Heat trap
Roof cavities at 60°C, radiating into your ceiling all night
Brisbane roof cavities regularly exceed 60°C on 34°C summer days. Post-war fibro and tile homes across Chermside, Stafford, and Aspley are worst affected: many were built with no passive vents at all. The fix is 2 to 4 Edmonds WindMaster turbines sized at 1 per 50 to 100m² of roof space, with soffit intake vents to create cross-ventilation.
60°C+ on a 34°C Brisbane summer day