Standard Roof Gutter Sizes

You should have enough gutter downspouts to effectively handle the size of your entire gutter system.

Standard roof gutter sizes.

Most downspouts are rectangular but they can also be round or square. Gutter downspout sizes are 3 to 6 inches. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. 15 m is a practical maximum gutter length to be served by a downspout.

Gutter style gutters are typically k style and half round styles though custom profile are available. There are two main common sizes of gutters and one of them is 5 inch. Half round 5 inch 2 500 square feet 6 inch 3 840 square feet. Metal corrosion issues all gutter and components must be the same to prevent electrolysis or electrical.

Downspouts also come in different sizes such as 2 3 inches and 3 4 inches in size. See photos below most residential gutters will measure approximately 5 inches across the top with the actual opening being approximately 4 5 inches. Then use the chart below to see what size gutter you need. They can be 4 5 or 6 inches.

If a roof s various drainage areas call for different size gutters go for the biggest one k style. 5 inch standard k style gutter shop 5 gutterbrush. There are two most common type of residential gutters that we will talk about in this post for reliable roof gutter sizing. 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 larger a gutter downspout the more water it can drain quickly. To limit the effects of thermal expansion in gutters 50 ft. 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. 7 and greater are appropriate for churches and larger commercial buildings.

6 inch 7 960 square feet. Gutters come in different sizes. Five inch k style gutters six inch half round. 5 inch 5 520 square feet.

K style sizes will typically range from 5 to 6. Measure your gutter across the top from the back where the gutter meets the home to the outer edge.