1 2 12 Roof Pitch

Divide the rise by the run the run is 12.

1 2 12 roof pitch.

There is no standard universal roof pitch roof pitch varies depending on culture climate style and available materials in the usa the range of standard pitches is anywhere between 4 12 and 9 12 in the uk the typical house has a pitch between 40 50 although 45 should be avoided. If this isn t practical then perform the same measurement on the underside of the roof. Contemporary houses often have flat roofs which shouldn. Long lasting and old fashioned metal roofing is an excellent design choice if most of your house has steeper roof planes that are covered in traditional slate or tile.

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. Image 1 12 to 12 12 roof pitch 7 12 pitch. A roof pitch multiplier also called a roof pitch factor is a number that is multiplied by the area covered by a sloped roof to produce the area of the actual surface of the roof for roof slopes expressed as x in 12 rise in run the roof pitch multiplier is determined by finding the square root of rise run 1. 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.

In fact a properly installed metal roof can be used on roofs as shallow as 1 2 inch 12 inches which is almost flat. This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees. The table below shows common roof pitches and the equivalent grade degrees and radians for each. What is the standard pitch for a roof.