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 MelbourneWestern SuburbsBraybrook
A number of Braybrook's established homes predate standard roof ventilation, so heat and moisture in the roof cavity often have nowhere to go, especially under the shaded, tree-covered pitches common near Cherry Creek where trapped moisture lingers longer.
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Whirlybird Installation · Braybrook
A number of Braybrook's established homes predate standard roof ventilation, so heat and moisture in the roof cavity often have nowhere to go, especially under the shaded, tree-covered pitches common near Cherry Creek where trapped moisture lingers longer. A whirlybird uses wind and rising heat to continuously draw that air out, reducing moisture build-up that can affect roof timbers and cutting summer heat load in the ceiling below. It's a straightforward retrofit on the concrete tile common across the suburb.
The tree cover near Braybrook's creek corridor keeps some roof pitches shaded and slower to dry out after rain, which makes ventilation more valuable than on a fully sun-exposed roof.
Local roof weather
Braybrook sees around ~7 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 · Braybrook
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