Roof Ventilation
Bentley

Roof Ventilation for Bentley Homes

Roof ventilation for Bentley 6102, about 7km south-east of the Perth CBD in the City of Canning. Owner-operated, fully insured, and priced up front before anything is booked.

Bentley sits about 13km from the coast, so the sea breeze arrives later in the afternoon and with noticeably less punch than it has closer to the water. Turbines still contribute, but there is a hot, still window through the middle of the day where they do very little.

Housing through Bentley is dominated by post-war brick and tile. Post-war brick-and-tile homes typically run a low-to-medium pitch with a modest eave overhang. Roof cavities are shallow, which means they heat up fast and transfer that heat down to the ceiling quickly.

Insulation in these houses is frequently original, thin, or has settled and gone patchy over decades. Ventilation will not fix poor insulation, but it does stop the cavity above it acting as a heat store all evening — which is usually the complaint that prompts the call.

Inland — late afternoon breeze

Whirlybirds or Solar Vents in Bentley?

Bentley is the part of Perth where this question actually has two defensible answers. The breeze gets here, but late — so a turbine does real work from mid-afternoon and very little before it, which is unfortunately when the roof does most of its heating.

Solar changes the timing rather than just the volume. Sun on the panel means the fan is running from mid-morning, so the heat gets pulled out as it builds instead of after it has already soaked into your ceiling. At $750 it costs more up front than a turbine, and on most Bentley roofs it does noticeably more.

For a smaller home with decent eave venting, three turbines at $950 is still a perfectly reasonable answer. Dave will give you the cheaper recommendation when it is the right one.