What does the term "grade" refer to in roofing?

In roofing, the term "grade" primarily refers to ground level or the elevation at a certain point. Understanding this concept is crucial as it relates to drainage and water flow on a roofing system. Proper grade ensures that water flows away from the structure rather than accumulating, which can lead to leaks or other structural issues. This concept is especially relevant when designing and installing roofing systems, as it plays a vital role in maintaining the roof's integrity and preventing water damage.

While other terms associated with roofing might relate to angles of the structure or the quality and specifications of materials used, "grade" is specifically tied to elevation and ensuring that the roofing system functions effectively in terms of water management.