The slope of a roof often referred to as the pitch is determined by rise over run the roof s vertical rise in inches for every twelve inches of horizontal length the run.
Steep pitch roof.
And steep slope roofing which is above 9 12 3 in 4 21 12 7 in 4 and may require extra fasteners.
Thus they are often tempted to go with a low slope.
The slope or pitch of the roof is determined by the vertical rise in inches for every horizontal twelve inch 12 length called the run.
When making roof decisions many people think these roofs require more materials and cost more money.
A roof with x rise 12 run slope means that for every 12 inches horizontally run it rises x inches.
The basic ranges of pitch are not uniformly defined but range from flat which are not perfectly flat but sloped to drain water up to 1 2 12 to 2 12 1 in 24 to 1 in 6.
Low slope roofing which requires special materials and techniques to avoid leaks and ranges from 1 12 2 12 to 4 12 1 in 3.
Low slope roofs are from 0 to 3 12 in pitch.
A roof with a high pitch is commonly 6 12 or 6 inches in height for every 12 inches across.
Steep slope roofing the slope of a roof is often referred to as the pitch.
For most home styles roof pitches fall in a range 4 12 a moderate slope up to 8 12 fairly steep.
Step 1 safety.
Examples of extreme slopes range from 1 4 12 almost flat to 12 12 sloping down at a perfect 45 degree angle.
The possibility of slipping and falling makes working on any roof dangerous but it s especially so if the roof rises more than 4 feet for every 12 feet of horizontal span.
Some sources consider low slope to include 3 12 pitch roofs.
In my case the roof s pitch was so extreme no local roofers wanted to mess with it.
So a roof with four inches of rise every 12 inches horizontally run would have a slope of 4 12 sometimes displayed as 4 12.
Conventional from 4 12 1 in 3 to 9 12 3 in 4.
High and low pitch examples two examples at each end of the spectrum.
Roofing can be dangerous.
The steepness of your roof known as the roof pitch or slope is an important decision to make for your home.
See low slope roofing.
Knowing the difference between a steep pitch a low pitch or somewhere in between is something you want to be comfortably informed about when considering roofing changes.
However 6 12 and higher rooftops are valuable and for good reason.
7 advantages of having a steep pitch roof.
With the proper tools and materials this home improvement job will probably take a minimum of 2 days to complete providing the weather is clear.
The slope of the roof is known at the pitch.