Should I Use 5 or 6 Inch Gutters in New Orleans, LA?

In New Orleans, 6-inch gutters are the safer choice when the roof is large, steep, or feeds valleys, while 5-inch gutters suit smaller, simpler rooflines. Industry drainage tables rate a 5-inch K-style profile at roughly 5,520 square feet and a 6-inch at roughly 7,960, both on a one-inch-per-hour basis that divides down as rain intensifies. Outlet size decides the outcome as often as the trough does.

At TurnKey Gutters, we size systems from the roof down rather than from the run of gutter on the wall. Capacity is a drainage-area calc