When considering the outdoor elements roof skylights are subject to, the skylight can become brittle over time. Even those Skylights that are rated to hold the weight of a person walking on them are prone to degrading over time, with the risk of cracking or breaking. As a result, a slip on the roof can lead to a fall through the skylight. During winter, skylights can be covered by snow, making the hazard invisible while navigating the rooftop. For this reason, it is important that we understand the safety risks of having roof skylights and proactively protect roof workers from a fall.