Roof Cleaning in Brisbane.
Brisbane roofs grow moss and lichen the same way the walls grow mould — the subtropical humidity does it. Concrete tile, terracotta and Colorbond all develop visible biological growth, worst on shaded southern pitches and under tree cover. We soft-wash roofs, treating the moss and lichen at the spore level so the surface stays clean for years rather than being scoured off and regrowing in months.
High pressure on a tiled roof cracks tiles, strips the protective glaze and forces water under the laps — which is why soft washing is the only correct method here. A full soft-wash roof clean typically holds for 3–5 years in Brisbane; heavily shaded roofs may want a top-up at the two-year mark. Every job is quoted in writing within 24 business hours.
What makes Brisbane exteriors different to clean?
Brisbane sits in a humid subtropical climate zone (Köppen Cfa). Summer humidity above 70%, frequent thunderstorms from October to March and year-round warmth combine to create the perfect environment for mould, algae and lichen. Rendered walls, painted weatherboard and concrete tile roofs all develop visible biological growth within 12–18 months without intervention — faster on shaded southern aspects and properties under heavy tree cover. Pressure alone doesn't fix this; the surface looks clean for a few months and the spores grow back. Soft washing kills the growth at the spore level so the regrowth interval is years, not months.
How we approach roof cleaning in Brisbane.
- 01
Roof assessment
We identify the roof type (concrete tile, terracotta, Colorbond, tin), check for cracked or slipped tiles and confirm pitch for safe access.
- 02
Gutter pre-clean
Gutters are cleared first so the wash run-off doesn't block them on the way down.
- 03
Soft-wash treatment
Biocidal detergent is applied via low-pressure pump across the full roof, including the moss-prone southern aspect, and dwelled for 15–20 minutes.
- 04
Controlled rinse
Roof is rinsed at safe pressure, top-down. We don't drive water under tile laps or behind ridge capping.
- 05
Final inspection and downpipe flush
Each downpipe is flushed clear of dislodged debris and we walk the property with the customer before leaving.
What this service covers.
Concrete tile
Soft wash; pressure strips the cementitious surface and accelerates re-mossing.
Terracotta tile
Soft wash only. Aged terracotta is brittle and pressure dislodges tiles and ridge capping.
Colorbond / metal
Soft wash. Pressure pierces aged paint and creates rust-prone scratch lines.
Decramastic / tin
Soft wash; pressure tears the granular finish off the panel.
Roof Cleaning across Brisbane.
- New Farm
- Teneriffe
- Hamilton
- Ascot
- Bulimba
- Paddington
- Toowong
- Indooroopilly
- Chelmer
- Graceville
- Wilston
- Clayfield
- Hendra
- Newstead
- Bardon
- Auchenflower
- Kenmore
- Carindale
- Holland Park
- Wynnum
- + surrounding suburbs
Roof Cleaning in Brisbane, answered.
Is it safe to pressure wash a tile roof in Brisbane?
No. High pressure cracks concrete and terracotta tiles, strips the surface glaze and drives water under the laps into the roof cavity. Soft washing kills the moss and lichen chemically at low pressure, which is the correct and safe method for any tiled roof.
How often does a Brisbane roof need cleaning?
Every 3–5 years for a full soft-wash clean. Roofs on shaded southern pitches or under heavy tree canopy grow back faster and may want a top-up treatment around the two-year mark to stop thick lichen building up.
Will roof cleaning fix the staining for good?
Soft washing kills the growth at the root, so the staining doesn't return for years rather than months. It won't change the age of the tiles, but it removes the moss, lichen and black streaking and dramatically improves how the roof looks from the street.
How long does a roof clean last?
A soft-wash roof clean typically stays visibly clean for 3–5 years. Properties heavily shaded by trees or close to the coast may see regrowth on the southern aspect at the 2–3 year mark; a top-up treatment every 2 years keeps it indefinitely clean.
Will roof cleaning damage my tiles?
Not the way we do it. Soft washing applies chemistry under 500 PSI — no different in pressure than a garden hose. Damage almost always traces back to high-pressure cleaning of aged or brittle tiles. Cracked or already-failing tiles will be flagged in the assessment so you can decide on replacement before we start.
Do I need to do anything to prepare?
Move cars from the carport-adjacent driveway, close all windows on the day, and let us know if the rainwater tank should be disconnected. We'll handle the rest.
Can the runoff go into my rainwater tank?
We disconnect the tank inlet before treatment and reconnect it after the first post-treatment rain has flushed the roof. If your home is fully tank-supplied, mention it on the quote and we'll plan around it.
Do you re-paint or seal the roof?
Cleaning is a separate service from coating. We don't paint roofs, but we'll refer a coatings specialist if you want the roof recoated after cleaning.
A fixed price, no hidden fees.
Quick and simple. No pushy follow-ups, no hidden fees, no phone call unless you ask for one.