4 12 Pitch Roof Slope

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.

4 12 pitch roof slope. A flat roof has a slope of 2 in 12 or less. Low slope roofing which requires special materials and techniques to avoid leaks and ranges from 1 12 2 12 to 4 12 1 in 3. Slope the slope of a roof is represented as x 12 where x is the number of inches in rise for every 12 inches of run this is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares. Angle the angle of a roof is the same as the roof s slope except instead of being.

There are two main categories of roofing. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. The gentle slope of a 4 12 pitch roof falls. 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.

Roof pitch calculator results explained. The basic ranges of pitch are not uniformly defined but range from flat which are not perfectly flat but sloped to drain water up to 1 2 12 to 2 12 1 in 24 to 1 in 6. Most roof s have a pitch in the 4 12 to 9 12 range. A low slope roof is anywhere from 2 in 12 to 4 in 12.

A 4 12 is a roof slope that rises by 4 inches for every 12 inches across. A 4 12 roof pitch indicates the roof rises 4 inches in height for every 12 inches as measured horizontally from the edge of the roof to the centerline. 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. This will give you the rise over run or pitch.

The slope ratio represents a certain amount of vertical rise for every 12 inches of horizontal run. 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. For example if you measure 4 inches the pitch of your roof is 4 12. The combination of two numbers are used to display or show the roof pitch.

Anything more than 9 in 12 is considered steep. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. Conventional slope roof range between 4 in 12 and 8 in 12. The table below shows common roof pitches and the equivalent grade degrees and radians for each.

A roof that rises 4 inches for every 1 foot or 12 inches of run is said to have a 4 in 12 slope. The run always remains constant at 12 inches.