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.
Extra size gutters.
One foot of 5 k style gutters holds 1 2 gallons of water.
Large rain gutters work better than the standard 5 inch size when you have upper gutters draining into lower gutters and other complicated layouts that cause an increased volume of water.
You have three options.
Large rain gutters can also be useful when because the size of the roof or the construction of the house you need a more complicated gutter system.
There are many times where the problem is not connected to the size of the gutter.
Therefore this roof should be equipped with 6 inch k style gutters.
If a roof s various drainage areas call for different size gutters go for the biggest one k style.
5 inch 5 520 square feet.
Get 7 or 8 inch gutters.
One foot of 6 k style gutters holds 2 0 gallons of water.
For example climates that receive large amounts of rain and or heavy rainfall have a roof style that requires a wide gutter system to collect rain water and homes that have varying gutter.
What if the runoff is off the chart for standard gutters.
Then use the information below to see what size gutter you need.
In these cases 7 inch or 8 inch gutters can be offered.
Gutters of this size are not often available seamless and would normally be installed in 10 foot sections.
While 6 inch is becoming the new standard gutter size in some situations it is not big enough.