5-inch, 6-inch or 8-inch: sized to the roof, not the catalog.
Five-inch gutters handle most single-story homes. Six-inch carries far more water per foot and suits steep or large roofs where a summer storm would overwhelm a standard run. Eight-inch is for oversized rooflines and commercial buildings. We measure the roof area draining into each run and pick the size that will not overflow in July.


