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 SuburbsBayswater
Many of Bayswater's 1960s-to-80s brick veneer homes were built with minimal roof ventilation, so on hot days the cavity above the ceilings stores heat that radiates down into the bedrooms all evening.
Melbourne & Surrounding Suburbs













Whirlybird Installation · Bayswater
Many of Bayswater's 1960s-to-80s brick veneer homes were built with minimal roof ventilation, so on hot days the cavity above the ceilings stores heat that radiates down into the bedrooms all evening. Whirlybirds let that hot, trapped air escape. On Bayswater's concrete-tile roofs we lift the tiles at the vent, cut a neat penetration, bed the flashing watertight, then seat the turbine and reinstate the tiles. A few correctly placed vents make a real difference to how the upstairs feels on a hot day, and in winter they clear the warm, damp air that would otherwise condense in the roof and feed mould.
Bayswater sits at the foot of the ranges, so while it sees fewer extreme hot days than the flatter western suburbs, the moisture that ventilation clears through winter matters just as much here.
Local roof weather
Bayswater sees around ~4 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 · Bayswater
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