Two Side Slope Roof

A ratio is the most common way of expressing roof pitch or roof slope but degrees are also possible.

Two side slope roof.

A roof slope of 7 12 is also good and can provide the additional benefit of helping minimize the effects of wind driven rain. The result of joining two or more gabled roof sections together forming a t or l shape for the simplest forms or any number of more complex shapes. A mansard roof also known as a french. In other words if a roof has a span of 4 meters and a rise of 2 meters the pitch would be 1 2 or one half of the pitch.

See low slope roofing. Low slope roofs are from 0 to 3 12 in pitch. Slopes greater than 18 12 are found on a frame roofs and some mansard style. Since it is half the span the angle of the roof would be 45 degrees.

Also known as pitched or peaked roof gable roofs are some of the most popular roofs in the us. The sides are all equal length and come together at the top to. So if your roof rises 4 inches for every 12 inches of horizontal length then the pitch of your roof is expressed as 4 12. Some sources consider low slope to include 3 12 pitch roofs.

Take the measurement of the vertical. The way pitch also known as roof slope is measured is rise over run. A hip roof has slopes on all four sides. Take a measurement of 12 inches using a level.

However from the wind uplift mitigation perspective a 7 12 roof slope can be considered as a two story building due to the higher overall steepness and profile of the roof. But most important is the roof pitch the angle or slope of the roof which can be expressed in fraction ratio or degrees and divides the rise by the span. Position your level against the roof until the bubble of the vial sits between two lines. If asphalt shingles are to be installed on a low slope roof special steps are required to avoid short roof life and roof leaks.

Roof pitch is the measurement of roof steepness. See also roof pitch crow stepped corbie stepped stepped gable.