Assess the cavity
We look at roof size, pitch and existing airflow to work out how many vents you actually need — no over-selling.
Whirlybird Installation MelbourneSouth-Eastern SuburbsDoveton
Doveton's commission-era homes from the 1950s and 60s were built without any provision for roof ventilation, so the roof cavity is a sealed space that heats up through the day and holds that heat well into the evening.
Melbourne & Surrounding Suburbs













Whirlybird Installation · Doveton
Doveton's commission-era homes from the 1950s and 60s were built without any provision for roof ventilation, so the roof cavity is a sealed space that heats up through the day and holds that heat well into the evening. With the suburb's moderate tree cover, many roofs get plenty of direct sun exposure, which pushes cavity temperatures higher and makes upstairs rooms harder to keep cool over summer. A whirlybird uses wind and rising hot air to continuously vent that trapped heat out of the roof cavity, with no electricity needed, drawing in cooler replacement air through the eaves. It's a simple retrofit for homes of this era that were never designed with airflow in mind, and it also helps clear damp air during Doveton's wetter months.
Doveton's roofs get more direct sun than the leafier eastern suburbs, so heat build-up in the roof cavity is the main driver here, and a whirlybird gives that trapped hot air somewhere to go rather than radiating down into the ceiling.
Local roof weather
Doveton sees around ~6 days above 35°C a year, and on those days an unventilated roof cavity turns into a heat store right above your ceilings.
Climate normals (2015–2024) from Open-Meteo ERA5 reanalysis — gridded reanalysis, so rainfall is an estimate that runs a little high versus long-term gauge averages. Live UV from ARPANSA, live conditions from Open-Meteo.
The process
We look at roof size, pitch and existing airflow to work out how many vents you actually need — no over-selling.
Vents go high on the roof where the hottest air collects, balanced with the eave intake so air can actually move through.
On a tiled roof we lift the tiles, cut a neat penetration, and bed the flashing so it is fully weatherproof.
The turbine is seated in the flashing collar and the tiles are reinstated over the apron, leaving a clean, leak-free finish.
Installation differs by roof: on tiled roofs we cut and flash the penetration under the tile course, while on metal roofs the vent is flashed directly into the sheeting. Both need the flashing done properly — a rushed vent install is a classic future leak.
Installations are carried out by an insured team and the workmanship is backed by a 7-Year Workmanship Guarantee and a 10-Year Dulux Acratex Material Warranty.
Current offer · Doveton
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