15 Degree Roof Pitch

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.

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. This means that the rise of the slope goes up or down 8 inches for every 12 inches. A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind. But with the use of a roof pitch in degrees converter you will be able to get the correct measurement.

It is uncommon to find a roof below 15 but for those very low pitch applications there are interlocking clay pantiles available suitable for use down to 12 5. To put it in perspective the angle of this slope would be around 30 degrees. To convert between american roofing ratios and pitch degrees follow these steps. 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.

After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. An example for a steep sloped roof is 8 12. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. 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 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily. Lower slopes don t handle wind driven rain as well. Find the inverse tangent of the pitch to find the angle in degrees. Divide the first part of the ratio by 12 to work out the pitch.

Steeper slopes increase the sail effect that makes them susceptible to wind. What degree angle is a 12 12 pitch roof. 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 table below shows common roof pitches and the equivalent grade degrees and radians for each.

A 12 12 pitch roof has a pitch angle of 45. Traditionally a minimum roof pitch of 20 was recommended in bs 5534 but modern tiles and slates have now been designed for applications as low as 15. The slope of a roof or pitch is determined by how many inches the roof rises over 1 foot or 12 inches.