1 2 Inch Slope Roof

A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance.

1 2 inch slope roof.

Most roof s have a pitch in the 4 12 to 9 12 range. Slope conversion tables 1 4 1 2 3 4 1 1 1 4 1 1 2 1 3 4 2 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 0 25 0 50 0 75 1 00 1 25 1 50 1 75 2 00 2 25 3 4 5 6 7 8 9 10. The slope ratio represents a certain amount of vertical rise for every 12 inches of horizontal run. 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.

These roofs have a pitch less than 4 12. Flat roofs are not perfectly flat in reality they need a small slope for water runoff. Generally these roofs have a pitch from 1 2 12 to 2 12 from 4 2 to 16 7. If the rise is 6 inches for every 12 inches of run then the roof slope is 6 in 12 the slope can be expressed numerically as a ratio.

We can divide roofs into the following categories. Roof slopes are most commonly defined by the rise over run ratio. That means the roof doesn t shed water as easily as steeper roofs which is why choosing the right type of roofing material is so important. Roof slopes slope rise run in inches conventional slope 4 in 12 and up.

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. Flat 0 in 12 to 2 in 12. The triangle diagram will be re drawn to scale with all dimensions marked. If a roof slope rises say 4 inches when measured 12 inches along the bottom of a horizontal roof truss.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. Enter run the flat level length then click pitch angle or rise to select then enter other known dimension angle or pitch. For example a pitch 1 12 means that per every twelve yards of building length the rise will be equal to one yard. Generally such roofs have a pitch ranging from 1 2 12 to 2 12.

Low slope 2 in 12 to 4 in 12. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Drag sliders to animate the results and diagram. What exactly is roof slope.

Simply put it s a shallow roof. Low pitched roofs are generally difficult to maintain and you need special materials to prevent leaks. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.