Normal Roof Pitch Australia

For that reason flat roofs are limited to these types of covering materials.

Normal roof pitch australia.

Standard roof pitches in australia are usually either 15 degrees or 22 5 degrees depending on the materials used in the roof. The most commonly used roof pitches fall in a range between 4 12 and 9 12. Often you express roof pitch as the ratio between the rise and the run in the form of x 12. You can assess this in two ways either as the roof pitch angles which the rafters make with the horizontal or the proportion between the run and the rise of the roof.

Roof pitch varies depending on culture climate style and available materials. Flat and nearly flat roofs a pitch of 1 in 12 or 2 in 12 cannot be covered with shingles or shakes of any material since there is not enough angle to combat the danger of blow off. Greek says one must keep rafter length in range of 1 9 to 1 7 th of span but as per roman style the standard dimensions are kept about 1 3 to 2 9 th of span with an angle of 23 to 24 degree. Pitches lower than 4 12 have a slight angle and they are defined as low slope roofs.

Having such a diverse environment mean the needs for roofing materials vary. As a rule of thumb most solar installers state that your latitude is the best angle to mount solar panels to achieve maximum effiency. In this post we want to share a quick guide to australian roof types. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.

In the uk the typical house has a pitch between 40 50 although 45 should be avoided. So my latitude here in proserpine is 20 4 degrees close enough to the normal roof pitch of 22 5 that any loss of efficiency would be next to nothing. Australia a country like no other boasting a topography that includes desert plains and vast outback ranges to dense rainforests and coastal seasides. 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.

Roof pitch refers to the slope which the rafter creates. The normal single story tiled roof the old standard was 22 5 and was known as a quarter pitch qtr of plumb vertical but these days there is no such thing as normal. Usually average roof pitch is determined using the same roof length method. Pitches above 9 12 are very highly angled and are designated steep slope roofs.

Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled. Archive view return to standard view.