flags are spaced 22" apart500 lb. required break strength 12/box, 48/case

        Heavy Duty Yellow Perimeter Warning Flags
        Meets OSHA Compliance Standard.
        Price: $8.95
        Availability: In Stock
        RACE Item #: 346-1010-HD -

          105 ft. Heavy Duty material (6 mil) last longer than standard warning line flagsPennants are twice as thick compared to standard flags (6 mil vs 3 mil)Increases visibility of hazardous areas 18" x 12" pennantsFlags are spaced 22" apart500 lb. required break strength 12/box, 36/case

          Guardian 15227 Goose Single Stanchion Warning Line
          Spring loaded legs - no additional tools required
          Price: $159.95
          Availability: In Stock
          Guardian Fall Protection Item #: GUA-15227 -

            The Guardian Fall Protection "Goose Single Stanchion" is designed for use with a reusable warning line. This stanchion provides an easy to connect stem system on top for flag line connection and features spring loaded legs that make it easy to install. You should use one stanchion for every 50' to mark the warning line. This product weighs only 18 pounds and features a convenient side handle for easy carrying. FEATURES: Convenient side handle for easy carrying Easy to connect stem system on...

            Roofing Warning Line System, 30 lb. Base & Cone
            OSHA Compliant!
            Price: $29.95
            Availability: In Stock
            RACE Item #: RACE-WL-OSHA -

              OSHA CompliantSystem includes (1)Base & (1)Cone Large grip on the handle allows workers to easily pick up the cone and base Skid resistant, recycled rubber base provides stability and support Tiered cones are stackable Cone height not including handle: 39", Base weight: 30 lbs.Flag height: Tied at 39 inches, Sags to between 34 and 39 inches from walking/working surface.Approximate spacing ~ 25 ft. or as far as you can with flags above 34 inches. ...

              Roof Zone 65002 Folding Warning Line System
              Set of 4 Stanchions w/Flagging (33 ft. Spacing)
              Price: $339.95
              Availability: In Stock
              Roof Zone Item #: TDE-65002 -

                Help protect workers from dangerous areas around jobsite or roof. Includes 4 Stanchions and 105' of bright yellow pennants. This lightweight and compact warning line system is easier to set up and requires less storage space. Spring activated legs lock firmly into place, no lost poles or locking pins. Each stanchion has a built in handle for easier transporting to and from jobsite. 39" Folding Stanchions with Handles 105 ft. of Warning Legend Pendants Zinc Plated for Longer Life Spring...

                Roof Zone 65016 Ez-Stor Warning Line System
                OSHA compliant when used in accordance with instructions
                Price: $175.65
                Availability: In Stock
                Roof Zone Item #: TDE-65016 -

                  Compact, low cost warning line system for low slope commercial roofs. Constructed with heavy-duty galvanized steel tubing. Interlocking legs pin to the vertical stanchion tube for quick set up and tear down. Legs and stanchion tube nest with carrying handle for compact transport and storage. Includes: 4 stanchions with 100ft of warning line pennants. OSHA compliant when used in accordance with instructions as well as State, Local and Federal regulations.

                  Roof Zone 65017 Tri-leg Folding Warning Line System
                  OSHA compliant when used in accordance with instructions
                  Price: $325.95
                  Availability: In Stock
                  Roof Zone Item #: TDE-65017 -

                    3-leg folding warning line allows for faster set up and tear down on commercial roofing projects. Made with heavy-duty galvanized steel tube for longer life. Internal spring design permits legs to extend and retract quickly and easily, no parts to misplace or lose. Also features retractable carry handle. Includes: 4 stanchions with 100ft of warning line pennants. OSHA compliant when used in accordance with instructions as well as State, Local and Federal regulations.

                    Folding Warning Line
                    A Portable, Hand Carried Folding (Collapsible) Warning Line System, priced per stand
                    Price: $124.95
                    Availability: In Stock
                    Big Rock Supply Item #: WL-FOLDING-01 -

                      A Portable, Hand Carried Folding (Collapsible) Warning Line System For Asphalt or Metal Roofs Complies with OSHA’s (Std-29 CFR)(1926.502) (f) Quick set up Priced per stand Recommended spacing: Every 50 ft. 34 lbs. per stand Uses: Rooftops, construction sites, parking lots, high rise construction, manufacturing facilities, maintenance contractors, office buildings, amusement parks, airports, warehouses ...

                      Guardian 15225 Folding Warning Line Single Stanchion
                      Easy to store reusable warning line
                      Price: $149.95
                      Availability: In Stock
                      Guardian Fall Protection Item #: GUA-15225 -

                        The Guardian Fall Protection “Stanchion” is easy-to-store for use with a reusable warning line. You should use one stanchion for every fifty feet to mark the warning line. This product weighs only 23 pounds and stands 39" in height. FEATURES:Easy-to-storeFor reusable warning lineMaximum spacing is 50' apart Instructions Cut Sheet ...

                        Roof Zone 65004 Metal Roof Folding Warning Line System
                        Each leg comes with a rubber foot to prevent contact with metal roof's standing seam
                        Price: $378.25
                        Availability: In Stock
                        Roof Zone Item #: TDE-65004 -

                          Help protect workers from dangerous areas around jobsite or roof. Includes 4 Stanchions and 105' of bright yellow pennants. This lightweight and compact warning line system is easier to set up and requires less storage space. Spring activated legs lock firmly into place, no lost poles or locking pins. Each stanchion has a built in handle for easier transporting to and from jobsite.  39" Folding Stanchions with Handles 105 ft. of Warning Legend Pendants Zinc Plated for Longer Life Each leg...

                          Perimeter Warning Line System
                          Stanchion easily slips out of the weighted base plate for easy transport and storage,...
                          Price: $99.95
                          Availability: In Stock
                          Big Rock Supply Item #: WL-PERIMETER-01 -

                            Stanchion easily slips out of the weighted base plate for easy transport and storage For Asphalt or Metal Roofs Complies with OSHA’s (Std-29 CFR)(1926.502) (f) Quick set up Priced per stand Recommended spacing: Every 50 ft.Uses: Rooftops, construction sites, parking lots, high rise construction, manufacturing facilities, maintenance contractors, office buildings, amusement parks, airports, warehousesBase = 24" x 24" & 40 lbs. ...

                            Standard Warning Line System
                            Price: $409.95
                            Availability: In Stock
                            Roof Zone Item #: TDE-65001 -

                              Four 24” platforms with handles Four 38” line holders (stanchions) 100 ft. yellow flagging Hot dipped galvanized platforms and line holders for longer life FOB our warehouse

                              X-Warning Line, Set of 4 w/flags
                              OSHA compliant
                              Price: $188.65
                              Availability: In Stock
                              Acro Building Systems Item #: WL-21000 -

                                Designed for contractors the X-Warning line system is OSHA compliant and works on both roof and ground applications. Light weight yet sturdy, the steel X-Warning lines set up fast. Open the base, install the post and wrap the warning line! The X-Warning line ships in sets of 4 which include 130 feet of flagged warning line. Installation Instructions ...

                                Best Sellers

                                Yellow Perimeter Warning Flags
                                Meets OSHA Compliance Standard
                                Price: $6.95

                                105 ft.longIncreases visibility of hazardous areas 18" x 12" yellow colored triangle flags Flags are spaced 22" apart500 lb. required break strength 12/box, 48/case

                                Red Perimeter Warning Flags
                                Meets OSHA Compliance Standard
                                Price: $6.95

                                105 ft.longIncreases visibility of hazardous areas 18" x 12" red colored triangle flags Flags are spaced 22" apart500 lb. required break strength 12/box, 48/case

                                Roofing Warning Line System, 30 lb. Base & Cone
                                OSHA Compliant!
                                Price: $29.95

                                OSHA CompliantSystem includes (1)Base & (1)Cone Large grip on the handle allows workers to easily pick up the cone and base Skid resistant, recycled rubber base provides stability and support Tiered cones are stackable Cone height not including handle: 39", Base weight: 30 lbs.Flag height: Tied at 39 inches, Sags to between 34 and 39 inches from walking/working surface.Approximate spacing ~ 25 ft. or as far as you can with flags above 34 inches. ...

                                Multi-Colored Perimeter Warning Flags
                                Meets OSHA Compliance Standard
                                Price: $6.95

                                105 ft.longIncreases visibility of hazardous areas 18" x 12" multi-colored (red & yellow) triangle flags Flags are spaced 22" apart500 lb. required break strength 12/box, 48/case