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Kee Guard / Safety Railing / Safety Guardrail / Roof Edge Guardrails / Fall Protection

Active vs Passive Fall Protection: How to Choose the Right System for Your Facility


“Let’s eat, Grandma!” vs “Let’s eat Grandma!” shows how the active voice of punctuation saves lives, while its passive omission has consequences.

For owners and facility managers responsible for work at height safety, choosing the right approach to fall protection systems in Canada starts with understanding two core methodologies: active and passive fall protection. 

Unlike the passive situation with Grandma (probably the wolf in “Little Red Riding Hood”), each plays a distinct role in reducing risk and saving lives, supporting fall protection compliance in Canada. The most effective solution depends on how your facility is accessed, how work is performed, and how much reliance you want to place on human behavior.

Kee Guard / Fall Protection / Roofers

Defining the Differences between Active and Passive

Passive fall protection systems are designed to prevent a fall from occurring in the first place—without requiring any action from the worker. There is no need to inspect and wear specialized Personal Protective Equipment (PPE), and no certified training is required. Once installed, passive systems are always in place and always protecting workers. 

Active fall protection systems, often referred to as a fall arrest system, require workers to take deliberate action by connecting PPE to a lifeline and a certified anchor. These systems do not prevent the fall but instead arrest it after it occurs, minimizing the risk of injury. Active systems are highly effective when properly designed and used—but they rely on training, inspection, and consistent worker compliance.

Since passive systems do not depend on training, harness use, or conscious decision-making, they are considered the highest level of protection and are especially effective where multiple workers or contractors access a roof or other elevated areas regularly.

Prime Examples of Passive Systems

Kee Guard / Safety Railing / Safety Guardrail / Roof Edge Guardrails / Fall Protection

Modular Guardrail Systems

Constructed of strong, durable, corrosion-resistant aluminum or galvanized steel, guardrails provide versatile fall protection at entrances, loading docks, staircases, mezzanines, catwalks, elevated work platforms, catwalks, workstations for large equipment, open edges, along pedestrian paths, and for a wide range of rooftop fall protection (e.g., roof perimeters, hatches, skylights, fixed ladders). They install without welding or drilling and can be reconfigured if the facility needs or layout changes.

  • Ground-based Railing Systems: Using slip-on pipe fittings available in a wide range of diameters and configurations, they are quick and easy to design and install for use throughout the facility. Options are available for ADA-compliant handrails.
  • Freestanding Rooftop Railings: Safety railing systems set in recycled PVC counterweight bases adapt to virtually any flat or low-slope roof layout and do not penetrate the roof’s surface. They protect workers at the roof’s edge, the most hazardous area on a rooftop.
Kee Gate / Self-Closing Gate / Safety Gate / Fall Protection / Safe Access

Self-closing Safety Gates

Featuring a spring-loaded mechanism that closes and latches as soon as the worker passes through, self-closing gates safeguard openings at critical access points, such as staircases, elevated work platforms, and roof hatch kits. Available in aluminum or galvanized steel in single-width, double-width, and double-height models, they integrate seamlessly into guardrail systems or the building’s structure. 

Non-penetrating rooftop walkway on metal roof Alberta

Anti-Slip Roof Walkways

Built with aluminum or glass-reinforced nylon treads set in sturdy, stable aluminum or galvanized steel frames, roof walkway systems delineate safe travel paths across rooftops. The treads are anti-slip and self-draining, avoiding the accumulation of rain, snow, or ice. They safeguard workers and protect the roof from repeated foot traffic. 

Main Examples of Active Systems

Kee Track Overhead Fall Protection for Heavy-Duty Truck Facility in Quebec

Modular Rigid Rail

A track-and-trolley system with a self-retracting lifeline, modular rigid rail systems enable workers to perform tasks with continuous tie-off from overhead, such as vehicle and machinery maintenance, and loading and unloading. They are easy to install and reposition, and particularly effective when users work at short free-fall distances.

Kee Line / Horizontal Lifeline / Safety Lifeline / Lifeline System

Horizontal Lifelines

Featuring galvanized and stainless steel components, horizontal lifeline systems provide continuous tie-off and compliant fall arrest along rooftops and other elevated workspaces. Up to three workers can be accommodated within 11.9-meter (39-ft.) spans between anchorages.

Kee Post rigid anchor tie-off offers a solution for securing workers to the building’s structure

Certified Anchorages

Anchor points are the backbone of any lifeline system and must withstand a 5000 lbs. (22.2 kN) load without permanent deformation. Applications include tieback anchors for window washing and façade maintenance, a single-point anchor for tie-off with a lanyard or retractable lifeline, and a brace for pairing with a horizontal lifeline system.

Key Factors to Consider When Selecting a System

The type of work being performed, frequency of access, user behaviour, and regulatory requirements all need to be considered when selecting fall protection systems.

Fall Arrest Anchors

Type & Frequency of Work

Flat or low-sloped roofs that require frequent access for HVAC maintenance, inspections, or snow removal benefit most from passive systems, which provide uninterrupted protection. In contrast, infrequent or short-duration tasks may justify the use of active fall protection systems. Window washing and façade maintenance on taller buildings also use active fall protection.

User Behaviour & Training

Passive systems significantly reduce the risk of human error. Active systems demand a strong safety culture, certified training, and enforcement to ensure workers inspect their equipment and are properly tied off at all times.

Kee Guard / Safety Railing / Safety Guardrail / Roof Edge Guardrails / Fall Protection

Nature of the Workspace

A clear roof perimeter is easily protected with guardrails. Congested rooftops with equipment, skylights, or changing work zones may require engineered fall protection products, such as a horizontal lifeline to provide flexibility and mobility.

Regulatory Compliance & Liability

Both active and passive systems can meet Canadian OHS requirements when professionally designed and installed. However, regulations prioritize hazard elimination and collective protection wherever feasible, often favoring passive solutions. Critical regulations to follow include the Canada Occupational Health and Safety Regulations (SOR/86-304) for guardrails and active fall protection equipment.

An Integrated, Engineered Approach

In practice, many facilities adopt a hybrid strategy. Passive roof fall protection—railings, walkways, and gates—protects common access areas, while active systems are used for specialized or irregular tasks. This integrated approach delivers reliable protection while minimizing reliance on perfect human behaviour.

Ultimately, the best system is one that aligns safety, compliance, and operational efficiency—keeping workers protected and productive, while ensuring everyone goes home safely at the end of the day to enjoy a fine dinner WITH Grandma.

The Hierarchy of Fall Protection | fall arrest | fall restraint | collective fall protection | work at height

The Hierarchy of Fall Protection

A truly comprehensive rooftop solution follows the Hierarchy of Fall Protection. An expert starts by inspecting the roof site for potential fall hazards. From there, a complete system solution and recommendations are created that descend down the four levels of the hierarchy, from simple, sensible approaches for eliminating risks all the way down to lifesaving personal protection systems. 

Collective Systems require no additional training to use. Fall Restraint and Fall Arrest Systems both require a high level of user competency, training and additional inspection to be used properly. 

The Hierarchy of Fall Protection Solutions

Fall Protection Systems for Working at Heights