15 Degree Roof Pitch Options

To convert between american roofing ratios and pitch degrees follow these steps.

15 degree roof pitch options. The 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily. 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. Divide the first part of the ratio by 12 to work out the pitch. Find the inverse tangent of the pitch to find the angle in degrees.

Lower slopes don t handle wind driven rain as well. This means that the rise of the slope goes up or down 8 inches for every 12 inches. 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. The slope of a roof or pitch is determined by how many inches the roof rises over 1 foot or 12 inches.

The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. The table below shows common roof pitches and the equivalent grade degrees and radians for each. Steeper slopes increase the sail effect that makes them susceptible to wind. A 12 12 pitch roof has a pitch angle of 45.

What degree angle is a 12 12 pitch roof. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Browse our range of low pitched roof tiles and slates that can be used at a maximum pitch of 15 degrees. 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.

To put it in perspective the angle of this slope would be around 30 degrees. A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind. 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. An example for a steep sloped roof is 8 12.

All of our products are offered competitive prices. 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. Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio.