Roof Cleaning
Tile, Colorbond, terracotta.
Moss, lichen and algae on your roof trap moisture and accelerate tile and coating deterioration. Our roof cleaning process kills organic growth, restores appearance and extends the life of your roof.
A dirty roof is more than an aesthetic problem. Moss and lichen have root systems — called rhizines — that physically penetrate tile and grout surfaces. As they grow, they lift tiles, crack grout and hold moisture against the surface. Over time, this accelerates tile pitting, grout erosion and in severe cases, structural water ingress.
Lichen in particular is extremely difficult to remove once established. It bonds chemically to porous surfaces and can only be effectively treated with a biocide that kills the organism at the root. Physical removal alone — scraping or pressure washing — damages the tile surface and leaves root fragments that regrow rapidly.
Our process applies a professional biocide solution using extension lances. The solution dwells on the roof, killing the organic matter. Dead moss and lichen then naturally wash off over the following rainfall events, or we rinse after the appropriate dwell time. The result is a clean roof with biology eliminated at the root — not just moved around.
What we work on.
How we do it.
We photograph the entire roof from multiple angles before starting. This gives you a baseline record and helps us identify areas of heavy organic build-up that need extra attention.
Downpipe outlets are covered to prevent chemical runoff entering stormwater systems during treatment.
Our professional biocide solution is applied at low pressure using extension lances. We work methodically across every pitch and valley, ensuring full coverage including ridge capping and flashings.
The biocide is left to work — longer for heavy infestations. This kills moss, lichen and algae at the root level, not just at the surface.
We photograph the roof after cleaning and send you a complete before/during report. We also note any structural concerns — cracked tiles, failed ridge capping, gutter damage — so you can address them.
The result.
The difference.
We use a biocide that kills the biology. Physical removal alone leaves root systems that regrow within months.
Every job gets a before and during photo report. You have a full record of what was done.
Fully insured for your peace of mind.
We photograph and flag any cracked tiles, failed pointing or gutter damage we observe.
Common questions.
Can't find your answer? Call us — we'll give you a straight answer.
📞 Call nowGet a free quote.
Send a couple of photos and we'll send back a fixed price — same day.