1 4 12 Roof Slope

Examples of extreme slopes range from 1 4 12 almost flat to 12 12 sloping down at a perfect 45 degree angle.

1 4 12 roof slope.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. 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. Drag sliders to animate the results and diagram.

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 means for every 12 horizontal units the roof must rise a minimum of one half vertical unit. 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. For most home styles roof pitches fall in a range 4 12 a moderate slope up to 8 12 fairly steep.

A 4 12 is a roof slope that rises by 4 inches for every 12 inches across. For example if you measure 4 inches the pitch of your roof is 4 12. Conventional roofs are the easiest to construct and you can walk on them safely. 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.

Enter run the flat level length then click pitch angle or rise to select then enter other known dimension angle or pitch. Roof pitch is a term describing how steep or flat your roof slope is. 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. Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12 4 slope.

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. 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. They have a pitch ranging from 4 12 to 9 12. This will give you the rise over run or pitch.

Standing seam roof systems must have a minimum roof slope of 1 4 12 2 slope. These roofs have a pitch less than 4 12. The slope ratio represents a certain amount of vertical rise for every 12 inches of horizontal run. Pitch angle precision color.

Generally such roofs have a pitch ranging from 1 2 12 to 2 12. Most roof s have a pitch in the 4 12 to 9 12 range.