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.
Flue height above roof line australia.
Flues that are more than 3 metres away from the highest part of the roof need to be 1000mm above the flue penetration.
The top of the flue must be 60cm.
Alternatively there must be a minimum distance of 3 meters from any higher section of roof.
For a gas vent or type l vent this height must be 2 ft 0 61m or more.
This is for masonry chimneys.
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.
To achieve the correct flue height the flue kit must be at least 4 metres in length.
Flues need to be 600mm higher than the highest part of the roof within 3 metres.
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 top of the flue must be 60cm above the roofline.
The same standard also states that the end of the flue cannot be near any windows or doors so as to prevent expelled air from being pushed back into your home.
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.
11 12 to 12 12 4 0 feet above the roof surface continues to 21 12 pitch at 8 0 feet vent caps larger than 12 must be located at least 2 feet above the highest point and 2 feet higher than any portion of the building within a horizontal distance of 10 feet.
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.
For further information contact the gas safety technical information line on 1800 652 563.
Ensure the double wall flue is installed as per as nzs 2918 2018.
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.
Some installations may require even greater flue height to ensure adequate clearance above the roof or ridge line.
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.
The top of the flue opening should be 3 ft 0 92 m above any roof surface.
A wood heater installation must meet the australian standard as2918.
