How Measure Gutter Size

Calculating the drainage area of a roof.

How measure gutter size.

Place a sturdy 20 ft 6 1 m ladder on 1. 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. See photos below most residential gutters will measure approximately 5 inches across the top with the actual opening being approximately 4 5 inches.

Hold an extended tape measure at the end of the level that is not touching the surface of the roof. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. 5 inch 5 520 square feet. 5 10 pack kit 40.

Move the tape measure so its blade is sitting plumb against the end of the level. Gutter size is determined by measuring across the top of the gutter to help you understand gutter measurement and dimensions here is a relative comparison in size between 2 3 inch downspouts vs. Download our free gutter guide for more helpful information. How to measure downspouts.

Then use the chart below to see what size gutter you need. If your gutter is 5 inches wide or less you ll need our 5 inch kit. 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. How to measure gutters method 1 of 3.

Use your tape measure to determine the length of the twine marking down this calculation. You can also work with a professional who knows the climate in your area and who understands what size of gutter you need to work with the roof that you have. K style sizes will typically range from 5 to 6. Place a sturdy 20 ft 6 1 m ladder against the roof and climb.

The steeper a roof s pitch the more windblown rain it can collect. 12 inches or more. If a roof s various drainage areas call for different size gutters go for the biggest one k style. Multiply drainage area by 1 3.

Which size of gutter guard by gutterglove do you need. 3 4 inch downspouts likewise a comparison between 3 inch round downspout and 4 inch round downspout. Find the width of the gutters. Measure your gutter across the top from the back where the gutter meets the home to the outer edge.

5 inch standard k style gutter shop 5 gutterbrush. How do you calculate gutter size.