5-Inch vs. 6-Inch Seamless Gutters: Which Does Your Missouri Home Need?
If you're pricing new gutters, one of the first questions you'll hit is size: 5-inch or 6-inch? Both are seamless, both come in the same colors, and both are installed the same day - but they handle water very differently. Here's how to tell which one your home actually needs.
The Short Answer
A 5-inch seamless gutter is the residential standard and handles the roof area of most homes just fine. A 6-inch gutter carries roughly 40% more water and is the better fit for larger roofs, steep pitches, metal roofs, and buildings like shops, barns, and commercial properties. In the Ozarks - where a spring thunderstorm can drop an inch of rain in under an hour - roof size and pitch matter more than anywhere with gentler weather.
Side by Side
| 5-Inch Seamless | 6-Inch Seamless | |
|---|---|---|
| Best for | Most single-family homes with asphalt shingle roofs | Large roofs, steep pitches, metal roofs, shops & commercial buildings |
| Water capacity | Handles typical residential roof runoff | Roughly 40% more capacity for heavy runoff |
| Downspouts | Standard downspouts | Larger downspouts that move more water and clog less |
| Metal roofs | Can be overwhelmed — water races off metal fast | Recommended — built for the speed of metal-roof runoff |
| Appearance | Slimmer profile | Slightly larger profile; proportional on bigger buildings |
When 5-Inch Is the Right Call
For the majority of homes in southwest Missouri, 5-inch seamless gutters are exactly right. If your home has an asphalt shingle roof of average size and a moderate pitch, a properly installed 5-inch system — leveled hangers, correct slope, well-placed downspouts — will move every drop where it belongs. Installation quality matters more than an extra inch: a poorly pitched 6-inch gutter overflows before a correctly pitched 5-inch one does.
When to Step Up to 6-Inch
- Metal roofs — water sheets off metal much faster than shingles, and it can overshoot a 5-inch gutter entirely
- Large or steep roofs — more surface and more pitch mean more water arriving faster
- Shops, barns & commercial buildings — long straight rooflines collect enormous runoff
- Long roof runs with few downspouts — the extra capacity buys time for water to travel
- Homes under heavy tree cover — larger gutters and downspouts are more forgiving of debris (though gutter covers are the real fix for that)
Not sure which your roof needs? That's what the free quote is for — we measure the roof, look at the pitch and the downspout layout, and tell you straight which size the building calls for. No upselling an inch you don't need.
Either Way, Seamless Matters More
Whichever size fits, the bigger upgrade over old sectional gutters is the word seamless. Sectional gutters leak at every joint; seamless gutters are custom-formed on site in one continuous run, so the only seams are at the corners. Pair either size with LeavesOut gutter covers and the system stays clog-free with a 90-day money-back guarantee on the covers.