Flue Height Above Roof Line Australia
Please note that this rule doesn t generally apply to pellet and gas vent systems.
Flue height above roof line australia. This reduces the actual required height by 12 inches from our previous calculation of 64 inches. Per the 10 and 2 rule once you are at the level of the peak you only need to be 2 feet above it. Flues need to be 600mm higher than the highest part of the roof within 3 metres. This is for masonry chimneys.
So 28 inches plus 24 inches is a chimney height of only 52 inches. 2 australian standard as nzs 2918 2001 requires a minimum flue height of 4 6 metres above the floor on which the woodheater is located. Homes built on varying terrain have their own set of chimney and flue regulations. The minimum chimney height recommended for minimum performance of wood burning and multi fuel appliances is 4 5 m from the top of the appliance to the top of the chimney.
A wood heater installation must meet the australian standard as2918. The top of the flue opening should be 3 ft 0 92 m above any roof surface. Australian standard as nzs 2918 2001 requires a minimum flue height of 4 6 metres above the floor on which the wood heater is located. The distance between the cowl of the flue and the adjacent roof wall structure should be higher than 2 3 mtr.
Some installations may require even greater flue height to ensure adequate clearance above the roof or ridge line. For a gas vent or type l vent this height must be 2 ft 0 61m or more. To achieve the correct flue height the flue kit must be at least 4 metres in length. How far your flue pipe must extend out of your roof depends upon a the minimum height of a flue system within 3m from the highest point of the roof shall be 600mm above that point.
This means that below 38 degree roof pitches that the height of the flue outlet should be at least 1800mm above the roof when not close to the ridge and above 38 degree roof pitches the flue outlet height should be 2300mm horizontally back to the roof flue height figures are given in the table above where the flue is not close to the ridge. The location of the flue terminal of a balanced flue appliance room sealed appliance a fan assisted appliance or an appliance designed for outdoor installation shall comply with the figure below. A vertical line drawn along the up roof side of the chimney from the roof surface to the top of the chimney flue opening shall be at least 3 ft in height.