Standard Roof Pitch Angles

Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio.

Standard roof pitch angles.

So use the 12 inch level as a constant run and 18 inch ruler as a variable rise. Roof pitch is a term describing how steep or flat your roof slope is. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. To convert between american roofing ratios and pitch degrees follow these steps.

In degrees 10 2 in 12 or 1 in 6 is considered a minimum. Although there s isn t any standard pitch of a roof used on all kinds of sloped roofs you can determine the range of pitches by using a roof angle calculator and by considering factors like the local climate. The exact roof slope in degrees is given by the arctangent. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.

Locate its tangent or tan and follow the left row for you to read its corresponding degree. Definitions vary on when a roof is considered pitched. Pitch angle incline slope they all can be used to refer to the steepness of a roof. Although there is no single standard roof pitch used on all sloped roofs factors such as roofing materials and local climate help to determine the appropriate range of pitches for a given building.

Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. Whereas for arts and craft house you can exceed up to 51 degrees. What degree angle is a 12 12 pitch roof. Find all the needed factors in order to determine the pitch angle s degree.

A perfectly designed roof incorporates specialized slope over surface that supports a substrate or roof membrane. Thus pitch is typically greater in areas of high rain or snowfall. Roof pitch angle and slope factor charts. The 12 inch run is considered standard in roof pitch or angle terminologies.

A 12 12 pitch roof has a pitch angle of 45. Roof pitch is a measurement of a roof s slope expressed as a ratio. Arctan 3 12 14 0 the primary purpose of pitching a roof is to redirect water and snow. What is the standard pitch of a roof.

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. In the roofing trade the go to term is pitch and it is expressed in terms of 12 inches so the pitch of a roof is determined by how many inches the slope rises for every 12 inches it runs horizontally. The combination of two numbers are used to display or show the roof pitch. Roof pitch is used to describe the slope or angle of the roof.

The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7.