1 In 12 Roof Pitch

Definitions vary on when a roof is considered pitched.

1 in 12 roof pitch.

Arctan 3 12 14 0 the primary purpose of pitching a roof is to redirect water and snow. Visually this roof appears flat. Resilient asphalt shingles lie much flatter to the substrate than slate tile and concrete which keeps water from being easily blown under them. If this isn t practical then perform the same measurement on the underside of the roof.

In degrees 10 2 in 12 or 1 in 6 is considered a minimum. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. 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. We included a roof pitch chart below the 7 12 example image and the calculator below that.

The pitch can be expressed numerically as a fraction. It was fashionable for modern style homes built in the 1960s to have little pitch just a barely negligible slope to help drain water. Thus pitch is typically greater in areas of high rain or snowfall. For example given a roof with a rise of 4 feet and a span of 24 feet the pitch is 1 to 6 pitch which can be expressed as the fraction of 1 6.

0 pitch 1 00x the roof area. Since this is a flat roof or nearly flat roof. 1 12 roof pitch angle 4 76 degrees. If a roof rises 1 in a length of 12 this is 1 12 roof pitch.

The pitch fraction represents a certain amount of vertical rise over the entire span. Roof pitch degree table. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. The exact roof slope in degrees is given by the arctangent.

Think of a classic addams family haunted house with its soaring peaks and you have a. You can go by the measurements taken by walking the roof. A 12 to 24 pitch is expressed as 1 2. 1 pitch 1 01 2 pitch 1 02 3 pitch 1 03 4 pitch 1 05 5 pitch 1 085 6 pitch 1 12 7 pitch 1 16 8 pitch 1 21 9 pitch 1 25 10 pitch 1 31 11 pitch 1 36 12 pitch 1 42.

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. Roofs on victorian era houses were often sharply angled with a steep pitch. Image 1 12 to 12 12 roof pitch 7 12 pitch. Roof pitch is used to describe the slope or angle of the roof.