Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof.
Standard roof pitch angle south africa.
Pitches lower than 4 12 have a slight angle and they are defined as low slope roofs.
Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled.
In south africa the pitch is defined in degrees.
Pitch angle incline slope they all can be used to refer to the steepness of a roof.
As standard practice places with heavy rainfall or snow storms will have higher roof pitches compared to places that experience less rain and snow.
Because it is one of the many key elements that determine the safety of the roof over your head there is a very good reason to understand the purpose of roof pitch.
This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.
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.
Pitches above 9 12 are very highly angled and are designated steep slope roofs.
Roof pitch angle and slope factor charts.
Even if you want to use a flat roof.
Construction must also be in accordance with sans 10407 and with additional specification in sans 10400 l that are shown in the form of drawings and a table.
So a 50pitch is semi flat and a 450pitch is very steep.
Roof pitch is a term describing how steep or flat your roof slope is.
Importance of a roof pitch.
It always makes sense to the standard roof pitch angle spot on as the benefits of doing so are quite obvious.
The most commonly used roof pitches fall in a range between 4 12 and 9 12.
Simply put roof pitch is the measurement of the angle or the steepness of your roof.
If you want to know how to find the pitch of a roof then start with a calculator.
In other words roofs are designed to shed rain water quickly enough to ensure water does is not able to penetrate the roof covering.
The combination of two numbers are used to display or show the roof pitch.
With the help of these roof pitch degree calculator programs you can make sure that your home is nice and balanced.
In the roofing trade the go to term is pitch and it is expressed in terms of 12 inches so the pitch of a roof is determined by how many inches the slope rises for every 12 inches it runs horizontally.
If a thatched roof is constructed with gables without hips valleys or dormer windows it must have a pitch of 45 degrees and a clear span that is no more than 6 m.
The chief reason for having a roof pitch is to redirect water and snow away from the roof and avoid any percolation that might result from stagnation of water on the roof.
You can also calculate roof pitch even without using a roof slope calculator.
Conventional roofs are the easiest to construct and you can walk on them safely.
