1 In 12 Roof Pitch

If this isn t practical then perform the same measurement on the underside of the roof.

1 in 12 roof pitch.

In degrees 10 2 in 12 or 1 in 6 is considered a minimum. Resilient asphalt shingles lie much flatter to the substrate than slate tile and concrete which keeps water from being easily blown under them. 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. 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 or slope is a measure of vertical rise to horizontal run expressed in inches per foot. Roof pitch is used to describe the slope or angle of the roof. Think of a classic addams family haunted house with its soaring peaks and you have a. A 12 to 24 pitch is expressed as 1 2.

The pitch fraction represents a certain amount of vertical rise over the entire span. You can go by the measurements taken by walking the roof. This pitch might be as low as 1 12. Visually this roof appears flat.

The exact roof slope in degrees is given by the arctangent. Since this is a flat roof or nearly flat roof. Thus pitch is typically greater in areas of high rain or snowfall. The pitch can be expressed numerically as a fraction.

0 pitch 1 00x the roof area. 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. This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees. We included a roof pitch chart below the 7 12 example image and the calculator below that.

Definitions vary on when a roof is considered pitched. It was fashionable for modern style homes built in the 1960s to have little pitch just a barely negligible slope to help drain water. Roof pitch degree table. Roofs on victorian era houses were often sharply angled with a steep pitch.

The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. If a roof rises 1 in a length of 12 this is 1 12 roof pitch. Arctan 3 12 14 0 the primary purpose of pitching a roof is to redirect water and snow. A roof with a 6 rise for every 12 run has a 6.