Selecting Gutter Size

Compare the adjusted square footage to the two most common gutter types.

Selecting gutter size.

You can also add additional or oversized downspouts to improve drainage if necessary. Gutter and downspout size is based on the size of the roof and amount and duration of rainfall in your area. Adding additional downspouts will require less gutter and downspout volume resulting in smaller gutters downspouts. Larger gutters and downspouts provide better drainage and clog less than smaller sizes.

When selecting and sizing gutters for such structures consider. Two sizes of gutters are the most popular in standard homes five inch k style gutters and six inch half round round gutters. Then use the chart below to see what size gutter you need. If a roof s various drainage areas call for different size gutters go for the biggest one k style.

The type of gutters you buy and the size of the gutter pieces you buy should be able to handle all the rain your home gets in a year. For roofs levels that drain onto lower roofs. 5 inch 5 520 square feet. It should be noted however that houses with roofs that are large and steep or in some.

Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. 6 inch 7 960 square feet. 5 inch 5 520 square feet.

But don t overlook performance and quality which will over time. A standard 5 inch k style gutter can handle annual rainfall for a majority of houses in most of the u s. Then use the information below to see what size gutter you need. Choose the right gutters there is so much to consider when choosing new gutters including shape material and cost.

Each of these sizes are sufficient for most houses in most areas of the country. Choosing the right gutter size gutter sizing. Gutters also come in sizes ranging from 3 to 6 with downspouts available from 2 x 3 to 4 x 5. If a roof s various drainage areas call for different size gutters go for the biggest one k style.

Please lower the maximum spacing between downspouts to see this effect. The gutter and downspout size required is highly dependent on the amount of gutter and the spacing of the downspouts. The lowest roof area in elevation should include the area of roofs above that drain onto it.