28 Degree Roof Pitch

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.

28 degree roof pitch. 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. 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. To convert between american roofing ratios and pitch degrees follow these steps. The roof pitch calculator is a convenient online tool you can use to quickly assess the pitch of your roof to determine the length of rafters you need.

A 12 12 pitch roof has a pitch angle of 45. A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind. Find the inverse tangent of the pitch to find the angle in degrees. 4 responses to 28 minimum roof pitch with.

Mechanically seamed standing seam metal roofs commonly used on large warehouses and the like can be used on much lower roof pitches. The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. Divide the first part of the ratio by 12 to work out the pitch. Some homes may benefit most from two types of metal roofing on different roof planes to accommodate different pitches on the roof.

But with the use of a roof pitch in degrees converter you will be able to get the correct measurement. With the use of this converter it will be easier for you to locate a 30 degree roof pitch 20 degree roof pitch 25 degree roof pitch or a 15 degree roof pitch. 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. After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually.

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. The following table provides the roof pitch multiplier for roofs of various slopes. Lower slopes don t handle wind driven rain as well. What degree angle is a 12 12 pitch roof.

The 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily. The table below shows common roof pitches and the equivalent grade degrees and radians for each. 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.