If your windows face the water in Maroubra you will know the film that returns within weeks of every clean. That is salt, not dirt, and wiping it with tap water simply redeposits minerals as it dries. We clean with purified water through a water-fed pole, which lifts the salt and dries without spotting.

Glass in Maroubra has a harder life than glass a few kilometres inland. Onshore wind carries a fine salt aerosol that settles on every exposed pane, and because salt attracts moisture it stays slightly tacky, catching sand and dust rather than letting it blow clear. The result is the grey haze that dulls an ocean view even when the glass looks dry.
East and south-east elevations take the worst of it, which is unfortunate given those are usually the windows people care most about. Aluminium frames of the era common through the suburb also trap salt in the tracks and drainage slots, and left long enough that shows up as corrosion pitting around the sill.
The housing mix matters for access. Alongside freestanding homes there are many walk-up flats and newer three-storey townhouses near the beach where upper-level glass is out of reach and strata rules discourage ladder work over garden beds and paths.
Water-fed poles solve both problems. We reach three storeys from the ground and clean with purified water that carries no dissolved minerals, so the glass dries clear with no squeegee marks and no detergent film for salt to key into.
Most Maroubra owners have tried cleaning their own windows and been frustrated by how quickly the haze returns. Understanding why is the useful part.
Tap water in Sydney carries dissolved minerals. When you wash salt-filmed glass with it and let it dry, those minerals are left behind as a fine deposit, which then attracts and holds the next round of salt. Every clean done that way makes the next one slightly harder. Purified water carries nothing, so the glass dries genuinely clear and stays clear noticeably longer.
Beyond appearance, there is hardware to protect. Salt collecting in aluminium window tracks and drainage slots causes corrosion pitting over time, and a corroded track is not a cleaning problem any more. Regular clearing of the tracks, not just the glass, is what prevents it.
There is also the plain value argument. If you paid a premium for a home within reach of the beach, the view is part of what you bought, and a permanent grey cast across the glass is quietly taking some of that away.
Water-fed poles, purified water and spot-free glass up to three storeys, without a ladder against your gutters.