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By Gutter Supply Chicago
Choosing between 5-inch and 6-inch gutters comes down to roof size, roof pitch and how much water the gutter has to carry. This guide explains the difference so you can pick the right size for each job in Chicago.
Use 5-inch K-style gutters for most average-size homes. Choose 6-inch gutters for large or steep roofs, long runs, roofs with valleys that dump water in one spot, and commercial buildings. A 6-inch gutter carries noticeably more water and is usually paired with larger 3x4 downspouts.
| 5-Inch K-Style | 6-Inch K-Style | |
|---|---|---|
| Typical use | Most single-family homes | Large, steep or complex roofs and commercial jobs |
| Water capacity | Standard | Higher |
| Common downspout | 2x3 inch | 3x4 inch |
| Look | Smaller profile | Larger profile, more visible |
| Material cost | Lower | Higher |
The more roof area that drains into a gutter, the more water it has to carry. Steep roofs push water faster, and valleys can concentrate it in one corner. On those jobs a 5-inch gutter can overflow during heavy Chicago storms, even if the home is not especially large.
The downspout is often the real bottleneck. A 6-inch gutter with small downspouts will still overflow. Pair 6-inch gutters with 3x4 inch downspouts and plan enough outlets for the roof area. Order matching end caps and elbows for the size you choose.
A larger gutter holds more water, snow and ice, which means more weight. Use sturdy hangers with closer spacing on 6-inch runs, and consider a heavier coil gauge. Our gutter coil gauge guide explains the options.
Gutter Supply Chicago supplies aluminum gutter coil and gutters for both sizes, with job-site delivery across our service area. Request a quote or call (312) 823-7355 to confirm sizes in stock.
For roofing and drainage best practices, see the National Roofing Contractors Association.
Not always. 6-inch gutters carry more water, so they are better for large or steep roofs. For an average home, 5-inch gutters are usually enough and cost less.
6-inch gutters are usually paired with 3x4 inch downspouts. 5-inch gutters usually use 2x3 inch downspouts.
Yes. Some contractors use 6-inch gutters only on the sections that drain the largest roof areas, and 5-inch gutters elsewhere.
Gutter Supply Chicago supplies both sizes with same-day quotes and job-site delivery. Call (312) 823-7355.
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