Increasing the pitch increases a gutter s handling capacity but the gutter may look askew over a long run.
Standard house gutter size.
This is most common in the k style gutters.
The standard is about inch per 10 feet.
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.
Then use the chart below to see what size gutter you need.
Vinyl gutter is lightweight the amerimax 10 ft.
5 inch 5 520 square feet.
Gutters come in different sizes.
See photos below most residential gutters will measure approximately 5 inches across the top with the actual opening being approximately 4 5 inches.
Find a professional installer who can calculate exactly what size and how much gutter you will need in your region here.
You can also add additional or oversized downspouts to improve drainage if necessary.
Measure your gutter across the top from the back where the gutter meets the home to the outer edge.
The most common gutter sizes are 5 inches and 6 inches although 4 inches is available as well.
Be sure to select a contractor that only uses heavy 032 gauge aluminum because they are stronger and will hold up much longer.
5 inch standard k style gutter shop 5 gutterbrush.
The amerimax 10 ft.
Downspouts also come in different sizes such as 2 3 inches and 3 4 inches in size.
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.
As with gutters a downspout s capacity must match or exceed the expected runoff.
K style sizes will typically range from 5 to 6.
There are 2 common sizes for gutter material thickness standard 027 gauge and heavy duty 032 gauge.
The high capacity gutter channels and redirects rainwater to help prevent garden erosion and foundation damage.
Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.
Downspouts are commonly 2 x 3 inches and 3 x 4 inches in size or 3 or 4 inches in diameter.
Vinyl gutter is lightweight and easy to install.
A standard 5 inch k style gutter can handle annual rainfall for a majority of houses in most of the u s.
7 and greater are appropriate for churches and larger commercial buildings.
If a roof s various drainage areas call for different size gutters go for the biggest one k style.
Standard 2 x3 downspouts can be used with the 5 gutters.
They can be 4 5 or 6 inches.