Slope Of A 2 12 Roof

They have a pitch ranging from 4 12 to 9 12.

Slope of a 2 12 roof.

Other than the 45 roof slope which is 12 in 12 none of the standard roof pitches 5 in 12 6 in 12 etc are equal to a whole degree. This means for every 12 horizontal units the roof must rise a minimum of two and one half vertical units. Learn more about finding the angle of a line using our slope calculator. Asphalt shingles continue to be the most widely installed roof covering option in north america.

High pitched roofs often need extra fasteners and their pitch can be as high as 21 12. Common roof pitches and equivalent grade degree and radian angles. Then you ll be able to measure slope from an unfinished attic space under the roof. The best roofs for a 2 12 pitch roof pitch basics.

A pitch of 2 12 is the minimum pitch for shingles made of asphalt so your roof just barely. 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. What is the minimum slope for an asphalt shingle roof.

The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. Most roof s have a pitch in the 4 12 to 9 12 range. 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 locate a roof rafter board place the end of the level against the bottom edge and measure from the 12 inch mark vertically to the bottom edge of the rafter.

Minimum roof slope roof pitch r905 3 2. Conventional roofs are the easiest to construct and you can walk on them safely. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. These roofs have a pitch less than 4 12.

You can also calculate roof pitch even without using a roof slope calculator. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.