Continuing with our example in the last step we know our gutter downspout system may be subject to as much as 1 880 gallons per minute.
Aluminum gutter sizes.
They are low maintenance reliable lightweight and easy to install.
Most times these style gutters are installed with rectangular downspouts.
Aluminum gutters come in three standard thicknesses 025 inch 027 inch and 032 inch.
Multiply drainage area by 1 1.
Painted aluminum k style gutters are among the most popular gutter profile for homeowners across the country.
Multiply drainage area by 1 3.
12 inches or more.
Practically speaking though a common gutter size is usually selected and downspout spacing is equal for most buildings.
They come in 5 inch to 6 inch widths.
For design purposes and aesthetics let s assume you have selected an 8 gutter.
Calculate your roof pitch.
K style gutters are the most common option and they provide optimum drainage for the majority of homes in most of the u s.
The front of the gutter is usually curved and resembles crown moulding.