Solar Panel Cleaning in Bondi

Waverley Council's street tree masterplan describes Bondi as part of the coastal slopes, the area just back from the frontline coast where salt-laden and strong onshore winds still predominate. Panels in this zone collect a thin salt film that dries into a haze, and a light shower can leave it in streaks rather than clearing it.

Roof type shapes the job. Many inter-war flats in Waverley have a flat roof concealed behind a parapet, according to council's guidelines, while others carry medium-pitched hipped roofs. A panel on a low-angle frame holds dust, pollen and droppings longer than one on a steep pitch, because rain runs off it more slowly.

Trees play a smaller part than in a leafy suburb, but council planted Norfolk Pines and Watergums in Waverley Park in 2020, and street and park trees drop pollen and attract birds. Bird droppings are among the most stubborn marks on a panel, and they shade the cells beneath them until removed.

Access is worth thinking about early. On a block of flats the roof is usually common property, so the clean is arranged through the owners corporation or managing agent rather than one resident.

Dirt sitting on the glass reduces the light reaching the cells, so a clean is about getting the output the system was designed for. Salt haze and soot film spread evenly over the whole surface, which makes the loss easy to overlook because nothing looks obviously wrong from the street.

The method protects the investment as well. Purified water with no detergent dries spot-free and is gentle on the glass and its coatings, so there is no chemical residue left behind to attract more dust. It also means the wash water running off the roof carries nothing worse than what came off the panels.

On a shared building, a documented clean is useful for the committee. Before-and-after photos are supplied with every job, which helps when reporting back to owners or comparing the system's figures before and after.

Fully insured with $10 million public liability, and with team members certified to work safely at heights, the crew can be cleared by a strata manager who needs to see that paperwork before anyone goes onto common property.