Standard Roof Gutter Sizes

Gutter style gutters are typically k style and half round styles though custom profile are available.

Standard roof gutter sizes.

15 m is a practical maximum gutter length to be served by a downspout. There are two most common type of residential gutters that we will talk about in this post for reliable roof gutter sizing. 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. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.

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. However too large a gutter downspout can look unattractive. Gutter downspout sizes are 3 to 6 inches. Downspouts also come in different sizes such as 2 3 inches and 3 4 inches in size.

There are two main common sizes of gutters and one of them is 5 inch. Most downspouts are rectangular but they can also be round or square. Measure your gutter across the top from the back where the gutter meets the home to the outer edge. K style sizes will typically range from 5 to 6.

If a roof s various drainage areas call for different size gutters go for the biggest one k style. To limit the effects of thermal expansion in gutters 50 ft. 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.

This is most common in the k style gutters. Five inch k style gutters six inch half round. You should have enough gutter downspouts to effectively handle the size of your entire gutter system. 5 inch standard k style gutter shop 5 gutterbrush.

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. The larger a gutter downspout the more water it can drain quickly. 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.

Then use the chart below to see what size gutter you need. Gutters come in different sizes.