1 2 Inch Slope Roof

Low slope 2 in 12 to 4 in 12.

1 2 inch slope roof.

We can divide roofs into the following categories. 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. Flat 0 in 12 to 2 in 12. Generally such roofs have a pitch ranging from 1 2 12 to 2 12.

Low pitched roofs are generally difficult to maintain and you need special materials to prevent leaks. Roof slopes are most commonly defined by the rise over run ratio. If a roof slope rises say 4 inches when measured 12 inches along the bottom of a horizontal roof truss. 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. Flat roofs are not perfectly flat in reality they need a small slope for water runoff. 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. Flat roofs which aren t perfectly flat require a small slope to allow for water runoff.

Drag sliders to animate the results and diagram. 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. A roof that rises 4 inches for every 1 foot or 12 inches of run is said to have a 4 in 12 slope. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.

For example a pitch 1 12 means that per every twelve yards of building length the rise will be equal to one yard. The table below shows common roof pitches and the equivalent grade degrees and radians for each. These roofs have a pitch less than 4 12. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that.

Simply put it s a shallow roof. 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. What exactly is roof slope. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.

Roof slopes slope rise run in inches conventional slope 4 in 12 and up. A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance. Most roof s have a pitch in the 4 12 to 9 12 range.