Which item is typically used to control gravel in a flat roof system?

In a flat roof system, a metal gravel stop is the item typically used to control gravel. This component is essential for managing the distribution and location of gravel on the roof surface. The gravel serves multiple purposes, such as providing ballast to hold down the roofing membrane, protecting it from UV exposure, and aiding in drainage by preventing the accumulation of water.

The metal gravel stop is installed at the edges of the flat roof, effectively containing the gravel within a defined area and preventing it from spilling over the sides. This containment is crucial for maintaining the integrity of the roof and ensuring that the gravel performs its intended functions without causing damage to the building. Its durable construction also enhances the roof's longevity by preventing erosion and other forms of wear from the elements.

Understanding the role of a metal gravel stop clarifies its importance in flat roof systems, especially compared to other components that might not serve the same purpose in controlling and managing gravel.