For most home styles roof pitches fall in a range 4 12 a moderate slope up to 8 12 fairly steep.
Roof pitch problem.
Discover and understand the problems plaguing low slope roofs everywhere 1 roof leaks and moisture.
However there are also some problems with low slope roofs you have to watch for.
So the pitch of a roof is determined by how many inches the slope rises for every 12 inches it runs horizontally.
The gutter slope otherwise known as the pitch is the amount the gutters slant downward to direct the path of water flow.
For every 12 horizontal feet the roof changes 8 feet in vertical height.
Some common causes are.
An insufficient number of base flashing piles.
Incorrect fastening to the surface.
Examples of extreme slopes range from 1 4 12 almost flat to 12 12 sloping down at a perfect 45 degree angle.
Leaks are not the only problem.
If a roof increases in height by four inches for every foot of horizontal run it is considered to have a 4 in 12 pitch or just a 4 pitch talk in terms of pitches and you will always be understood in the roofing universe.
Leaks can occur for a number of reasons.
Issues such as blow offs tenting reduced wind uplift resistance and billowing are common occurrences when you have a low slope roof especially if it s not properly installed or if it s not regularly inspected and maintained.