A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal.
Roof pitch 12 2 addition.
To convert between american roofing ratios and pitch degrees follow these steps.
Divide the first part of the ratio by 12 to work out the pitch.
For that reason flat roofs are limited to these types of covering materials.
The best roofs for a 2 12 pitch roof pitch basics.
Roof pitch degree table.
Flat and nearly flat roofs a pitch of 1 in 12 or 2 in 12 cannot be covered with shingles or shakes of any material since there is not enough angle to combat the danger of blow off.
What degree angle is a 12 12 pitch roof.
Find the inverse tangent of the pitch to find the angle in degrees.
Image 1 12 to 12 12 roof pitch 7 12 pitch.
Roof is 6 12 pitch and measures at 2 400 square feet so 2400 x 1 12 2 688 2 88 sqs added for pitch.
A 12 12 pitch roof has a pitch angle of 45.
We included a roof pitch chart below the 7 12 example image and the calculator below that.
How roof pitch determines suitable roofing systems.
A pitch of 2 12 is the minimum pitch for shingles made of asphalt so your roof just barely.
Get your roof size by using this roof pitch calculator.