2 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.

2 12 roof slope.

Arctan 3 12 14 0 the primary purpose of pitching a roof is to redirect water and snow. 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 defined and explained. The exact roof slope in degrees is given by the arctangent.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. Modified bitumen roofing requires a minimum roof pitch of 1 4 12 or greater. If a roof rises 2 in a length of 12 this is 2 12 roof pitch. In degrees 10 2 in 12 or 1 in 6 is considered a minimum.

The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12. Thus pitch is typically greater in areas of high rain or snowfall. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. Pitch is the term used to describe the angle slope or slant of your roof.

Simply put it s a shallow roof. Roof pitch is a term describing how steep or flat your roof slope is. Roof pitch designations are comprised of two numbers indicating a ratio. Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12.

Or the colon can replace the slash as in 2 12 or 7 12. Thermoset and thermoplastic single ply roofing requires a minimum roof pitch of 1 4 12 or greater. Most roof s have a pitch in the 4 12 to 9 12 range. Definitions vary on when a roof is considered pitched.

The combination of two numbers are used to display or show the roof pitch. A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Standing seam roof systems must have a minimum roof slope of 1 4 12.

That means the roof doesn t shed water as easily as steeper roofs which is why choosing the right type of roofing material is so important. Asphalt shingles continue to be the most widely installed roof covering option in north america.