However too large a gutter downspout can look unattractive.
Gutter shapes and sizes.
You should have enough gutter downspouts to effectively handle the size of your entire gutter system.
Let s start with shapes.
Gutter downspout sizes are 3 to 6 inches.
6 inch 7 960 square feet.
Basic types of gutters.
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.
We re here to guide you on the path to gutter glory.
If a roof s various drainage areas call for different size gutters go for the biggest one k style.
This is most common in the k style gutters.
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.
5 inch 5 520 square feet.
Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.
Both types come in 5 and 6 inch widths.
Then use the chart below to see what size gutter you need.