What role do drainage systems play in roofing?

Drainage systems are essential components of roofing that primarily serve to prevent water accumulation and damage. When rainwater or melting snow collects on a roof, it can lead to a variety of structural issues, including leaks, rotting materials, and compromised integrity of the roofing system. A well-designed drainage system directs water away from the roof surface, ensuring that it flows into appropriate outlets rather than pooling in vulnerable areas. This proactive management of water not only protects the roof but also extends the service life of both the roofing materials and the underlying structure.

While enhancing aesthetic value and controlling pests are beneficial aspects of a roofing system, they do not represent the primary function of drainage systems. Additionally, merely adding weight to the roof does not align with the purposeful and protective role that drainage systems fulfill. Instead, their critical function in water management is key to maintaining the overall health and longevity of roofing structures.