What is the recommended slope for guttering?

The recommended slope for guttering is 1/4 inch per foot. This slope ensures that water flows effectively toward the downspouts, preventing pooling and potential overflow. A slope that is too gentle, such as 1/16 inch per foot, may not allow for proper drainage, leading to stagnant water that can cause ice dams in colder climates or deterioration of the gutter system over time.

Conversely, opting for a steeper slope, such as 1/2 inch per foot, might result in excessively rapid water flow, which could increase the risk of debris being swept away rather than settling in the gutter, potentially leading to blockages downstream. Therefore, a slope of 1/4 inch per foot strikes the right balance for effective water drainage while minimizing the risks associated with both insufficient and excessive slopes. This standard is commonly accepted in roofing practices to help maintain the integrity of gutter systems.