2 12 Roof Slope

Or the colon can replace the slash as in 2 12 or 7 12.

2 12 roof slope.

Asphalt shingles continue to be the most widely installed roof covering option in north america. 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. Simply put it s a shallow roof. Roof pitch is a term describing how steep or flat your roof slope is.

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Roof pitch designations are comprised of two numbers indicating a ratio. 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. Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12.

2 12 roof pitch angle 9 46 degrees. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. Modified bitumen roofing requires a minimum roof pitch of 1 4 12 or greater. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

In degrees 10 2 in 12 or 1 in 6 is considered a minimum. The exact roof slope in degrees is given by the arctangent. Roof pitch defined and explained. Pitch is the term used to describe the angle slope or slant of your roof.

Thus pitch is typically greater in areas of high rain or snowfall. The combination of two numbers are used to display or show the roof pitch. Thermoset and thermoplastic single ply roofing requires a minimum roof pitch of 1 4 12 or greater. Definitions vary on when a roof is considered pitched.

The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12. Arctan 3 12 14 0 the primary purpose of pitching a roof is to redirect water and snow. The table below shows common roof pitches and the equivalent grade degrees and radians for each. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.

Most roof s have a pitch in the 4 12 to 9 12 range. 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.