Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.
Gutter shapes and sizes.
Let s start with shapes.
If you d like to do your own calculations for sizing your gutters we ll help you through it.
This is most common in the k style gutters.
Gutter downspout sizes are 3 to 6 inches.
If a roof s various drainage areas call for different size gutters go for the biggest one k style.
Then use the chart below to see what size gutter you need.
Most downspouts are rectangular but they can also be round or square.
You should have enough gutter downspouts to effectively handle the size of your entire gutter system.
There are two main common sizes of gutters and one of them is 5 inch.
Basic types of gutters.
However too large a gutter downspout can look unattractive.
We re here to guide you on the path to gutter glory.
The larger a gutter downspout the more water it can drain quickly.
6 inch 7 960 square feet.
Both types come in 5 and 6 inch widths.