Roof Slope Conversion Tables

Inches rise112degrees per 12 inches of run.

Roof slope conversion tables. Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. If you can give them the exact chart and measurement that you like the look of they can work to those specifications. The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72.

Roof pitch on the form x 12 can be expressed in grades as. 18 4o inches per foot. 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. Roof pitch is the slope created by the rafter.

The charts are there to provide people with an idea of what the actual slope will. Example slope as grade. S grade 1 m 2 m 50 slope and roof pitch. Roof pitch degree table.

If this isn t practical then perform the same measurement on the underside of the roof. Using a tape measure make a pencil mark 12 inches from the end of a carpenter s level. To obtain an accurate roof pitch measurement properly measure the rise and run. Image 1 12 to 12 12 roof pitch 7 12 pitch.

Horizontal surface to roof surface1 50 0 125 7 12 2 00 0 167 9 46. Rise vertical distance from11 00 0 083 4 76. 4 3 1 slope. 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. Horizontal to vertical slope ratio to 1 percent slope degrees slope slope ratio. 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. To see what the degree equivalents are for standard rise in run roof pitches see our page quick reference.

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. 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. The combination of two numbers are used to display or show the roof pitch.

Line to roof surface. Run horizontal distance from rise2 50 0 208 11 77. Most roof s have a pitch in the 4 12 to 9 12 range. 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.

Then you ll be able to measure slope from an unfinished attic space under the roof. Roof slope expressed as rise.