How Do I Figure Out The Pitch Of My Roof

Pitch is the incline of the roof represented as the ratio of rise to the span twice the run.

How do i figure out the pitch of my roof. First measure 12 inches from one end of the level and make a mark. Roof pitch is simply the slopecreated by the rafter. If you do need to calculate the pitch an estimate or shortcut is usually more practical than measuring the roof s overall dimensions. Here are a couple examples.

For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally. 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. Divide the slope by two to get the pitch.

In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. Roof pitch refers to the slope which the rafter creates. It can be assessed in two ways either as the angle the rafter makes with the horizontal or the proportion between the rise and the run of the roof. To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil.

Roof pitch is often expressed as a ratio between rise and run in the form of x 12. It is often compared to slope but is not exactly the same. You can assess this in two ways either as the roof pitch angles which the rafters make with the horizontal or the proportion between the run and the rise of the roof.