Determining Gutter Size

Find the rainfall intensity for your locale.

Determining gutter size.

Multiply length peak to. Rainfall intensity is measured in a 5 minute interval translated. Get 7 or 8 inch gutters. How do you calculate gutter size.

Measure your gutter across the top from the back where the gutter meets the home to the outer edge. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted. Measure the length of each gutter run. 5 inch standard k style gutter shop 5 gutterbrush.

Adjusting for pitch and rainfall. Increasing the pitch increases a gutter s. Run the tape measure from 1 corner of the gutter as far as you can go toward. They ll cost more and probably require a custom order through a professional installer.

The standard is about inch per 10 feet. Place a sturdy 20 ft 6 1 m ladder on 1 side of your house so that you can reach. Find the width of the gutters. Measure the height of.

The steeper a roof s pitch the more windblown rain it can collect. Measuring existing gutters 1. How to calculate gutter and downspout capacity step 1. See photos below most residential gutters will measure approximately 5 inches across the top with the actual opening being approximately 4 5 inches.

Increase the pitch of the gutter.