How To Check Roof Pitch

Place the end of your level the 0 inch point of your 12 marking against the roof surface.

How to check roof pitch.

Divide the first part of the ratio by 12 to work out the pitch. The term pitch has two different meanings when it comes to roofs. Hold the level straight and level bubble centered and then measure the vertical distance down from the your 12 mark on the level down to the roof. A 12 12 pitch roof has a pitch angle of 45.

The example to right shows 2 different ways to determine or calculate roof pitch also called roof slope. To convert between american roofing ratios and pitch degrees follow these steps. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. Here s an easy safe way to determine the pitch from inside your attic.

Most people use it to mean the steepness of the roof. Example a the measurements are taken from on top of the roof. Some carpenters consider it more correct to use the term slope for the steepness and use pitch to describe the roof s overall dimensions. Find the inverse tangent of the pitch to find the angle in degrees.

Marvel at your mathematical. This is the amount your roof inclines in a 1 foot span or the pitch of your roof. Check your results with the omni roof pitch calculator. First measure 12 inches from one end of the level and make a mark.