Roof Pitch Angle Australia

Pitches lower than 4 12 have a slight angle and they are defined as low slope roofs.

Roof pitch angle australia.

Roof pitch and corresponding angles. Pitches above 9 12 are very highly angled and are designated steep slope roofs. After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees.

The incorrect roof pitch and panel angle will mean that the panels won t be able to self clean in the rain meaning that you ll have to manually clean them more often and the panels may not be effective if incorrectly installed. Slope the slope of a roof is represented as x 12 where x is the number of inches in rise for every 12 inches of run this is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares. For example if you reside in sydney a roof pitch of 34 would be considered ideal as this is equal to the latitude angle 33 86 of the nsw capital. Roof pitch calculator results explained.

The roof pitch calculator is a convenient online tool you can use to quickly assess the pitch of your roof to determine the length of rafters you need. This type of roof is the most popular in australia. Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled. You haven t said whether the house is one storey or two as it can make a difference.

Hip a hipped roof has three four or more pitched planes depending on the shape of the house and all planes slope downwards from a ridge at the top of the roof. Roof pitch in layman s language simply refers to the steepness of the roof. Standard roof pitches in australia are usually either 15 degrees or 22 5 degrees depending on the materials used in the roof. Hipped roofs often offer shady eaves and great strength which makes them good for high wind rated areas.

A 4 12 slope is enough to accommodate water runoff but is not suitable for regions that are affected by heavy snowfall. This forms an angle of 18 5 between the horizontal section and the roof and creates a gentle incline that is seen as a midpoint between a low pitch and medium pitch roof. On blue prints architects engineers usually display the pitch of a roof in the format shown on the image where number 4 represents a rise and number 12 represents a length. The pitch of a roof is arrived at by dividing the vertical rise and its horizontal span or what people in the roofing industry would refer to as the slope.

The most commonly used roof pitches fall in a range between 4 12 and 9 12.