Typical Roof Pitch Angles

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.

Typical roof pitch angles.

The high steeply pitched gabled roofs of northern europe are typical in regions of heavy snowfall. This table lists all of the common roof slopes expressed as rise run roof angle roof slope slope grade and walk ability. Roof pitch is a term describing how steep or flat your roof slope is. In other words it can be expressed as numerical measure of steepness of the roof.

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. Two most common methods 4 12 or 4 12 are used for marking the pitch of a 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. Citation needed carpenters frame rafters on an angle to pitch a roof.

Roof pitch angle and slope factor charts. 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. 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. To convert between american roofing ratios and pitch degrees follow these steps.

Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio. Find the inverse tangent of the pitch to find the angle in degrees. A 12 12 pitch roof has a pitch angle of 45. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot.

The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. Typical roof pitch is actually the measure of the roof s slope expressed in ratio. Divide the first part of the ratio by 12 to work out the pitch. 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. What degree angle is a 12 12 pitch roof. 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 and roofing materials. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.