Roof Cleaning in Coogee

Coogee is more strata than house, and that shapes the work more than the salt does.

The suburb is dense with 1930s to 1960s red brick flat buildings, and their roofs are low pitch or near flat, frequently behind a parapet. Low pitch means water drains slowly, so salt and grit settle in the pans rather than washing off, and the roof carries plant, aerials and now solar, each of which traps debris. On tile-roofed blocks of the same era the pitch is shallow enough that lichen holds on where it would slide clear on a steeper roof.

Sitting on a bay rather than an open surf beach changes the exposure pattern. The headlands at Dolphin Point and the southern cliffs funnel wind up the slope, so properties two or three streets back can weather harder than those on the beachfront itself.

The Norfolk Island pines along the beachfront and the coastal banksias behind them drop a fine needle litter that packs into valleys and box gutters where it holds salt-laden moisture against the roof.

We work at low pressure matched to material and finish with a thorough fresh-water rinse, and manage wash water in line with Randwick City Council requirements.

For a Coogee owners corporation, the roof is usually the single largest deferred-maintenance item on the building, and salt shortens every timeline on it.

Low-pitch metal roofs are the concern. Salt and grit that sit in the pans rather than washing off eventually take the coating, and once corrosion starts around fixings and laps it runs along the sheet. Replacing roof sheeting across a whole block arrives as a special levy, and it is almost always preceded by several years in which cleaning would have been the cheaper intervention.

There is a water ingress angle that matters more here than in a suburb of freestanding houses. Debris on a low-pitch roof feeds straight into box gutters and outlets, and on a flat-roofed block that path ends inside a top-floor unit rather than over an edge. What follows is an insurance claim, a make-good and a dispute about whether maintenance was reasonable.

For the freestanding homes and duplexes the case is more familiar: tile degradation, ridge pointing, and kerb appeal in a suburb where a great deal of stock turns over or is let.

Because we are on the roof anyway, lifted sheets, failing flashings and cracked tiles get reported while they are still small.