What feature diverts water around a chimney on a roof?

The feature that diverts water around a chimney on a roof is known as a cricket. A cricket is a small, peaked structure that is typically built on the uphill side of a chimney or other roof protrusions. Its primary purpose is to direct rainwater away from the chimney, preventing water from pooling around it, which could lead to leaks and water damage over time. By facilitating proper drainage, a cricket helps to protect the integrity of the roofing materials and the structure beneath the chimney, enhancing overall roof performance and longevity. This design minimizes the risk of moisture infiltration and ensures that water flows away efficiently, reducing the potential for erosion and deterioration around the chimney area.