How Measure Gutter Size

Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.

How measure gutter size.

Measure the height of. Find the width of the gutters. Use your tape measure to determine the length of the twine marking down this calculation. 6 inch 7 960 square feet.

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. Measuring existing gutters 1. How to measure downspouts.

How do you calculate gutter size. 5 inch 5 520 square feet. Place a sturdy 20 ft 6 1 m ladder on 1 side of your house so that you can reach. Measure the length of each gutter run.

Then use the chart below to see what size gutter you need. Run the tape measure from 1 corner of the gutter as far as you can go toward. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted. Measure length of twine mark the measurement with a piece of tape and then pull the twine off of the other end of the gutter.

If a roof s various drainage areas call for different size gutters go for the biggest one k style.