How Do I Get The Pitch Of A Roof

But again we are jumping ahead of ourselves.

How do i get the pitch of a roof. To do this simply convert the rise and run as a fraction to a decimal form eg. How to convert roof pitch to degrees. A 12 12 pitch roof has a pitch angle of 45. First convert the pitch to a slope.

To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. Check your results with the omni roof pitch calculator. What is a roof pitch. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level.

The slope is the same as the pitch. To find the angle of a roof in degrees convert the pitch to a slope then convert to degrees by finding the arc tangent of the slope. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Carpenters use special conversion charts to estimate the roofing material required based on the slope and shape.

Rise run rise run slope. Marvel at your mathematical. First measure 12 inches from one end of the level and make a mark. Divide the slope by two to get the pitch.

Divide the first part of the ratio by 12 to work out the pitch. For a roof with the ridge above one wall the span is the same as the run. Here s an easy safe way to determine the pitch from inside your attic. Find the inverse tangent of the pitch to find the angle in degrees.

Before we get started with all that we need to find out the pitch of a roof. For more complex roofs you may need to calculate it section by section.