1
Inspection
We check tile condition, valleys and pointing first, and photograph anything cracked or corroded before we touch it.
Roof Cleaning MelbourneNorthern SuburbsPreston
Dulux Accredited Applicator
Roof Cleaning
in Preston.
On Preston's period homes the roof is often original terracotta, and terracotta that has weathered for decades needs a gentle hand.
10-Year Warranty
Melbourne & Surrounding Suburbs
4.9 Rating | Google Reviews
10yr Warranty
Fully Insured
Family Owned
Postcode3072
RegionNorthern Suburbs
Common roof stockConcrete tile · Terracotta tile
Separate houses55.7%
Elevation68 m
NCC climate zoneZone 6
Roof Cleaning · Preston
What's really growing on Preston roofs
On Preston's period homes the roof is often original terracotta, and terracotta that has weathered for decades needs a gentle hand. A soft wash is the right approach here: a biocide treatment kills the moss, lichen and mould at the root, then low-pressure washing lifts it away without stripping the tile surface or driving water under the laps. High pressure might look faster, but on brittle old Preston tiles it cracks them and defeats the point of cleaning at all. On the post-war concrete-tile homes the same soft-wash method brings the colour back and clears the biological growth that has been holding moisture against the roof. We check and photograph the tiles and pointing as we go.
Preston's tight blocks and mature street trees keep a lot of roofs shaded and slow to dry, so the south-facing pitches green up with moss and lichen well before the sunny side does.
Local roof weather
Roof weather in Preston
With rain falling on around ~120 days a year and shaded, south-facing pitches staying damp, moss and lichen take hold quickly on Preston roofs.
~120
rain days a year
days with measurable rain
November
wettest month
when a sealed roof earns its keep
~7
days over 35°C
why a cured coating matters
Extreme (11–13)
summer UV
what a fresh coating shrugs off
Melbourne UV now:
Now in Preston: °C,
Annual rainfall: 700–750 mmest.
Climate normals (2015–2024) from Open-Meteo ERA5 reanalysis — gridded reanalysis, so rainfall is an estimate that runs a little high versus long-term gauge averages. Live UV from ARPANSA, live conditions from Open-Meteo.
The process
How a True Roof soft wash works
2
Treat
A biocide treatment is applied so moss and lichen are killed at the root, not just wiped off the top.
3
Soft wash
Low-pressure washing lifts the dead growth and grime without driving water under the tiles or stripping the surface.
4
Clear & check
We flush the wash debris out of the gutters and do a final check so you are left with a clean roof and clear downpipes.
Roof types in Preston
Soft washing suits terracotta and concrete tile roofs and older, more fragile tiles that high pressure would damage. Colorbond and metal roofs are washed even more gently. If a roof is due for more than a clean, we will flag whether sealing or restoration is the better spend.
Our standard
Our cleaning crews are fully insured, and any repair work we recommend is backed by a 7-Year Workmanship Guarantee and a 10-Year Dulux Acratex Material Warranty.
Roofing showcase
Before & after.
A look at what restoration, cleaning and repair can do for a tired roof.
Before After Full roof restoration 
Before After Tile clean and recoat 
Flashing repair 
Roof clean What affects your price
What drives the cost of cleaning in Preston
- Whether the roof is fragile period terracotta or hardier concrete tile.
- The amount of moss, lichen and mould to treat and wash back.
- Roof access, given Preston's mix of low cottages and two-storey infill.
The hidden cost of moss
Clean it now. Replace it never.
| Soft wash clean from $750 | Tile replacement + re-roof $8,000 – $20,000+ | |
|---|---|---|
| Removes moss, lichen, and algae at the root | ||
| Preserves manufacturer tile warranty | ||
| Safe, no high-pressure tile fracturing | ||
| Completed without disrupting the household | ||
| Restores tile porosity and water run-off | ||
| Prevents pointing deterioration beneath the moss |
Moss is not cosmetic. It is structural damage in slow motion.
Lichen and moss anchor into tile surfaces and hold moisture against them 24 hours a day. That constant dampness accelerates freeze-thaw micro-cracking through Melbourne winters, erodes pointing mortar, and quietly voids the tile manufacturer's warranty. Most homeowners find out the hard way when tiles start fracturing or when their insurer queries maintenance records after a claim. A soft wash costs a fraction of one tile replacement row and it buys back years of tile life.
Book online — free assessment
We'll tell you honestly whether a clean is all you need, or if there's more going on.
Current offer · Preston
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What Melbourne homeowners say
Preston roof cleaning — your questions
Yes — that is exactly why we use it. Soft washing cleans at low pressure with a biocide that does the work chemically, so fragile Preston terracotta is cleaned without the cracking and surface damage that high pressure causes.
Cleaning reveals problems like cracked tiles or failed pointing, but it does not repair them. If we spot something during the wash we photograph it and quote the fix separately, with no obligation to go ahead.
Not quickly. Killing the growth at the root slows regrowth well beyond a simple rinse. On shaded Preston roofs under trees it will return eventually, but a proper soft wash buys you years, not months.
Ready to sort your Preston roof?
Fastest way: call now and talk to a roofer, not a call centre. Prefer to see pricing and this month's offer first? Book online — it takes 30 seconds.
Mon–Fri 7am–6pm · Sat 8am–2pm · Free, no-obligation quotes