Moss is the local problem here, on tile roofs and in the gutters under them. Insured crew, treatment before pressure, photos on every job.

Elsternwick is a moss suburb. We have no tidy explanation for why — plenty of Melbourne is shaded and damp — but the pattern in our own work here is hard to miss, and roof cleaning gets booked in this postcode more often than anything else we do.
It shows in what the jobs actually are. A pergola roof on Gordon Street was under growth thick enough to turn the light coming through it green. Eighty metres of guttering on Hoddle Street was packed with soil rather than loose leaf. That is organic load, and it behaves nothing like the salt that sets the schedule closer to the bay.

Moss is not dirt sitting on a roof. It is a plant with a grip, and it holds water against whatever it grows on. On tile that means the surface stays wet between showers instead of drying out, and the moisture works into the joints and under the laps.
The visible stage is a late one. By the time a roof reads green from the street, the growth has been there for seasons and has already taken hold where you cannot see it from the ground: the laps, the valleys, and the low course sitting above the gutter.
Method matters more than effort. High pressure takes moss off tile quickly and takes the glaze with it, which leaves the surface more porous than it started and brings the problem back faster. Treatment first so the growth releases, then low pressure.
Nobody walks a terracotta roof if the job can be done another way. Tile cracks underfoot and the crack does not announce itself — it waits for the next heavy rain and shows up as a stain on a ceiling.

From above, the roofs are the suburb. Glen Huntly Road runs through the middle of it, and on both sides of the strip the roofline is close to unbroken: tile, iron, and the shallow commercial roofs sitting behind the shopfronts.
Height is what makes the work awkward rather than dangerous. A good deal of the housing here sits high enough that a gutter cannot be reached off a short ladder, which is why the Hoddle Street run was cleared from the ground with vacuum equipment instead of by walking the tiles.
Height also decides what an owner can check. Nobody looks at their own roof. A photo taken from above is the only way most people ever see the state of the tiles above the gutter line, which is exactly where moss starts and where it gets furthest before anyone notices.
Glen Huntly Road is also simply how people place themselves here. It is the shops, the awnings and the run of the strip that everyone means when they say they are in Elsternwick.
The work we take on around Elsternwick. Each card opens the full service page.
Vacuumed, downpipes flushed and flow-tested, photo report the same day.
See detailsPanels washed with demineralised water, frames included, output stops dropping off.
See detailsTerracotta and Colorbond, moss and lichen treated to slow regrowth.
See detailsGlass, frames and tracks, inside and out, streak-free on the dry check.
See detailsDriveways, paving and concrete brought back without scarring the surface.
See detailsRender, cladding and painted surfaces washed at low pressure.
See details

A long single-storey house on Hoddle Street in Elsternwick with around 80 metres of guttering and downpipes blocked with compacted soil. The full run was cleared with SkyVac vacuum equipment from the ground.
Read case studyA full inside-and-outside window clean in Elsternwick, booked in mid-autumn. Five and a quarter hours on site for one technician — the longest single window job on our books this year.
Read case studyA single-storey house on Sandham Street in Elsternwick with 72 metres of guttering that had not been cleaned in about five years.
Read case studyBecause it is living, not dirt. Anything left in the pores or under the laps starts again. What changes with a proper job is the interval — treated growth releases and stays away far longer than growth that was scraped or blasted off.
You can, and it costs you the glaze. Stripping the fired surface leaves the tile more porous than it was, so it holds water better and the moss returns sooner. Low pressure after treatment is slower and lasts longer.
Not if the job can be done another way. Terracotta cracks underfoot and the crack stays quiet until heavy rain puts a stain on a ceiling. Gutters here are often cleared from the ground with vacuum equipment instead.
It is common here. Broken-down organic matter compacts into something closer to soil, and packed soil holds water instead of letting it drain. That is why a gutter can look shallow and still overflow at the outlet.
It depends on what is over it. A roof under a canopy loads far faster than one in the open, so we would rather look at yours once than put you on a schedule that suits the invoice more than the roof.
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Elsternwick jobs are posted to our Google profile with before-and-after photos as they finish.