Standard Rain Gutter Dimensions

Most downspouts are rectangular but they can also be round or square.

Standard rain gutter dimensions.

Measure your gutter across the top from the back where the gutter meets the home to the outer edge. It also comes in sizes 2 3 and 3 4. If a roof s various drainage areas call for different size gutters go for the biggest one k style. 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. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. Gutters come in different sizes. According to this old house while 5 inch k style gutters and 6 inch half rounds are usually suitable for homes houses with big steep roofs or those located in climates prone to heavy downpours may need wider gutters and extra downspouts to keep rainwater from overflowing.

Then use the chart below to see what size gutter you need. They can be 4 5 or 6 inches. 7 and greater are appropriate for churches and larger commercial buildings. K style sizes will typically range from 5 to 6.

The larger a gutter downspout the more water it can drain quickly. 6 inch 7 960 square feet. 5 inch 5 520 square feet. See photos below most residential gutters will measure approximately 5 inches across the top with the actual opening being approximately 4 5 inches.

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. Gutters come in different sizes. 5 inch standard k style gutter shop 5 gutterbrush. Downspouts also come in different sizes such as 2 3 inches and 3 4 inches in size.