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Mount Waverley homes have been extended and built up more than most, and a flue that once cleared the roof can end up in the lee of a new second storey. FreshDuct raises terminals, fits the right cowls and replaces rusted ones, then tests the draw.
Fireplace started smoking after the extension in Mount Waverley? The terminal is probably now too low for the new roof.
The commonest terminal problem we see in Mount Waverley has nothing to do with the terminal wearing out. A post-war home gets a second storey or a big rear extension, the flue that used to stand clear now sits below or beside a taller roof, and wind tumbling off that roof presses down on the cowl. The heater that drew perfectly for forty years starts filling the room with smoke, and the owner assumes something has broken inside the flue.
So before we sell a cowl we measure. The flue terminal is checked against the roof as it stands today, not as it was built, and if it no longer clears the new ridge by enough, the fix is extra flue height with a properly braced extension and the right cowl on top of it. Where the height is fine and the problem is turbulence, an anti-downdraught cowl on its own usually does the job, and we light the heater to prove it.
The ordinary wear is here too. Cowls on heaters fitted decades ago have rusted through or worked loose, and an original brick stack that still serves an open fire often has no cap at all, so rain and leaves from the garden go straight down. We replace the rusted cowl with one sized to the flue, cap the open stack with a bird guard, and photograph both from the roof.
Terminal height checks, flue extensions, anti-downdraught cowls and replacement caps for extended Mount Waverley homes, fitted from the roof and tested with the fire lit.
A flue that cleared the original Mount Waverley roofline may be well short of a new second storey. We measure the terminal against the roof as it is now and, where it falls short, extend the flue and brace it before fitting the cowl.
A heater cowl fitted decades ago has had a long life on a Mount Waverley roof and often has holes in it or is barely attached. We replace it with one sized to the flue, fixed properly, and photograph it so you can see it is sound.
Extended and renovated Mount Waverley homes are far more airtight than they were built, and a heater starved of air smokes under any cowl. We check the room has an air supply before blaming the terminal, and say so if that is the real fix.
Real photos from Melbourne jobs — not stock, not staged.




Terminal too low for the new roof, wrong cowl for the turbulence, or not enough air getting into a sealed-up room: those three cover most of the smoking heaters we see in Mount Waverley, and each needs a different fix.
We work out which it is on the day, quote that, fit it from the roof and then light the heater and watch the draw before we go, with a photo of the terminal for your records.
Documented end to end — every job, every suburb.
Flue size, terminal type and roof access checked.
The right cap or cowl for the appliance and the problem.
Firm price before any work.
Fixed and sealed from the roof, safely.
Draw checked with the cap on.
A photo of the finished cap from the roof.
Verified 5-star reviews from across FreshDuct’s duct, heating, cooling and chimney services.
“Allen provided exceptional service — friendly, professional and went above and beyond.”
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“Highly impressed with the professionalism and efficiency. On time, and no mess left behind.”
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“Exceeded my expectations. Knowledgeable, meticulous and respectful of our home.”
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“So glad I chose FreshDuct. Knowledgeable team and the whole process was smooth from start to finish.”
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“Quick, efficient and professional — we could immediately feel the difference.”
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“The technician arrived on time and was incredibly thorough — the difference at home is obvious.”
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The same local team covers the suburbs around Mount Waverley. Explore nearby areas and related FreshDuct chimney services.
Sometimes, but often the flue is now simply too low for the new roof, and a cowl alone will not overcome that. We measure the terminal against the roof as it stands, extend and brace the flue if it needs height, fit the right cowl on top and test the draw with the heater lit.
It means the fixings or the cowl itself have rusted, and the next storm may take it off, leaving the flue open to rain. We replace it with a cowl sized to the flue and fix it properly, which is a small job while it is still on the roof.
An open flue lets rain, leaves and birds straight in. A cap keeps the flue dry, keeps nests out and, on a wood heater, a spark arrestor stops embers leaving the flue.
Usually a downdraught — wind pushing back down the flue. An anti-downdraught cowl is the normal fix; we confirm the draw with a test before and after.
Yes. If we are on the roof for a sweep and the flue needs a cap, we can quote it on the spot and fit it the same visit where we have the right size.
Send your details and the office confirms a window for Mount Waverley. No call-out fee, before and after photos, and honest advice on what your chimney needs and what it does not.