Typical Roof Pitch Angles

This table lists all of the common roof slopes expressed as rise run roof angle roof slope slope grade and walk ability.

Typical roof pitch angles.

In other words it can be expressed as numerical measure of steepness of the roof. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Citation needed carpenters frame rafters on an angle to pitch a roof. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot.

Typical roof pitch is actually the measure of the roof s slope expressed in ratio. 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. Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio. A 12 12 pitch roof has a pitch angle of 45.

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. What degree angle is a 12 12 pitch 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.

This article series gives clear examples just about every possible way to figure out any or all roof dimensions and measurements expressing the roof area width length slope rise run and unit rise in inches per foot. The combination of two numbers are used to display or show the roof pitch. Buffalo new york and montreal quebec canada specify 6 in 12 a pitch of approximately 26 6 degrees. Divide the first part of the ratio by 12 to work out the pitch.

Roof pitch angle and slope factor charts. Roof pitch is a term describing how steep or flat your roof slope is. Pitch angle incline slope they all can be used to refer to the steepness of a roof. In some areas building codes require a minimum slope.

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. Roof pitch is used to describe the slope or angle of the roof. Find the inverse tangent of the pitch to find the angle in degrees. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof.