High Slope Roof

Visually this roof appears flat.

High slope roof.

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Here are the equations you may use to solve for the length of the slope and the rafter. The exact roof slope in degrees is given by the arctangent. 9 12 20 12 steep slope.

The slope of a roof has an effect on the interior volume of a building the drainage the style and the material used. Arctan 3 12 14 0 the primary purpose of pitching a roof is to redirect water and snow. Use the following formula which also describes a right triangle. You can also calculate roof pitch even without using a roof slope calculator.

Thus pitch is typically greater in areas of high rain or snowfall. Think of a classic addams family haunted house with its soaring peaks and you have a. This pitch might be as low as 1 12. 2 12 4 12 conventional slope roof.

The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7. The minimum roof pitch for shedding snow is around 30 or a 6 12 or 7 12 slope although this is not a definite as the material of your roof the direction of the snow and wind are some factors that can affect whether or not snow will slide as roofs of as little as 10 have been reported to shed snow. High pitched roofs often need extra fasteners and their pitch can be as high as 21 12. It was fashionable for modern style homes built in the 1960s to have little pitch just a barely negligible slope to help drain water.