5-inch vs 6-inch gutters: which size do I need?
Do I need 5-inch or 6-inch gutters?
The number refers to the width of the gutter opening. A 5-inch K-style gutter is the standard on most homes. A 6-inch gutter is wider and carries noticeably more water, which matters on larger roofs or in areas with heavy downpours.
A good rule of thumb: choose 6-inch gutters if your roof is large, steeply pitched, has long unbroken runs, or if you live somewhere with intense rainfall. The larger channel also clogs less often because debris has more room to wash through.
Six-inch gutters pair with 3-inch by 4-inch downspouts, which move far more water than the 2-inch by 3-inch downspouts used with 5-inch gutters. Upgrading often costs only a little more per foot and can prevent overflow.
If you are unsure, our gutter size and capacity tool estimates the drainage area your roof sheds and tells you whether 5-inch or 6-inch is the safer call for your rainfall.
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GutterBudget provides cost ranges for planning only. Actual pricing varies by home, season, and contractor. Figures are gathered from public industry sources and shown for guidance. Always get written quotes from licensed local installers before you commit.