##### Asked by: Keith Bumgartner

asked in category: General Last Updated: 7th March, 2020# What is a 4/12 roof slope?

**4/12 roof pitch**indicates the

**roof**rises 4 inches in height for every 12 inches, as measured horizontally from the edge of the

**roof**to the centerline. The gentle

**slope**of a

**4/12 pitch roof**falls on the cusp between low-

**pitch**and moderate-

**pitch**.

Also, what is a typical roof slope?

The most commonly used **roof** pitches fall in a range between 4/12 and 9/12. Pitches lower than 4/12 have a slight angle, and they are defined as low-**slope roofs**. Pitches above 9/12 are very highly angled and are designated steep-**slope roofs**.

Furthermore, how do you determine the slope of a roof? The angle, or **pitch**, of a **roof** is **calculated** by the number of inches it rises vertically for every 12 inches it extends horizontally. For example, a **roof** that rises 6 inches for every 12 inches of horizontal run has a 6-in-12 **pitch**.

Accordingly, how do you measure a 4/12 pitch roof?

The slope of your **roof** is the ratio of vertical distance (rise) to horizontal distance (run). Just write down the measurements you found. There's no need to simplify them. For example, if you **find 4** inches of height with the tape **measure** at the **12** inch mark on the level, your slope is **4**:**12** or "**4** in **12**."

What roof pitch is 45 degrees?

A 12/12 **pitch roof** has a **pitch** angle of **45**°.