1 2 12 Roof Pitch

This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees.

1 2 12 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. Image 1 12 to 12 12 roof pitch 7 12 pitch. In fact a properly installed metal roof can be used on roofs as shallow as 1 2 inch 12 inches which is almost flat. What is the standard pitch for a roof.

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. Most roof s have a pitch in the 4 12 to 9 12 range. Divide the rise by the run the run is 12. We included a roof pitch chart below the 7 12 example image and the calculator below that.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. Contemporary houses often have flat roofs which shouldn. 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. If this isn t practical then perform the same measurement on the underside of the roof.