How To Check Roof Pitch

Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level.

How to check roof pitch.

Simply mark a level at 12 hold it perfectly level and measure from the roof surface to your 12 mark this. Find the inverse tangent of the pitch to find the angle in degrees. To convert between american roofing ratios and pitch degrees follow these steps. 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. 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. Example a the measurements are taken from on top of the roof.

Most people use it to mean the steepness of the roof. To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. Marvel at your mathematical. Here s an easy safe way to determine the pitch from inside your attic.

The 7 means that the roof rises 7 for every 12 it runs. First measure 12 inches from one end of the level and make a mark. Place the end of your level the 0 inch point of your 12 marking against the roof surface. Check your results with the omni roof pitch calculator.