Flue Height Above Roof Nz

How high does the flue have to go.

Flue height above roof nz.

Refer to diagram b. Checked the flue height above the roof is indicated and that it meets the height requirements set out in as nzs 2918 2001 domestic solid fuel burning appliances installation inspection of the installed heater. For an enclosure simulating a chimney this raises the question of how high above the enclosure to terminate the flue. The enclosure can be extended to meet the 600 mm or 1 000 mm height requirement but there is no guidance in as.

C the flue pipe must be more than 3 metres from any nearby structure. April 2012 nz metal roof and wall cladding code of practice table of contents v 2 2 page 3 table of contents 1 1 0 table of contents 2 0p erformance 3 0 construction load 4 0 d esign 5 0f lashings 6 0p enetrations 7 0i nstallation 8 0 roof drainage 9 0 plastic roof lighting 10 0 pressed metal tiles. For a gas vent or type l vent this height must be 2 ft 0 61m or more. Homes built on varying terrain have their own set of chimney and flue regulations.

A lf the flue pipe is within 3 metres of the ridge the flue pipe must protrude at least 600mm above the ridge of the roof. As nzs2918 2001 4 9 1 a states the flue pipe shall extend not less than 4 6m above the top of the floor protector. Refer to diagram c. Flues that are more than 3 metres away from the highest part of the roof need to be 1000mm above the flue penetration.

When installing a new twinwall flue system if the flue exits the roof within 600mm horizontally from the ridge high point of the roof then the flue must extend a minimum of 600mm above the ridge. The flue pipe shall extend not less than 4 6m above the top of the floor protector. This ensures correct operation of the burner limits back draughts and prevents flue gases impinging on the roof. This is for masonry chimneys.

The top of the flue opening should be 3 ft 0 92 m above any roof surface. New zealand metal roofing manufacturers inc. Flues need to be 600mm higher than the highest part of the roof within 3 metres. If the flue is over 3 m from the roof apex the flue top must be 1 000 mm minimum above the roof and at least 3 m horizontally from the roof surface.

B if the distance from the ridge is more than 3 metres the flue pipe must protrude at least 1000mm above roof penetration. 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.