Roof Warning Line System

The VSS SafetyLine is a warning line systems used to delimit a visual safety perimeter between work zones at height. The VSS SafetyLine is 100 % compliant with the CNBC and OSHA permanent warning line standards.


  • Permanent visual delimitation of a safety perimeter
  • Modular: can be combined with Delta Prevention guardrails to secure the entire roof at low cost
  • Scalable: can be converted to a guardrail
  • Freestanding: 100 % without perforation
  • Complies with OSHA permanent warning line standards
  • Can not replace the use of an anti-fall system
  • Quick setup
  • Compliance report included
  • 10 year warranty
  • Made in Canada
  • Meets CBNC, CNESST, OSHA standards


Respect all

Our roof fall protection products are certified by an independent engineering firm and meet CNBC and OSHA standards.

to last

With our patented recycled rubber counterweight base and aluminum components, our system offers ultimate resistance to rust and deterioration.

Made in

Our eco-responsible products are 100% designed and manufactured in Canada.

10 year

Peace of mind thanks to the best warranty on the market.

Converting your warning line systems to a guardrail

Obviously, your needs will change over time. That’s why we’ve developed a warning line systems that can easily be converted to a roof guardrail with 100 % shared components. By replacing steel cables with our traditional aluminum tubes, we are transforming visual protection into complete fall protection for a fraction of the cost!


– for Canadian Building Standard (Comply with Quebec OHS)

In this configuration, the VSS SafetyLine have one base per vertical post. The posts at the ends of the bump line must have two bases.The maximum spacing between two posts is 8′ and only one yellow nylon flag is required between the vertical posts. This is the configuration of the bump line according to the RSST.


– for OSHA

In this configuration, the VSS SafetyLine must have one base per vertical post and the maximum spacing between two posts is 25′. This is the configuration of the bump line according to the OSHA (The Occupational Safety and Health Administration of United States Department of Labor).

A warning line systems with no perforation of the membrane

Maintaining the integrity of the waterproof membrane is essential to protect the building envelope. That’s why the VSS SafetyLine warning line systems is freestanding: its base acts as a counterweight, enabling it to comply with the permanent warning line standards.

Guaranteed durability

To eliminate rust, inevitable with a steel base, or the risk of breakage of a concrete base, our warning line systems use an eco-friendly and patented recycled rubber base. Extremely resistant to shock and temperature changes, these 50 lb bases provide maximum grip on all types of flat roofs.

Choose a collective and permanent protection

A permanent fall protection solution that ensures safety for all users without PPE or annual certification.

Tuyaux et poteaux verticaux :

  • Aluminium 6061-T6 
  • Ultimate corrosion resistance
  • No risk of peeling paint
  • Ultra-light for easy installation


  • Recycled eco-friendly rubber
  • Patented design
  • No corrosion or rust stain on the membrane
  • No cracking and spilling of filling material
  • Very high adhesion to the roof membrane
  • Can be installed directly on the roof without sacrificing a membrane
  • Moulded handle for easy handling

Technical Data Sheet – Warning Line System

Maximum distance between poles : 96″
Maximum length – start / end of line: 96″
Maximum cable height allowed: 39″ from the ground
Minimum cable height allowed: 34″ from the ground
Cable- Material : steel, yellow nylon coating
Cable- Diameter ¼”
Flag – Material yellow nylon
Maximum distance between each flag: 72″
Counterweight : 50 lb/base
Counterweight – Material : recycled rubber
Tubing and posts : Anodized aluminum 6061-T6
Outside diameter 1,9″
Fittings – Material : galvanized steel
Hardware / Material : stainless steel
Tightening Torque : 30 lb/pi (CL201: 20 lb/pi)
Use : permanente, temporaire
Design patent : #162620
Waranty : 10 years
Complies with : CSTC: and OSHA: 1926.502(f)

Accessories – Warning Line System


# ITEM : CL167
Material : galvanized steel

This dual connector connects two straight sections of a warning line.


90 ° Connector

# ITEM : CL168
Material : galvanized steel

This connector connects two warning line sections and creates a 90° corner.


Simple connector

# ITEM : CL173
Material : galvanized steel

This connector is used at the beginning and end of each permanent warning line. It can be installed on an independent vertical pole or on a Delta Prevention guardrail section.


Tell us about your project! Our technical team will contact you in 24-48 hours.


Delta Prevention is the first manufacturer to offer you a collective and eco-conscious fall protection system. Our products are made of recycled rubber from clean energy using locally sourced materials.