3 12 Roof Pitch

For example a 3 pitch or 3 in 12 pitch or 3 12 pitch all mean that the roof rises 3 inches for every 12 inches of it s horizontal run.

3 12 roof pitch. 25 12 to 3 12 roof pitches. 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 table below shows common roof pitches and the equivalent grade degrees and radians for each. The fraction 4 4 equals 1 so it doesn t change the value of the pitch and it produces a pitch of 4 12.

Roof pitch refers to the amount of rise a roof has compared to the horizontal measurement of the roof called the run. To express a slope of 1 3 as a roof pitch you would multiply by 4 4 to produce 12 in the denominator of the ratio. The combination of two numbers are used to display or show the roof pitch. So you would need to pick the right option as most regular standing seam metal roofs will require a roof pitch of 2 12 or even 3 12 at a minimum.

Roofers like to express the roof pitch ratio in inches and for simplicity they always use a run of 12 inches. Roof pitches with lower angles such as 1 12 up to 3 12 are found in more urban contemporary style houses and in industrial buildings and shacks. 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. Roof pitch is represented in inches rise of 12 inches run.

The flat roofing materials most appropriate to these shallow sloped roofs include. To see how pitch impacts the look of a garage and changes cost click the design center button on our pole barn kits page. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. Roof pitch what is a 3 12 roof pitch if a roof rises 3 in a length of 12 this is 3 12 roof pitch.