What does ponding refer to in roofing?

Ponding refers specifically to the accumulation of water at low points on a roof. This phenomenon occurs when there are dips or areas where the roof is not uniformly sloped, leading to the stagnant water remaining on the surface instead of draining away efficiently. Ponding can pose significant risks to roofing systems, as prolonged exposure to standing water can lead to material deterioration, increased weight on the structure, and potential leaks or other failures in the roofing system.

Understanding ponding is crucial for roofing professionals, as it can guide them in designing drainage solutions and ensuring the longevity of the roof. Properly addressing areas that are prone to ponding is an essential aspect of roof maintenance and installation practices.