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Whirlybird Installation Melbourne
Whirlybird installation across Melbourne's Eastern Suburbs by experienced roof plumbers. Properly placed, properly flashed, and properly sealed — so your roof space breathes without becoming a leak risk.
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BM Roof Plumbing rated 5/5 based on 135 reviews.
Heat and moisture trapped in the roof space cause problems on every level below it.
A poorly ventilated roof space can sit well above 50°C in summer. That heat radiates down through the ceiling and pushes the load on your air conditioning straight up. In winter, moisture from inside the home rises into the roof and has nowhere to go — which leads to condensation, damp insulation, and over time, mould and timber rot.
Whirlybirds are a simple fix for both. They use natural airflow to draw hot, moist air out of the roof space and pull cooler, drier air in through the eaves. No power, no maintenance, no complications — when they're installed correctly.
The catch is that "installed correctly" gets skipped a lot. The cuts have to land in the right spot relative to the roof structure. The flashing has to be formed and sealed for the specific roof profile, whether it's Colorbond corrugated, trimdec, or tile. And the number and position of whirlybirds has to actually match the roof area — one unit on a 200m² roof isn't doing much.
A whirlybird put in by someone who doesn't deal with metal roofs every day is a leak waiting to happen. Flashings that don't sit flat, sealants that crack in a year or two, screws driven into the wrong rib — all of it ends up showing up as a stain on the ceiling.
We install whirlybirds the same way we install everything else: planned, flashed properly, and finished neatly. No leaks, no callbacks.
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5 Star Google Reviews
- 10 +
Years Of Metal Roofing Experience
- 500 +
Melbourne Roofing Jobs Complete
Whirlybirds Installed by Roof Plumbers Who Know How to Flash a Metal Roof
We're based in Bayswater North and install whirlybirds across Melbourne's Eastern Suburbs on Colorbond, corrugated, trimdec, and tiled roofs. With over 10 years of roof plumbing experience, the flashing detail around a whirlybird is exactly the kind of work we do every day — so it gets done properly the first time.
Before any cuts are made, we work out how many whirlybirds the roof actually needs based on the roof area, the type of insulation, and how the eaves are vented. There's no point putting in a single unit if the roof is too big for it to make a difference, and there's no point at all if the eaves can't draw air in.
Each whirlybird is positioned high on the roof — close to the ridge where heat collects — and away from valleys, ridges, and other points where water tracks. The opening is cut clean, the flashing is formed to match the roof profile, and the whole thing is sealed and screwed down so it stays watertight in heavy rain and strong wind.
We install whirlybirds as a standalone job and as part of larger roof installations and replacements. If you have an existing roof that needs better ventilation, or you're already getting a new roof and want it set up properly from day one, get in touch.
Get A QuoteTrusted by 135+ Melbourne Home Owners
We make your roofing stress-free and always provide the best results. Read about our past services for people who trusted us with their homes. We’re incredibly proud of the relationships we’ve built and the roof’s that we’ve worked on. See what our customers have to say.
Billy is the best. Lovely chap, thorough gentleman and a sincere pleasure to deal with. Awesome communication and even though I had a cheaper option to get the job done, I decided to engage Billy as he was the only one of 3 contractors who could be bothered to get on to the roof, examine the issues and provide his professional opinion. Glad I found such an honourable tradesperson. Thank You Billy, hats off to you and utmost respect mate, ta.
Lalit T Home OwnerBilly did a terrific job fixing up our metal roof. He offered practical solutions that worked and also saved us money when compared to the options some other companies had proposed. His communication was excellent, he was punctual and a pleasure to deal with. I would highly recommend BM Roof Plumbing to anyone looking for quality workmanship and hassle-free service.
Paul D Home OwnerBM Roof plumbing completed a roof extension & fascia, gutter, and downpipe replacement on our entire house. The level of workmanship was exceptional and the communication from Billy throughout the whole process was fantastic. I would highly recommend BM roof plumbing.
Tim E Home Owner
Get a roof inspection
If you're stuggling with leaks, damage or just an old roof then contact us for a no-obligation roof inspection so that we can come out and let you know the best way to solve your roofing problem.
- Phone 0448 936 748
Frequently Asked Questions About Whirlybird Installation in Melbourne
Yes, when there's enough of them and the eaves can draw air in. A whirlybird uses natural wind to spin and pull hot, moist air out of the roof. As long as the system is sized correctly for the roof area and the eaves aren't completely sealed, they make a real difference to roof space temperature and moisture.
It depends on the roof area, the pitch, and how the roof is insulated. As a rough guide, an average suburban home generally needs two whirlybirds for proper ventilation, and larger or more complex roofs need more. We work this out during the inspection so you're not under-spec'd or paying for ones you don't need.
Not when it's installed properly. Leaks come from poorly cut openings, flashings that aren't formed to the roof profile, or sealants doing the job a flashing should be doing. Done by an experienced roof plumber, the whirlybird becomes a sealed part of the roof, not a weak point in it.
Yes. We install whirlybirds on Colorbond, corrugated, trimdec, and tiled roofs. The flashing detail differs between profiles, so the right base is fabricated or selected for each specific roof.
No. The shape of the cowl is designed to deflect rain even while spinning, and the flashing keeps water out at the roof line. The only time water becomes an issue is when a whirlybird has been installed badly or has reached the end of its life and the bearings have failed.
A new whirlybird with good bearings is essentially silent. Noisy whirlybirds are usually older units where the bearings have worn out — at that point, the unit is overdue for replacement rather than just lubrication.
For a typical home, installing two whirlybirds is generally a half-day job, depending on roof access and the type of roof. We confirm the timing once we've seen the roof.
Yes. We provide free quotes for whirlybird installation across Melbourne and the Eastern Suburbs. Get in touch to arrange a time that suits you.
We service Melbourne with a strong focus on the Eastern Suburbs, including Bayswater, Boronia, Wantirna, Ringwood, Ferntree Gully, and surrounding areas.
Recent Installation Projects
View All Projects- Gembrook, Melbourne
Tile to Metal Roof Replacement in Gembrook
Full tile-to-Colorbond re-roof on a 1970s home. Stripped the old tiles, installed a 0.60mm Colorbond roof with R1.3 insulation blanket, added whirly bird ventilation, and fitted new gutters and downpipes throughout.
- Belgrave, Melbourne
Skylight Installation & Roof Upgrade in Belgrave
Replaced tired polycarbonate roof sheeting and aging metal with a new Colorbond roof and purpose-made skylights. Cleaner finish, no more stained polycarbonate, and proper natural light without the heat and leaks.
