What is the primary function of a roof scupper?

The primary function of a roof scupper is to allow rainwater drainage. Scuppers are essential elements in roofing systems, designed to channel accumulated water off flat or low-slope roofs and prevent water pooling, which can lead to structural damage over time. By directing rainwater away from the roof surface, scuppers help maintain the integrity of the roofing materials and the underlying structure.

In addition to this critical function, scuppers can also help manage the flow of water during heavy rain events, enhancing the overall drainage system's effectiveness. They work in conjunction with other drainage components, such as gutters and downspouts, to ensure that excess water is efficiently moved away from the building.

While they may contribute indirectly to other aspects, such as supporting roofing materials and potentially aiding ventilation through air circulation effects, their primary role remains focused on facilitating proper water drainage. Understanding the function of scuppers is vital for anyone involved in construction or building maintenance, as it plays a key role in protecting the longevity and safety of structures.