Epdm perfect for approved flues.
Flue roof flashing nz.
Chimney flashing round flue.
If you look at the the nz building code it will show you the type of flashing you will need.
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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.
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New zealand metal roofing manufacturers inc.
But a roofer is probably needed if you can t do it yourself.
I think you need to get a new piece of steel and under flash it under your existing steel flashing.
Dektite epdm polymer flashing have been officially tested by the coal corporation of victoria australia and conform to all australian and uk standards on approved flue systems.
Dektite flashings are a range of epdm or silicone polymer flashings distributed in nz by dlm and manufactured by deks industries pty ltd australia.
The flue shop 63 montgomery cresent upper hutt wellington.
Dektite resist ozone and uv light damage and retains full flexibility under temperatures from 50 degrees c to 115 degrees c and up to 150c degrees c intermittently.
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.
This ensures correct operation of the burner limits back draughts and prevents flue gases impinging on the roof.
They will remove that flue flashing sock and overflash it with a steel flashing.