How To Check Roof Pitch

Most people use it to mean the steepness of the roof.

How to check roof pitch. Here s an easy safe way to determine the pitch from inside your attic. To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. A 12 12 pitch roof has a pitch angle of 45. The term pitch has two different meanings when it comes to roofs.

Find the inverse tangent of the pitch to find the angle in degrees. Marvel at your mathematical. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. Simply mark a level at 12 hold it perfectly level and measure from the roof surface to your 12 mark this.

Example a the measurements are taken from on top of the roof. Place the end of your level the 0 inch point of your 12 marking against the roof surface. First measure 12 inches from one end of the level and make a mark. To convert between american roofing ratios and pitch degrees follow these steps.

This is the amount your roof inclines in a 1 foot span or the pitch of your roof. Divide the first part of the ratio by 12 to work out the pitch. The 7 means that the roof rises 7 for every 12 it runs. The example to right shows 2 different ways to determine or calculate roof pitch also called roof slope.