The height of the watertight portion of a gutter or profile above the design water level at maximum rain intensity. This is to allow for wave action or impediments in the sole of the channel that may otherwise cause overflowing.
A channel formed to collect and carry water away from a roof, variously described as internal, external, box, eaves, valley, secret, hidden, and raking. Spouting specifically refers to an external gutter.
An internal gutter that runs parallel to the roof pitch. This is commonly found beside penetrations positioned close to the eaves.
A gutter inside the building envelope. In the COP terminology, this applies specifically to those that run transverse to the roof pitch. See also Hidden Gutter, Secret Gutter.
Spouting that runs at an oblique angle to the roof.
An internal gutter that runs at an oblique angle to the roof pitch. This is commonly found where a roof runs into a raking wall or barge.