Roof Angle Tables

In essence a roof pitch chart is provided as a rough guide usually by a roofing company to help you see what the average roof pitches tend to be.

Roof angle tables. Roof pitch angle and slope factor charts. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. Includes result for hip valley factor slope factor and the roof slope in degrees. The table below describes different roof slopes giving roor slope in rise run in inches and re expressing the same slopes as angle grade walk ability and roof type or class.

The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. Calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. Angle the angle of a roof is the same as the roof s slope except instead of being.

Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio. To convert between american roofing ratios and pitch degrees follow these steps. A 12 12 pitch roof has a pitch angle of 45. 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.

Enter any pitch or fraction of pitch to find angle. Divide the first part of the ratio by 12 to work out the pitch. 45 this is our pitch calculator which will convert pitch to angle or angle to pitch for half degree roof slope calculations. Roof pitch is a term describing how steep or flat your roof slope is.

Roof pitch degree table. Roof pitch calculator results explained. What degree angle is a 12 12 pitch roof. For a more detailed explanation of the roof pitch multiplier see how to find the area of a sloped roof if you know the roof pitch in degrees find the secant of the slope using a scientific calculator for example if the roof pitch is 45 then sec 45 1 414213.

Enter any angle or fraction of angle to find pitch. The combination of two numbers are used to display or show the roof pitch. Usually they come in the form of a roof pitch diagram chart but other times it will be presented to you in a conversion format. 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.

If you add an eaves overhang dimension then the amount the rafter sticks passed the wall will be added to the rafter length. Find the inverse tangent of the pitch to find the angle in degrees.