“Allen provided exceptional service — friendly, professional and went above and beyond.”
Verified
Ngunnawal homes that have a wood heater almost always use a prefabricated metal flue, not a brick chimney. FreshDuct sweeps and inspects those to the same standard.
Metal flue through the roof? The flashing kit is the part most likely to leak.
Solid-fuel heating was never standard in the Gungahlin estates, so where a Ngunnawal home has a wood heater it is almost always a freestanding appliance installed with a prefabricated twin-wall insulated flue running up through the roof. There is very little masonry chimney work here, and we would rather say that plainly than pretend otherwise.
Prefabricated flues are a different technical proposition from a brick chimney, and the things that go wrong with them are specific. Sections rely on being correctly seated and secured to each other. The manufacturer specifies minimum clearances to combustible framing, and those are not always respected during installation or after later ceiling work. The flue passes through the roof via a flashing kit whose seals age, and once they do it becomes a direct water path into the roof space. And a heat shield or ceiling penetration that was compliant at installation can be compromised by insulation added later.
So an inspection here is as much about the assembly as about the soot. We sweep the full run, check that sections are correctly seated, verify clearances to combustibles at the ceiling penetration, and inspect the roof flashing kit from outside. Photographs of each, including the roof penetration, which is the part of the system nobody ever sees and the part most likely to be quietly leaking.
The things we look at first on a Ngunnawal chimney — based on the local housing and conditions.
Manufacturers specify minimum clearances between a flue and combustible framing or insulation. Later ceiling insulation upgrades routinely compromise them without anyone realising, and it is a check worth doing at every service.
The roof flashing kit around a metal flue relies on seals that age and harden. Once they fail it becomes a direct water path into the roof space, and the resulting stain usually gets blamed on the roof rather than the flue.
Twin-wall flues accumulate creosote in the same way masonry ones do, driven by how cool and slow you burn. Modern hardware does not change the chemistry, and annual sweeping applies just as it does to a brick chimney.
Real photos from FreshDuct chimney jobs. Every job we do is documented with before and after photos.



One team for the whole chimney — from a routine sweep to inspections, repairs and caps.

Contained, mess-free sweep for open fires and wood heaters.
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Visual, camera & drone checks with a full photo report.
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For heavy, baked-on or glazed creosote a sweep cannot shift.
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Leaks, cracks, flashing and masonry put right, with photos.
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Cracked, unlined or failing flues repaired or relined.
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Keep rain, birds and embers out and improve draught.
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On a prefabricated flue the sweep is the routine part. The valuable part is checking the assembly: seated joints, secure supports, correct clearances at the ceiling penetration and a sound flashing kit at the roof.
Those are the items that cause the problems people do not associate with their heater at all — a ceiling stain, a hot spot in the roof space, a smell of smoke where there should not be one.
FreshDuct services wood heater flues, outdoor fireplaces and appliance flues across Ngunnawal 7 days a week.
Gungahlin and Amaroo adjoin Ngunnawal with Belconnen and Kaleen south-west, so a booking here is easy to group with nearby work.
A safe, documented, end-to-end service — every job, every suburb.
Visual, camera or drone inspection of the chimney and flue.
We pinpoint the real cause and explain it clearly.
Only what is needed, done properly and safely.
We confirm clearances, draw and a safe result.
Before & after photos so you see the result.
Site left clean, with honest advice.
Verified 5-star reviews from FreshDuct customers across our duct, heating, cooling and chimney services. These are company-wide reviews, shown with the suburb each customer left them from.
“Allen provided exceptional service — friendly, professional and went above and beyond.”
Verified
“Highly impressed with the professionalism and efficiency. On time, and no mess left behind.”
Verified
“Exceeded my expectations. Knowledgeable, meticulous and respectful of our home.”
Verified
“So glad I chose FreshDuct. Knowledgeable team and the whole process was smooth from start to finish.”
Verified
“Quick, efficient and professional — we could immediately feel the difference.”
Verified
“The technician arrived on time and was incredibly thorough — the difference at home is obvious.”
Verified
We cover Ngunnawal and the surrounding Canberra suburbs. Explore nearby areas and related FreshDuct services.
It can, and it is worth checking. Manufacturers specify minimum clearances between the flue and combustible material, and insulation installed against or too close to a flue can breach them. It is a quick check during a normal service and a straightforward thing to correct if it has happened.
Quite possibly the flue is, not the roof. The flashing kit where a metal flue passes through the roof relies on seals that age, and once they harden and crack water tracks straight in alongside the flue. We inspect the flashing kit from the roof at every service and photograph it, because it is otherwise invisible.
Yes. FreshDuct provides chimney sweeping, safety inspections, deep cleaning, repairs, caps and cowls across Ngunnawal and the surrounding Gungahlin district of Canberra, 7 days a week. Call 04 3191 8137 or request a free quote.
A standard chimney sweep starts from $180 and a chimney safety inspection from $99, then quoted to your chimney, its condition and roof access. You get clear pricing up front — call 04 3191 8137.
We run Ngunnawal and the nearby suburbs 7 days a week and prioritise blockages and smoke problems where a fire cannot be used safely. Call 04 3191 8137 for the soonest available time.
Yes. Every FreshDuct chimney job in Ngunnawal comes with before and after photos and honest, plain-English advice — so you can see exactly what was done and why.
Sweeping, inspections, repairs and caps — a clean, documented job with photo proof. Available 7 days.
Tell us about your chimney — we respond fast, 7 days.