Roof Slope Conversion Tables

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.

Roof slope conversion tables.

Using a tape measure make a pencil mark 12 inches from the end of a carpenter s level. Roof slope expressed as rise. On blue prints architects engineers usually display the pitch of a roof in the format shown on the image where number 4 represents a rise and number 12 represents a length. Inches rise112degrees per 12 inches of run.

Roof pitch on the form x 12 can be expressed in grades as. Horizontal to vertical slope ratio to 1 percent slope degrees slope slope ratio. Slope as grade for an elevation of 1 m over a distance of 2 m can be calculated as. 3 1 or 3 to 1 percent slope.

18 4o inches per foot. To see what the degree equivalents are for standard rise in run roof pitches see our page quick reference. If you can give them the exact chart and measurement that you like the look of they can work to those specifications. Roof pitch is the slope created by the rafter.

To obtain an accurate roof pitch measurement properly measure the rise and run. Roof pitch degree table. Most roof s have a pitch in the 4 12 to 9 12 range. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof.

The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. 4 3 1 slope. Rise vertical distance from11 00 0 083 4 76. Horizontal surface to roof surface1 50 0 125 7 12 2 00 0 167 9 46.

Image 1 12 to 12 12 roof pitch 7 12 pitch. The charts are there to provide people with an idea of what the actual slope will. The combination of two numbers are used to display or show the roof pitch. We included a roof pitch chart below the 7 12 example image and the calculator below that.

Run horizontal distance from rise2 50 0 208 11 77. The table below shows common roof pitches and the equivalent grade degrees and radians for each. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. Other than the 45 roof slope which is 12 in 12 none of the standard roof pitches 5 in 12 6 in 12 etc are equal to a whole degree.

Line to roof surface. Roof pitch conversion charts are very useful for one thing they give you all the information that you need to provide to the professionals. You can find the roof pitch in the form of x 12 like 4 12 or 9 12. Example slope as grade.

Last updated july 10 2020. Then you ll be able to measure slope from an unfinished attic space under the roof.