What situation poses the greatest risk to employees working on roofs?

High winds or lightning pose a significant risk to employees working on roofs due to the inherent dangers associated with these weather conditions. Wind can make it difficult for workers to maintain their balance and stability while on a roof, increasing the likelihood of falls, which are one of the leading causes of injuries in construction. Additionally, high winds can blow tools or materials off the roof, creating hazards for both the workers on the roof and those below.

Lightning, on the other hand, presents an immediate and severe threat. During thunderstorms, metal roofing materials can attract lightning strikes, posing risks of serious injury or even fatality to workers on-site. It’s crucial for roofing supervisors and safety managers to monitor weather conditions and halt work during such high-risk scenarios.

While high temperatures can lead to heat-related illnesses, heavy rainfall or fog can cause slippery conditions, and poor lighting can contribute to accidents, the combination of high winds and lightning creates a more immediate and dangerous environment for roof workers, making it the situation that poses the greatest risk.