Residential Gutter Sizes

K style gutters are the most common option and they provide optimum drainage for the majority of homes in most of the u s.

Residential gutter sizes. See photos below most residential gutters will measure approximately 5 inches across the top with the actual opening being approximately 4 5 inches. Gutter size refers to the opening at the top of the gutters and not to the depth of the gutter channel. A k style gutter in the same inch width can handle twice as much water as a half round gutter. 5 inch standard k style gutter shop 5 gutterbrush.

If a roof s various drainage areas call for different size gutters go for the biggest one k style. They come in 5 inch to 6 inch widths. Then use the chart below to see what size gutter you need. Regardless of the gutter profile the shape of the gutter a gutter is measured from the back to the front at the widest part.

Most residential gutter systems use 5 gutters or 6 gutters. Most times these style gutters are installed with rectangular downspouts. K style gutters have the capacity to move either 5 520 square feet for 5 inch gutters or 7 960 square feet for 6 inch gutters. A larger size gutter system will generally be more expensive.

Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. Half round gutters move less water and allow for 2 500 square feet. 5 inch 5 520 square feet.