1 4 12 Roof Slope

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.

1 4 12 roof slope.

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. 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.

Most roof s have a pitch in the 4 12 to 9 12 range. 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. A roof that rises 4 inches for every 1 foot or 12 inches of run is said to have a 4 in 12 slope. Drag sliders to animate the results and diagram.

A 4 12 is a roof slope that rises by 4 inches for every 12 inches across. For most home styles roof pitches fall in a range 4 12 a moderate slope up to 8 12 fairly steep. The slope ratio represents a certain amount of vertical rise for every 12 inches of horizontal run. Conventional roofs are the easiest to construct and you can walk on them safely.

They have a pitch ranging from 4 12 to 9 12. Examples of extreme slopes range from 1 4 12 almost flat to 12 12 sloping down at a perfect 45 degree angle. The table below shows common roof pitches and the equivalent grade degrees and radians for each. Generally such roofs have a pitch ranging from 1 2 12 to 2 12.

Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12 4 slope. Roof pitch is a term describing how steep or flat your roof slope is. Low pitched roofs are generally difficult to maintain and you need special materials to prevent leaks. Enter run the flat level length then click pitch angle or rise to select then enter other known dimension angle or pitch.

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. These roofs have a pitch less than 4 12. 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. The combination of two numbers are used to display or show the roof pitch.

Standing seam roof systems must have a minimum roof slope of 1 4 12 2 slope. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof.