2 12 Roof Slope

Standing seam roof systems must have a minimum roof slope of 1 4 12.

2 12 roof slope.

In degrees 10 2 in 12 or 1 in 6 is considered a minimum. If a roof rises 2 in a length of 12 this is 2 12 roof pitch. Modified bitumen roofing requires a minimum roof pitch of 1 4 12 or greater. A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance.

The combination of two numbers are used to display or show the roof pitch. Or the colon can replace the slash as in 2 12 or 7 12. Pitch is the term used to describe the angle slope or slant of your roof. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.

Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12. Asphalt shingles continue to be the most widely installed roof covering option in north america. Simply put it s a shallow roof. Thus pitch is typically greater in areas of high rain or snowfall.

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. Arctan 3 12 14 0 the primary purpose of pitching a roof is to redirect water and snow. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. 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. 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. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. The exact roof slope in degrees is given by the arctangent.

Roof pitch defined and explained. 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. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12.

Roof pitch is a term describing how steep or flat your roof slope is. The table below shows common roof pitches and the equivalent grade degrees and radians for each.