# How Do You Determine Roof Slope

### For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.

How do you determine roof slope.

Write the roof slope as the ratio of rise over run or vertical distance over horizontal distance. First measure 12 inches from one end of the level and make a mark. This will allow your project to carry the depth and detail in the roof that you wanted as well as make sure that it will maintain a sturdy and effective nature throughout. Here s an easy safe way to determine the pitch from inside your attic.

A a roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch. To determine the y height measure from the bird s mouth up the calculated slope x in 12 to the top of the rafter. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil.

Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. Outside of the u s a degree angle is typically used. Calculate the roof slope. 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.

Let s assume it is equal to 6 m. Even if you want to use a flat roof pitch calculator system you will be able to find one. Access one of the rafters then take the measurement this way. Measure the rise of your roof.

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. Roof pitch calculator results explained. For example if your tape measure found a 6 inch vertical distance to the 12 inch mark on your level the slope is 6 12 or 6 in 12. Roof slope calculator example of use measure the run length it is the horizontal distance between the roof ridge and the wall of the building.

The most precise way to find the roof s slope is by measuring it from the underside. If you want to know how to find the pitch of a roof then start with a calculator. How roof pitch is calculated to accurately calculate the area of your roof you must first determine its slope or pitch. It is often compared to slope but is not exactly the same.

Pitch is thus the ratio of the rise in inches to a 12 inch run and is often expressed using a semicolon for example 6 12. To determine the finished height of the ridge beam add the rise m and the y height. Locate the level s 12 inch mark.

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