Roof cleaning in the Sutherland Shire
Updated October 2026
If your roof has gone dark, patchy or green, it is not just dirt. Moss, lichen and algae hold moisture against the tiles, break down coatings and slowly shorten the life of the roof. Roof cleaning in the Sutherland Shire restores the look of the house in a day and, more importantly, stops that growth doing structural damage.
We are a referral service, not a cleaning company. Tell us about the roof and we connect you with one of the experienced, insured local roofers we work with, who will quote the job free.
What professional roof cleaning involves
- A walk-over inspection first, because pressure cleaning a roof with cracked tiles or failed pointing pushes water straight into the ceiling
- High-pressure cleaning with roof-specific equipment, worked from ridge down so water sheds the way the roof is designed to
- Treatment for moss and lichen so the growth dies at the root rather than returning in a season
- Gutters and downpipes cleared of the sludge the clean washes down
Asbestos cement (fibro) roofs are never pressure cleaned. If a roof might be asbestos cement, the roofer will stop and recommend testing, and any work on it goes to a licensed asbestos removalist.
Metal roofs are cleaned at lower pressure with the right chemicals, because high pressure can damage older coatings on Colorbond and galvanised steel.
Why Shire roofs grow lichen and moss
The Shire is a humid, coastal pocket backed by bushland, and roofs here show it. Salt air near Cronulla and Kurnell erodes tile surfaces, which gives lichen something to grip. Streets backing onto bush around Engadine and Menai collect leaf litter and shade that keep roofs damp. And the southern side of almost every roof in the Shire gets less sun, which is why lichen nearly always shows up there first. Much of the local housing stock dates from the 60s to the 80s, and a concrete tile that lost its original surface decades ago is a sponge for growth.
What roof cleaning costs
Guide pricing only. A pressure-clean-only visit on an average single-storey home typically runs $400 to $900, with larger, steeper or two-storey roofs sitting higher, often up to around $1,500. Moss treatment, gutter clearing and minor repairs add to that. If you are cleaning the roof as step one of repainting or restoring it, get the whole package quoted at once, because it is cheaper than booking each trade separately. The numbers are in our roof restoration cost guide.
A warning about cleaning old roofs
Cleaning strips everything off the tile, including whatever remained of the original coating. A badly weathered roof can look blotchy after a clean, which is why roofers often recommend cleaning as preparation for roof painting rather than as a stand-alone cosmetic fix on an old roof. A good local roofer will tell you honestly which situation yours is before you spend the money.
Safety and licensing
A wet tile roof is one of the most dangerous places a person can stand. The roofers we work with use harnesses and edge protection and carry insurance for working at heights, which is exactly why this is not a job for a homeowner with a ladder and a pressure washer. Cleaning on its own usually sits under the NSW $5,000 licensed-contractor threshold, but once it is bundled with repairs or coating, the whole job generally needs a licensed contractor, and the roofers we work with are licensed where the work requires it.
Related services: roof painting, roof repointing and gutter replacement.
Frequently asked questions
How often should a Shire roof be cleaned?
Most local roofs benefit from a clean every 3 to 5 years. Homes near the beach or under heavy tree cover may need it more often, because salt and shade speed up regrowth.
Will pressure cleaning damage my tiles?
Not when it is done with the right equipment and technique on a sound roof. The risk comes from cleaning over cracked tiles or failed pointing, which is why a proper inspection comes first.
Does roof cleaning get rid of lichen permanently?
Cleaning removes it, and a biocide treatment slows it coming back, but nothing stops regrowth forever on a bare, porous tile. Sealing or coating the roof after cleaning is what keeps lichen away long term.
Can I clean the roof myself?
We would not recommend it. Wet tiles are treacherous, domestic pressure washers drive water under tiles, and a fall from a single-storey roof is life-changing. The quote for a professional clean is small against that risk.