2 12 Roof Slope

Asphalt shingles continue to be the most widely installed roof covering option in north america.

2 12 roof slope.

Roof pitch designations are comprised of two numbers indicating a ratio. Thermoset and thermoplastic single ply roofing requires a minimum roof pitch of 1 4 12 or greater. In degrees 10 2 in 12 or 1 in 6 is considered a minimum. Roof pitch is a term describing how steep or flat your roof slope is.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. 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. 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. Most roof s have a pitch in the 4 12 to 9 12 range.

Definitions vary on when a roof is considered pitched. The table below shows common roof pitches and the equivalent grade degrees and radians for each. 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.

2 12 roof pitch angle 9 46 degrees. Thus pitch is typically greater in areas of high rain or snowfall. Or the colon can replace the slash as in 2 12 or 7 12. A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. Arctan 3 12 14 0 the primary purpose of pitching a roof is to redirect water and snow. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12.

The exact roof slope in degrees is given by the arctangent. Pitch is the term used to describe the angle slope or slant of your roof. 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.

Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12. Simply put it s a shallow roof.