# 1 In 4 Roof Slope

### Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12 4 slope.

1 in 4 roof slope.

You can find the roof pitch in the form of x 12 like 4 12 or 9 12. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. 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. S grade 1 m 2 m 50 slope and roof pitch.

A 4 12 is a roof slope that rises by 4 inches for every 12 inches across. A roof that rises 4 inches for every 1 foot or 12 inches of run is said to have a 4 in 12 slope. Conventional from 4 12 1 in 3 to 9 12 3 in 4. You can also calculate roof pitch even without using a roof slope calculator.

1 pitch 1 01 2 pitch 1 02 3 pitch 1 03 4 pitch 1 05 5 pitch 1 085 6 pitch 1 12 7 pitch 1 16 8 pitch 1 21 9 pitch 1 25 10 pitch 1 31 11 pitch 1 36 12 pitch 1 42. 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. This means for every 12 horizontal units the roof must rise a minimum of one half vertical unit.

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 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. Roof pitch is the slope created by the rafter. 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.

Roof pitch on the form x 12 can be expressed in grades as. 0 pitch 1 00x the roof area. 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. They have a pitch ranging from 4 12 to 9 12.

Slope as grade for an elevation of 1 m over a distance of 2 m can be calculated as. You can go by the measurements taken by walking the roof. Most roof s have a pitch in the 4 12 to 9 12 range. 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.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. 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. Conventional roofs are the easiest to construct and you can walk on them safely.

### Building Guidelines Drawings Section A General Construction Principles Figures 1 10 General Construction Roof Construction Building Roof

Source : pinterest.com