# 1 4 12 Roof Slope

### 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.

1 4 12 roof slope.

The combination of two numbers are used to display or show the roof pitch. These roofs have a pitch less than 4 12. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. The slope ratio represents a certain amount of vertical rise for every 12 inches of horizontal run.

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. For example if you measure 4 inches the pitch of your roof is 4 12. The triangle diagram will be re drawn to scale with all dimensions marked. Pitch angle precision color.

This forms an angle of 18 5 between the horizontal section and the roof and creates a gentle incline that is seen as a midpoint between a low pitch and medium pitch roof. Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12 4 slope. Enter run the flat level length then click pitch angle or rise to select then enter other known dimension angle or pitch. 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.

Standing seam roof systems must have a minimum roof slope of 1 4 12 2 slope. Most roof s have a pitch in the 4 12 to 9 12 range. For most home styles roof pitches fall in a range 4 12 a moderate slope up to 8 12 fairly steep. The table below shows common roof pitches and the equivalent grade degrees and radians for each.

They have a pitch ranging from 4 12 to 9 12. Low pitched roofs are generally difficult to maintain and you need special materials to prevent leaks. Drag sliders to animate the results and diagram. Generally such roofs have a pitch ranging from 1 2 12 to 2 12.

Examples of extreme slopes range from 1 4 12 almost flat to 12 12 sloping down at a perfect 45 degree angle. A 4 12 is a roof slope that rises by 4 inches for every 12 inches across. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. This means for every 12 horizontal units the roof must rise a minimum of one half vertical unit.

Roof pitch is a term describing how steep or flat your roof slope is. Simply locate a roof rafter board place the end of the level against the bottom edge and measure from the 12 inch mark vertically to the bottom edge of the rafter.

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