What is a "drainage plan" in roofing systems?

A drainage plan in roofing systems is fundamentally about ensuring that water flows off the roof effectively to prevent pooling. This aspect is critical because standing water can lead to various issues such as leaks, structural damage, and deterioration of roofing materials over time. The drainage plan includes the strategic placement of roofing features such as scuppers, gutters, downspouts, and roof slopes that facilitate efficient water movement from the roof surface to the ground or drainage systems.

When creating a roofing system, the primary focus must be on how to manage water runoff, especially in regions with heavy rainfall. A well-designed drainage system can extend the life of the roof and maintain the integrity of the building, highlighting the importance of a drainage plan in construction and maintenance practices for roofing systems.