The table below shows common roof pitches and the equivalent grade degrees and radians for each.
Steep slope roofs have a pitch of.
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.
Examples of extreme slopes range from 1 4 12 almost flat to 12 12 sloping down at a perfect 45 degree angle.
However in general terms low slope roofs commercial roofs are those below 2 12 or 3 12 while steep slope roofing would consists of roof pitches above either 2 12 or 3 12 and higher.
Most roof s have a pitch in the 4 12 to 9 12 range.
2 12 4 12 conventional slope roof.
Buffalo new york and montreal quebec canada specify 6 in 12 a pitch of approximately 26 6 degrees.
Roofs with pitches above 3 12 often use architectural shingles or modified bitumen materials.
As a homeowner it s not crucial to know the exact measurement of your roof s slope.
In some areas building codes require a minimum slope.
For most home styles roof pitches fall in a range 4 12 a moderate slope up to 8 12 fairly steep.
The slope of a roof has an effect on the interior volume of a building the drainage.
The important things to know are the effects of a low slope roof and a steep slope roof.
9 12 20 12 steep slope.
Roof slope is a very important aspect and it is considered the primary factor in roof design.
High and low pitch examples two examples at each end of the spectrum.
Also the pitch is what is taken into consideration when determining if your roof follows the building codes.
The steepness of your roof also known as the roof pitch or slope is an important decision to make for your property especially when considering residential roofing changes.