Unlike the older streets at Burleigh Heads, Burleigh Waters was largely developed as detached family housing on regular blocks with proper driveways. Access is rarely the constraint; the doors are mostly double-width sectional doors with an opener, and the garage is the main entry to the house.
That produces a very consistent wear pattern. Wide doors are heavier, heavier doors work their counterbalance harder, and a garage used as the family entrance racks up cycles quickly. Springs, cables and rollers are the components that reach the end of their life first.
Canal-front and near-canal streets add a humidity and salt factor that is real but milder than the beachfront. It is enough to matter for hardware over a decade; it is not enough to justify treating every Burleigh Waters door as a coastal-exposure case.
This describes patterns in enquiries from the area. It is not a claim about your
particular property, and it is not a diagnosis.