Standard Sizing
Residential gutters come in two main sizes: 5-inch and 6-inch (measured across the top opening). The standard K-style profile is used for most homes. Downspouts are typically 2x3 inches for 5-inch gutters and 3x4 inches for 6-inch systems.
When 5-Inch Works
For most standard residential homes with normal roof areas and typical pitch, 5-inch gutters handle East Tennessee rainfall adequately. This is the most common size installed and works well for the majority of homes.
When to Choose 6-Inch
Larger homes with more roof area, steep roof pitches that accelerate water flow, areas where multiple roof planes converge into a single gutter run, and homes in higher-rainfall mountain areas may all benefit from 6-inch gutters.
6-inch gutters handle about 40% more water volume than 5-inch. For homes that need the extra capacity, the cost difference is modest compared to the performance improvement.
Our Approach
We look at each home on its own: roof area, pitch, how much rain you get, and where the downspouts can go. Then we recommend the size that fits your home.