What role do drains play in roofing systems?

Drains are a critical component of roofing systems primarily because they play a vital role in stormwater management. Effective drainage helps to prevent the accumulation of water on the roof surface, which can lead to various issues, including leaks, structural damage, and deterioration of roofing materials over time. By directing rainwater away from the roof, drains help maintain the integrity of the roofing system and ensure its longevity.

Although other aspects such as aesthetics, insulation performance, and thermal resistance are important for a roofing system, they are not the primary function of drains. Aesthetics can enhance the visual appeal of a building but are unrelated to the functionality of drains. Similarly, while insulation performance and thermal resistance are crucial for energy efficiency, they are achieved through insulation materials rather than drainage features. Thus, the primary and most critical function of drains is indeed to assist in stormwater management, which is essential for the overall health and durability of the roofing system.