Standard Roof Pitch Angle South Africa

Roof pitch angle and slope factor charts.

Standard roof pitch angle south africa. 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. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. Simply put roof pitch is the measurement of the angle or the steepness of your roof. Roof pitch is a term describing how steep or flat your roof slope is.

With the help of these roof pitch degree calculator programs you can make sure that your home is nice and balanced. High pitched roofs often need extra fasteners and their pitch can be as high as 21 12. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. The combination of two numbers are used to display or show the roof pitch.

Conventional roofs are the easiest to construct and you can walk on them safely. Even if you want to use a flat roof. So a 50pitch is semi flat and a 450pitch is very steep. The most commonly used roof pitches fall in a range between 4 12 and 9 12.

You can also calculate roof pitch even without using a roof slope calculator. 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. Roofs are almost never designed to be waterproof but are rather weather proof. 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.

Pitches above 9 12 are very highly angled and are designated steep slope roofs. In south africa the pitch is defined in degrees. In other words roofs are designed to shed rain water quickly enough to ensure water does is not able to penetrate the roof covering. 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.

Importance of a roof pitch. Pitch angle incline slope they all can be used to refer to the steepness of a roof. 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.

As standard practice places with heavy rainfall or snow storms will have higher roof pitches compared to places that experience less rain and snow. They have a pitch ranging from 4 12 to 9 12. 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.