Standard Gutter Downspout Sizes

Adding additional sections of gutter reduces the length of each section and will reduce the gutter size.

Standard gutter downspout sizes.

Round downspouts come in various sizes and colors and mostly used with half round gutters. However too large a gutter downspout can look unattractive. The standard is about inch per 10 feet. Downspouts are commonly 2 x 3 inches and 3 x 4 inches in size or 3 or 4 inches in diameter.

In this example your maximum spacing of downspouts should be 40. In sizing downspouts the following considerations apply. The larger a gutter downspout the more water it can drain quickly. Compatible with 2 in.

The size of the downspout should be constant through out its length. Most downspouts are rectangular but they can also be round or square. It also comes in sizes 2 3 and. Gutters and gutter downspout sizes.

This type of down spout is considered the standard downspout style in households and is used with a 5 k style guttering system. You should have enough gutter downspouts to effectively handle the size of your entire gutter system. They are made from aluminum vinyl zinc copper or steel. More product details close.

The sizes available in this style are 3 4 5 and 6. Metal or vinyl downspouts this versatile downspout has a lifetime guarantee. Increasing the pitch increases a gutter s handling capacity but the gutter may look askew over a long run. The above recommendations assume that you have properly sized downspouts every 40 feet.

When determining the size of a home s gutter system a homeowner should consider the area s rainfall. The above recommendations assume that you have properly sized downspouts every 40 feet. Continue reading to learn more about what to consider when figuring the right gutter downspout sizes. Also the gutter width in relation to height may also be adjusted.

Gutters are typically round shape or k style but other designs are available. 5 inches and 6 inches gutters are the most common sizes installed for. The standard is about inch per 10 feet. As with gutters a downspout s capacity must match or exceed the expected runoff.

Downspouts of less than 7 00 sq in 4515 sq mm cross section should not be used except for small areas such as porches and canopies. Increase the pitch of the gutter. By reducing the downspout spacing to perhaps 35lf you could use a 6 gutter with 9 4 x6 downspouts in lieu of an 8 system. Downspouts should be constructed with conductor.

Use the downspout to redirect runoff and help prevent garden erosion and foundation damage. It is easy to see that you can vary gutter size downspout size and downspout spacing to properly size a gutter downspout system.