1
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 MelbourneSouthern SuburbsCheltenham
Dulux Accredited Applicator
Whirlybird Installation
in Cheltenham.
Cheltenham's 1950s and 60s brick veneer homes were built well before roof ventilation was standard practice, so the roof cavity above the ceiling has no real way to shed the heat and moisture that build up through the day.
10-Year Warranty
Melbourne & Surrounding Suburbs
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10yr Warranty
Fully Insured
Family Owned
Postcode3192
RegionSouthern Suburbs
Common roof stockConcrete tile · Terracotta tile · Colorbond / metal
NCC climate zoneZone 6
Whirlybird Installation · Cheltenham
Why Cheltenham roof cavities overheat
Cheltenham's 1950s and 60s brick veneer homes were built well before roof ventilation was standard practice, so the roof cavity above the ceiling has no real way to shed the heat and moisture that build up through the day. On hot afternoons that trapped heat radiates down into the living areas, and over winter, moisture from the home below can condense inside the cavity. A whirlybird continuously exhausts that air using nothing but wind and rising heat. We lift the tile course, cut a clean penetration, flash it properly for the concrete or terracotta tile common here, and seat the turbine so it works quietly for years.
Cheltenham's older brick veneer homes typically have no roof ventilation at all, so on hot days the ceiling cavity holds heat that pushes straight back down into the rooms below.
Local roof weather
Roof weather in Cheltenham
Cheltenham 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.
~130
rain days a year
days with measurable rain
November
wettest month
when a sealed roof earns its keep
~6
days over 35°C
why a cured coating matters
Extreme (11–13)
summer UV
what a fresh coating shrugs off
Melbourne UV now:
Now in Cheltenham: °C,
Annual rainfall: 800–850 mmest.
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
How we install a whirlybird
2
Position for airflow
Vents go high on the roof where the hottest air collects, balanced with the eave intake so air can actually move through.
3
Cut & flash
On a tiled roof we lift the tiles, cut a neat penetration, and bed the flashing so it is fully weatherproof.
4
Seat & seal
The turbine is seated in the flashing collar and the tiles are reinstated over the apron, leaving a clean, leak-free finish.
Roof types in Cheltenham
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.
Our standard
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 · Cheltenham
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What Melbourne homeowners say
Cheltenham whirlybird installation — your questions
It helps meaningfully. On older homes without roof ventilation, a whirlybird continuously exhausts hot air trapped in the ceiling cavity, which reduces the heat radiating down into the rooms below on warm days.
Most standard brick veneer homes here do well with two to three turbines, though we size the number to your actual roof area and pitch rather than applying a blanket number.
Not if it's flashed correctly. We bed and seal the flashing under the tile course on installation, which is the detail that determines whether a whirlybird stays weatherproof for the long term.
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