Anything larger than six inches would be meant for churches or commercial buildings. If your roof area is under 5,500 square feet, a five-inch K-style gutter is recommended. If your roof area is between 5,500 and 7,900 square feet, go with a six-inch gutter instead.
How do I know what size gutters to buy?
How to Determine Gutter Dimensions for Your Home
- Calculate square footage of the roof surface. Measure the lengths and widths of each area of your roof. ...
- Get the pitch of your roof. ...
- Multiply the roof square footage by a number determined by the roof pitch. ...
- Use the resulting number to choose gutter measurements.
Should I get 5 or 6 inch gutters?
6-inch gutters can handle almost 50% more water than 5-inch gutters. They are installed with bigger 3”x4” downspouts for better water management. 6-inch gutters are less likely to get clogged up because they can handle more water flow, and they come with a bigger outlet. ... Otherwise, go for 6” gutters.
