2 1 2 In 12 Roof Pitch

Roof pitch defined and explained.

2 1 2 in 12 roof pitch.

1 12 roof pitch angle 4 76 degrees. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12. Resilient asphalt shingles lie much flatter to the substrate than slate tile and concrete which keeps water from being easily blown under them. Image 1 12 to 12 12 roof pitch 7 12 pitch.

The combination of two numbers are used to display or show the roof pitch. If this isn t practical then perform the same measurement on the underside of the roof. A roof pitch multiplier also known as a roof pitch factor is a number that when multiplied by the area covered by a sloped roof gives the actual area of the roof. Roof pitch designations are comprised of two numbers indicating a ratio.

At slopes below 2 12 a granule surfaced asphalt membrane can be installed and many are available in colors to complement the shingle colors. Pitch is the term used to describe the angle slope or slant of your roof. The table below shows common roof pitches and the equivalent grade degrees and radians for each. 8 12 roof pitch 33 angle 33 69 degrees details 9 12 roof pitch 37 angle 36 37 degrees details.

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. 7 12 roof pitch 30 angle 30 26 degrees details. For reference 2 12 equates to about 9 5º and 4 12 to about 18 5º. A pitch of 2 12 is the minimum pitch for shingles made of asphalt so your roof just barely makes the cut off for one of the most popular roofing material options.

Most roof s have a pitch in the 4 12 to 9 12 range. 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 degree table. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof.

Some roof specifications may express slope in the typical geometric terms of degrees. Or the colon can replace the slash as in 2 12 or 7 12.