3 12 Roof Pitch

Roof pitch is represented in inches rise of 12 inches run.

3 12 roof pitch. 3 12 roof pitch angle 14 04 degrees. Two most common methods 4 12 or 4 12 are used for marking the pitch of a 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. Roof pitch refers to the amount of rise a roof has compared to the horizontal measurement of the roof called the run.

A pvc roof is a lot more durable and longer lasting that a conventional epdm rubber roofing system. 25 12 to 3 12 roof pitches. The flat roofing materials most appropriate to these shallow sloped roofs include. 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.

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. 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. 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. The table below shows common roof pitches and the equivalent grade degrees and radians for each.

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. 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. The fraction 4 4 equals 1 so it doesn t change the value of the pitch and it produces a pitch of 4 12.