Standard Roof Gutter Sizes

This is most common in the k style gutters.

Standard roof gutter sizes. The larger a gutter downspout the more water it can drain quickly. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. Measure your gutter across the top from the back where the gutter meets the home to the outer edge. Then use the chart below to see what size gutter you need.

However too large a gutter downspout can look unattractive. Five inch k style gutters six inch half round. There are two main common sizes of gutters and one of them is 5 inch. To limit the effects of thermal expansion in gutters 50 ft.

There are two most common type of residential gutters that we will talk about in this post for reliable roof gutter sizing. Most downspouts are rectangular but they can also be round or square. Gutter style gutters are typically k style and half round styles though custom profile are available. Half round 5 inch 2 500 square feet 6 inch 3 840 square feet.

15 m is a practical maximum gutter length to be served by a downspout. They can be 4 5 or 6 inches. 5 inch standard k style gutter shop 5 gutterbrush. K style sizes will typically range from 5 to 6.

Downspouts also come in different sizes such as 2 3 inches and 3 4 inches in size. If a roof s various drainage areas call for different size gutters go for the biggest one k style. Gutters come in different sizes. Gutter downspout sizes are 3 to 6 inches.

See photos below most residential gutters will measure approximately 5 inches across the top with the actual opening being approximately 4 5 inches. 5 inch 5 520 square feet. For most homes this will be a large enough gutter to handle the amount of water washing off of the roof but if you live in a particularly rainy area you will want to opt for wider downspouts to be installed with your new gutters. As a general rule egutter recommends for roof areas that exceed 2800 square feet a 6 k style size with a 3 x 4 downspout size would be appropriate.

The capacity of a sloped rectangular gutter may be approximated by using a gutter cross section area not less than that of a semicircular gutter and a depth to width ratio of at least 0 75. You should have enough gutter downspouts to effectively handle the size of your entire gutter system.