Roof Pitch Level

Often you express roof pitch as the ratio between the rise and the run in the form of x 12.

Roof pitch level.

To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. For example if you used a 24 inch level and your measurement was 12 inches the pitch in your roof is 6 in 12. Roof pitch refers to the slope which the rafter creates. 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.

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. Pitches lower than 4 12 have a slight angle and they are defined as low slope roofs. Divide the results by the number of 12 inch segments in your level. The most commonly used roof pitches fall in a range between 4 12 and 9 12.

A a roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch. A roof surface may be either functionally flat or pitched. First measure 12 inches from one end of the level and make a mark. 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.

Pitches above 9 12 are very highly angled and are designated steep slope roofs. In building construction roof pitch is the steepness of a roof quantified as a ratio or as number of angular degrees that one exposure surface deviates from horizontal level.