House Roof Pitch Angles

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.

House roof pitch angles. Typical roof pitch is actually the measure of the roof s slope expressed in ratio. Roof pitch is used to describe the slope or angle of the roof. In other words it can be expressed as numerical measure of steepness of the roof. Slope the slope of a roof is represented as x 12 where x is the number of inches in rise for every 12 inches of run this is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares.

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. Roof pitch calculator results explained. However most often a ratio of pitch also fraction is slang used for the more useful slope of rise over run of just one side half the span of a dual pitched roof. The roof pitch calculator is a convenient online tool you can use to quickly assess the pitch of your roof to determine the length of rafters you need.

The combination of two numbers are used to display or show the roof pitch. Roof pitch is expressed as a ratio of the amount of the roof s vertical rise over a corresponding horizontal distance called the run pitch is written assuming a run of a foot or 12 inches so the ratio describes how much the roof rises for every foot of its run. The value displayed as the rise will be your x. For example a roof that rises 6 inches for every 12 inches of horizontal run has a 6 in 12 pitch.

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. Pitch tan angle where angle is the roof pitch expressed in degrees. After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. This is the slope of geometry stairways and other construction disciplines or the trigonometric arctangent function of its decimal.

The angle or pitch of a roof is calculated by the number of inches it rises vertically for every 12 inches it extends horizontally. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. Roof pitch is a term describing how steep or flat your roof slope is. If you want to find the roof pitch in the form of x 12 simply calculate the pitch and substitute 12 for the run length.

Some well defined standards are followed while deciding about roof pitch but in actuality the slope depends upon the type of roofing material and climatic conditions of the area. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof.