KILL THE MOSS AND LET THE WEATHER DO THE REST.
Moss, lichen and black mould take over Perth roofs in the shaded, damp spots — holding moisture, lifting ridge capping and shortening the roof's life. This isn't a wash or a high-pressure blast: we apply a biocide that kills the growth at the root, then let the weather lift it away over the following seasons.
ONE TREATMENT. YEARS OF CLEAN.
This is one Perth roof. We applied the biocide once, in May 2022 — no scrubbing, no pressure — then let the weather do the rest. Here's the same roof over the next three-and-a-half years.
Heavy moss and lichen across the tiles. We spray on the biocide — no scrubbing, no pressure — and leave the rest to the weather.
A winter of rain and wind has lifted most of the dead growth away. No second visit, no washing — just the treatment doing its job.
Still clean. The biocide kept reactivating with every rain, staying ahead of regrowth long after the single application.
WHY A BIOCIDE BEATS A BLAST.
A biocide treatment works nothing like a wash or a high-pressure clean. Instead of scrubbing or blasting the growth off — which risks the tiles and stops working the moment it’s done — we spray on a treatment that kills the moss, lichen and mould, soaks into the surface, and lets the weather clear it over time. Less time on your roof, protection that keeps working, and a result we guarantee.
We're not a franchise counting jobs against a national target. We're local, properly insured, and we run serious professional equipment — not the hardware-store special. When we say we'll be there, we're there.
EVERYONE'S GOT FIVE STARS. HERE'S WHY OURS ARE REAL.
★★★★★5.0 · 59 reviewsEvery pressure cleaner on the internet has a wall of five-star reviews — you've noticed that, right? So instead of just telling you we're great, here's what our customers actually say.
"I sent David photos, he came out and quoted on the spot. Communication was prompt and professional the whole way through. I couldn’t be happier — the pavers look fantastic. Highly recommended!"
"Absolute pleasure to deal with. Madi was very responsive and had David out to quote in no time — I even got a tracker to see how far away he was. Fair prices and brilliant attention to detail on my liquid limestone. 5-star job."
"David did a fantastic job cleaning up my limestone and driveway for the sale of my place. I’ve no doubt it put a few thousand dollars on the sale price. I wouldn’t use anyone else."
"Fantastic outcome — the patio looks amazing! Really recommend All West."
"I barely recognised my courtyards after David’s clean and seal. My older front pavers never looked this good, even when new 22 years ago. Professional, on time and left everything spotless."
"Prompt, professional and thorough. Dave did an excellent job on our outdoor paving — respectful, courteous and accommodating. An all-round positive experience."
THE QUESTIONS WE ACTUALLY GET ASKED.
HOW IT WORKS. THEN NATURE TAKES OVER.
Four steps to a moss-free roof — we do the first three, then the weather does the heavy lifting.
GET IN TOUCH
Fill in the form or give us a call. A photo of the roof helps us quote faster.
WE ASSESS & QUOTE
We check the roof, its pitch and how much growth it’s carrying, then send a straight, no-obligation price.
WE APPLY THE BIOCIDE
We spray the biocide across the roof at low pressure — no scrubbing, minimal time on your tiles. Then we’re off.
THE WEATHER DOES THE REST
Over the next 1–2 winters, rain and wind clear the dead growth away — backed by our 24-month, 95% removal guarantee.
SERVICE AREAFree quote, no obligation, and no pressure washer anywhere near your tiles. Just a biocide treatment that kills the moss and lets the weather clear it — backed by our 24-month, 95% removal guarantee.