How Big Of Gutter Do I Need

Measure your gutter across the top from the back where the gutter meets the home to the outer edge.

How big of gutter do i need.

Roof pitch factor the steeper a roof s pitch the more windblown rain it can collect. Once you know the total square footage of drainage for each gutter you ll need to adjust for the following two factors. Gutters come in different sizes. Consider your drainage area.

5 inch standard k style gutter shop 5 gutterbrush. What size gutters do you need. You can measure pitch with a. Calculate your roof.

How do you do the math to figure out how large your gutters should be. You ll also need to. Downspouts also come in. 5 gutters and 6 gutters can both be used together for different areas.

Gutters come in different sizes. Most homes can be satisfied with 5 gutters. They can be 4 5 or 6 inches. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted.

Houses with larger roofs may require 6 gutters because they flow more water. A square inch of downspout can drain 1 200 square feet of roof during a rain with an intensity of one inch per hour. The steeper a roof s pitch the more windblown rain it can collect. See photos below most residential gutters will measure approximately 5 inches across the top with the actual opening being approximately 4 5 inches.

Roof area the locale s rainfall intensity and gutter capacity determine how many square inches of downspout are needed.