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Roof Horizontal Lifeline

for Various Roof Types
Roof Horizontal Lifeline
CAI Safety specializes in OSHA-compliant roof horizontal lifeline systems. This fall protection system can be used for continuous fall restraint or fall arrest coverage around roof leading edges and openings.
A feature of our roof horizontal lifeline system includes a 100% pass-through which allows the user to walk uninterrupted over the entire span of a lifeline.

Fall Protection Challenge

When you need access to large sections of the roof to perform, maintenance, repair or inspections, a fall protection system is required per OSHA. A guardrail system may not be cost effective and multiple anchor points may be an inefficient way to move about your roof.

Fall Protection Solution

A horizontal lifeline fall protection system allows the user to access large spans of the roof in a safe and efficient manner. The pass-through feature of the horizontal lifeline means the user never has to disconnect from the fall protection system when navigating around anchors. The roof horizontal lifeline can be positioned to keep the user in fall arrest or restraint based on your access requirements.

Features & Benefits
Roof Horizontal Lifeline


CAI Fall protection experts have implemented Horizontal Lifelines for applications including the maintenance and inspection of the following: roofs, HVAC, skylights, solar panels, drains, gutters, security cameras, communication systems and many more!

Roof Horizontal Lifeline


One of the major benefits of a horizontal lifeline system is that a skilled designer will place the system in a manner that provides continuous fall protection from the roof access point such as a hatch or ladder to the parts of the roof requiring access such as HVAC equipment.

Roof Horizontal Lifeline


The horizontal lifeline system will be designed to be supported from your roof structure. CAI fall protection systems have been installed on various roof types such as standing seam, composite, Membrane, Built-up, Concrete, Metal, and Wood Sheeting.

Roof Horizontal Lifeline


The horizontal lifeline is 316 stainless cable as well as most of the components to provide a long lifespan in outdoor environments.

Roof Horizontal Lifeline


A qualified person will design the roof horizontal lifeline system that complies with the regulations and allows you to be productive. The qualified person is required to design your fall protection system as OSHA 29 CFR 1926.32(l) states.

Roof Horizontal Lifeline


CAI horizontal lifeline systems have a pass-through feature. This allows the user continuous uninterrupted access by means of a special machined trolley that safely transitions over intermediate anchors without having to disconnect from the fall protection system.

Roof Horizontal Lifeline


By using energy absorbing posts or installing in-line shock absorbers we reduce the forces of the fall on your roof to protect the structure and the user.

Roof Horizontal Lifeline


Besides the cable horizontal lifeline we can also provide a rigid track system that is preferred for its aesthetics, low profile and reduced fall clearance features.

Roof HLL - Standing Seamicon Roof HLL - Composite Over Concreteicon Roof HLL - Composite Over Steel Deckicon
Aluminum clamps are designed to attach to the standing seam without making any roof penetrations. Installs into concrete decking roofs by penetrating with concrete bolts. Anchors to built up or composite steel panel roofs with penetrating toggle bolts.
Roof HLL - Wood Deck Build Upicon Roof HLL - Wood Block Build Upicon Roof HLL - Trapezoidal Insulated Panelicon
Installs on wood block built up roof types and penetrated with lag bolts to fasten the anchor to the roof. Installs on wood deck built up roof types and penetrated with lag bolts to fasten the anchor to the roof. Designed to attach to metal sheathing or trapezoidal roofs with penetrating system fasteners.

A roof horizontal lifeline system is much more than a cable strung between two anchors. Here are the considerations we make when designing a fall protection system for you:

1. The horizontal lifeline system will be placed in a manner to afford the user fall protection from the roof access point such as a hatch or ladder to the parts of the roof requiring access such as drains.
2. Is the system to be rated for fall restraint or fall arrest? This will play a factor in the placement of the system from the leading edge, type of tie-off equipment and rescue conditions.

a. Roof Horizontal Lifeline Definition of fall restraint: Secure the worker to an anchor or horizontal lifeline using a lanyard short enough to prevent the workers center of gravity from reaching the leading edge hazard.
b. Roof Horizontal Lifeline Definition of fall arrest: Systems designed to stop a workers fall after a fall has begun.
3. ​

Roof Horizontal Lifeline - Fall Clearance Fall clearance: The overall fall distance is dictated by the deflection in the cable, shock absorber deployment, lanyard/self-retracting lifeline deployment and harness stretch. We factor all these variables in the design of your system to make sure that in the event of a fall we have the required clearance to stop the fall.
4. The method of attaching the anchor system to your roof structure in a manner that distributes the loads of the fall and protects the structural integrity of your roof. See ‘Roof Attachment Types’ tab for additional information.
5. If the system is determined to be fall arrest there has to be a rescue plan in place per OSHA. CAI Safety can assist you in developing the rescue plan.
Outlining the annual inspection and certification requirements of your roof horizontal lifeline.

All these considerations will be detailed and specified in custom engineered drawings that we will prepare for your roof horizontal lifeline system.

Increasing the distance between anchor and work area increases possibility of a swing fall. Swing falls are hazardous and can cause injury or death if not properly controlled. Swing fall are caused when a user attaches to an anchor or horizontal lifeline and then approaches a leading edge at an angle instead of being in parallel with a horizontal lifeline.

During a fall the user will swing like a pendulum to the center of gravity and this swing adds to the fall distance and the high likelihood of impacting an object before the fall arrest equipment can start to work.

Chance of swing fall increased Chance of swing fall decreased
Roof Horizontal Lifeline - Swing Fall Roof Horizontal Lifeline - Swing Fall
Roof Horizontal Lifeline - Components
Fall Protection Anchor: Attaches the fall protection system to your roof structure and also safely disperses the loads on the roof structure. See roof attachment types tab for additional information.
Horizontal Lifeline: Constructed of 316 stainless steel cable or aluminum rigid track. Allows the user to safety traverse distances while maintaining 100% ties off.
Trolley: Glides along the horizontal lifeline and comments to the user’s tie-off equipment.
Tie-Off: This can be a lanyard, self-retracting lifeline or rope grab system. The choice of tie-off equipment is based on if the system is intended for fall restraint or fall arrest and how far from the lifeline does the user intend to work.
Full-body Harness: A full body harness helps to reduce the forces of a fall on the user’s body and keeps the victim upright after a fall.
For additional questions and information, call us at
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