VISUAL BOUNDARY MARKING

Make a planned boundary clearly visible.

Review permanent visual warning lines for a site-defined boundary. Start with the layout, access route and work activity.

Request a recommendation See what we need
PermaLine metal flagging and support bases
Visual warning lines · Dakota Safety

THE SITUATION

Define the boundary and the work taking place nearby.

Visual marking helps identify a planned boundary, but it cannot physically stop a person from crossing it. Consider its role within the wider site protection plan.

FIND THE RIGHT APPROACH

Review permanent visual boundary marking.

Start with the site layout and the task. Your safety team should determine where visual marking is appropriate and where a physical barrier or other protection is needed.

PermaLine Visual Warning Line System

Permanent visual warning line

BEST FOR

Site-defined zones where the protection plan calls for visible boundary marking.

PermaLine uses durable metal flags and a non-penetrating support arrangement. Confirm surface suitability, layout and installation requirements. It is not a guardrail.

PermaLine Visual Warning Line System →

PLAN YOUR PROJECT

What do we need for a recommendation?

Send photos and a marked-up layout of the proposed boundary. Include these details for a project review.

  • Boundary length, corners and proposed access points.
  • Surface construction, condition and available support locations.
  • Nearby roof edges, openings, equipment and walking routes.
  • Work activities, frequency of access and the site’s protection plan.
  • Exposure, maintenance access and project timeline.
Discuss your project

PermaLine is a visual warning line, not a motion-stopping device. It does not replace guardrails or personal fall protection where these are needed. Have the application and boundary placement reviewed for the actual task and site.

PRODUCT RESOURCES

Find specifications and supporting documents.

Review current PermaLine product information and installation requirements. Confirm the proposed layout with your project team before ordering.

View PermaLine information →
View supporting documents →