At first glance, a hole in the roof seems like a bad idea, but rooftop openings have served practical purposes for centuries. In Roman, Byzantine, Renaissance, and Neoclassical architecture, the “oculus” (circular opening in the center of a dome) enabled light to enter the building and illuminate the inside as well as provide ventilation.

In modern times, skylights allow natural light to brighten the interior and also offer ventilation. Roof hatches are another type of opening in a roof. They enable egress for maintenance and repair workers to service HVAC systems and other equipment.

Fall protection systems for workers using roof hatches and traversing a rooftop dotted with skylights also merit more than a first glance. An open hatch is an obvious hazard, and it should never be assumed that a skylight can support the weight of even one worker who missteps, trips, or falls.

A domed skylight has several attributes. The round or curved shape helps reduce glare from incoming light and provides a more even distribution of softer light within the interior space. It is harder to see through a dome compared to a flat surface. Water drains more easily. Many roof domes, however, are constructed of plastic and cannot support the weight of a worker. Skylight fall protection is needed.

For flat membrane roofs, a modular guardrail system surrounding the dome will prevent workers from stepping onto the skylight. The railing posts are locked in PVC bases with clamping rings that fit securely into the skylight base. The assembly does not penetrate the membrane, and the railings and connecting components are constructed of aluminum or galvanized steel for durability and corrosion resistance. 

The modular, bespoke design adapts to any size dome and can be expanded. The railing system can also be powder-coated for greater visibility and safety or aesthetic considerations.

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