Roof Cleaning in Subiaco
Moss, lichen and grime stripped from your roof, a fresh look and a longer-lasting roof. Serving Subiaco 6008 and the inner suburbs.
Fully licensed & accredited — Builders Registration BC105819 · Painters Registration PC102072 · Patent ID AU-A-2020100623
Three different organisms grow on Perth roofs and only one washes off. Moss sits on the surface, algae streaks down it and lichen bonds chemically into aged tile. Powerdrive treats growth so it dies, then cleans at a pressure matched to the tile. Free inspection across Subiaco.
Why Subiaco roofs behave the way they do
Subiaco is one of the most heavily heritage-listed local government areas in the state: 928 places are listed, thirty of them on the State Register. Whole precincts have been listed collectively, the Park Street Heritage Area alone added 109 properties. Check the heritage status of the address before anything else With listing at that density, the chance a Subiaco property carries some form of heritage status is substantial. It may be listed as part of a precinct rather than individually, which owners frequently do not realise. Listing constrains what can be altered and requires repairs in materials compatible with the original construction. Establishing the status of the specific address and what it actually permits, should come before any renovation planning. The character stock is late-Victorian and Federation: solid brick without cavity or damp-proof course, timber floors on stumps, original iron or tile roofs. Every time. So rising damp, subfloor condition and the genuine cost of heritage-compatible repair are the recurring findings. One part of Subiaco is entirely different. Subi Centro was built on reclaimed industrial land around a sunken railway station, so there the housing is modern apartment strata on made ground. Engineered fill, a completely different inspection and one where site history is a reasonable question. Major hospital and school precincts sit within and beside the suburb, bringing traffic, parking pressure and a substantial rental share to nearby streets. (A historical note that says something about the place: when Leederville, North Perth and Victoria Park were absorbed into the City of Perth, Subiaco held a referendum in 1935 and voted 73 per cent against.)Roof Cleaning in Subiaco: the short version
Aged concrete tile is porous once its surface has gone, which is what lets growth take hold. Cleaning addresses the symptom and sealing addresses the cause. More on our cleaning page.
What that means for roof cleaning in Subiaco
Glazed terracotta cleans up remarkably well after decades of neglect because the surface was never porous. Unglazed holds staining far more stubbornly and may benefit from a penetrating sealer rather than a coating.
Doing an entire complex at once is both cheaper per dwelling and more effective, since spores from an untreated roof recolonise a treated one next door.
We assess metalwork while cleaning here, because deposit and corrosion tend to appear on the same roofs.
Subiaco roofs: symptom and fix
| What you are seeing | What it usually means | What it needs |
|---|---|---|
| Dark vertical streaks | Algae, spreading with each rainfall | Treat and wash |
| Green cushions in the ridge joints | Moss holding water against mortar | Treat, clean, then re-point |
| Flat grey or sage crusty patches | Lichen bonded into the tile | Treat and wait, never blast |
| Dark patches back within two years | Growth was removed but never killed | Treat properly this time |
Guide only. Every roof differs, which is why we look before quoting.
More roofing in Subiaco
01Roof Restoration in Subiaco
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Roof Restoration in Subiaco
Learn moreA restoration on a Subiaco character home is really a careful renewal — the roofs are often original, the streets are leafy, and the houses deserve a considered hand. We treat the moss the shade encourages, clean back to sound tile, re-bed and re-point ridge caps loosened over the decades, replace the terracotta that's spalled, and finish in a colour that suits the house and the street. Done well it protects a lovely old roof for years; done carelessly it looks wrong on a home like this, and people notice.
View roof restoration in Subiaco →
02Roof Repairs in Subiaco
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Roof Repairs in Subiaco
Learn moreSubiaco is full of Federation and character homes, and their roofs fail in character ways — a cracked terracotta tile off a steep gable, perished pointing along an old ridge, tired flashing round a chimney that's finally let go. We work carefully on these older roofs, match the profiles where we can, and trace the leak back to where the water actually enters rather than sealing the stain inside. On a heritage street the repair has to look right as much as hold, and that's how we approach it.
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03Roof Replacement in Subiaco
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Roof Replacement in Subiaco
Learn moreWhen a Subiaco roof is genuinely past saving, a re-roof has to respect what the house is. We'll talk through keeping a terracotta look or moving to Colorbond for the weight, sort the old framing and flashings properly underneath, and mind any heritage considerations before we start. The result is a roof that fits one of Perth's most characterful suburbs and takes the house comfortably into its next chapter, rather than a modern lid slapped on an old cottage.
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04Roof Inspection in Subiaco
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Roof Inspection in Subiaco
Learn moreBuying a Subiaco character home means buying an older roof, and it pays to know exactly what that involves before you sign. We inspect on top and inside the roof space and look hard at the things these places hide — tired flashings, cracked terracotta, perished pointing, and the state of old jarrah framing — then give you a plain written report with photos. On a heritage home the roof is often the biggest unknown, and knowing beforehand puts you in a far better spot.
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05Roof Carpentry in Subiaco
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Roof Carpentry in Subiaco
Learn moreUnder a lot of Subiaco's older roofs is beautiful old jarrah framing that's quietly weathered a century and the odd slow leak. When a rafter's softened under a failed valley or a batten's given way, it needs someone who'll repair it properly rather than prop it and move on. We cut back to sound timber, splice or replace to match, and fix whatever let the water in above it, keeping the structure honest under a roof that's worth preserving.
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06Storm Damage Repair in Subiaco
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Storm Damage Repair in Subiaco
Learn moreWhen a storm comes through, Subiaco's mature street trees and older roofs make for the usual trouble — a limb down, lifted tiles, a flashing peeled back and rain finding its way in. We get out to make the roof safe and watertight first, careful not to do further harm to an older structure, then assess the full extent, which after an impact means checking the framing under the damage too. If you're claiming, we document it all from the first visit.
View storm damage repair in Subiaco →See all roofing services in Subiaco, or read more about our storm damage repair service across Perth.
Signs a Subiaco roof is due for cleaning
- Tiles staying dark for hours after rain
- Debris sitting on the surface rather than washing off
- Moss coming down into the gutters
- A previously cleaned roof looking dark again within a few years
- Dark streaking running down the roof planes
Local conditions in Subiaco
With 928 heritage-listed places in the local government area and whole precincts listed collectively, the odds that a Subiaco property carries some heritage status are substantial. Listing constrains what may be altered and requires materials compatible with the original construction. The FIRST STEP HERE IS CHECKING THE HERITAGE STATUS OF THE SPECIFIC ADDRESS, including whether it falls within a listed precinct rather than being individually listed.
The character stock is late-Victorian and Federation, solid brick without cavity or damp-proof course, timber floors on stumps, original iron or tile roofs. Rising damp, subfloor condition and the cost of heritage-compatible repair are the recurring themes.
Subi Centro was built on RECLAIMED INDUSTRIAL LAND around a sunken railway station, so on that side of the suburb expect made ground, engineered fill and modern apartment Commercial Roofing Perth rather than character housing. Site history is a fair question there.
We cover the whole of the City of Subiaco. Around Subiaco that takes in Wembley, Shenton Park, Perth, Leederville, North Perth and Victoria Park. Short drives keep roof cleaning affordable on smaller jobs and most of ours are smaller jobs.
Materials and specification
If the roof is being cleaned ahead of coating, colour is worth thinking about at the same time. The AcraTex roofing colour range is published in full and darker tones conceal organic staining better under heavy canopy.
A little about Subiaco
Major hospitals, St John of God, King Edward Memorial Hospital for Women; Perth Modern School, the only academically selective school in WA; Rokeby Road and Hay Street commercial strips A referendum in 1935 on amalgamating the Municipality of Subiaco into the City of Perth was Defeated, with 73 PER Cent Voting Against, unlike Leederville, North Perth and Victoria Park, which were absorbed Subi Centro is a modern housing development built around the Sunken Subiaco railway station on Reclaimed Industrial Land near Wembley; older heritage properties lie towards Shenton Park None of that decides what your roof needs. It does tell us what to expect before we get the ladder out in Subiaco.
Recent work
What the work involves
- Clear up afterwards. A clean produces a considerable quantity of debris that goes straight into your gutters and downpipes. Flushing them is part of the job rather than an extra
- Identify what is actually growing. Algae streaks with the slope and is largely cosmetic. Moss holds water and roots in mortar joints. Lichen bonds chemically to the tile and resists physical removal entirely. They need different handling
- Treat, then wait. A biocide kills the organism including whatever is bonded into the surface. That takes days, not minutes and it is the stage that separates a lasting clean from a cosmetic one
Common questions about roof cleaning in Subiaco
Why does growth come back so quickly?
Usually because it was blasted rather than killed. Lichen in particular regrows from what remains bonded to the tile and a roughened surface gives spores more to hold onto.
Is it safe for my garden?
With proper protection and a thorough rinse down, yes. It is a fair question to ask any contractor before they start and isolating a rainwater tank is sensible.
Can I do it myself?
The chemistry is available. The height is the problem and mossy tile in the wet is genuinely treacherous. Ladder falls at home are common and serious.
Does cleaning fix leaks?
No. Cleaning is a surface operation. Leaks come from mortar, valleys and flashings and they should be traced separately.
Do you work throughout Subiaco?
Yes and the surrounding suburbs. Ring 0421 768 842 and tell us your street. If we are not the right people for the job we will say so rather than quoting anyway.
Three questions worth asking first
Ask what happens if the scope changes. On older Subiaco roofs things become visible once work starts and that is normal. What is not normal is discovering the variation on the invoice. It should be photographed, priced and discussed before anybody acts on it.
Getting a quote in Subiaco
Book an inspection on 0421 768 842. No charge, no pressure and a written quote you can put beside anybody else's. If roof cleaning is not what your Subiaco roof needs, we will say so and explain what does.
Dulux AcraTex accredited applicators
Powerdrive Roofing is an accredited applicator for the Dulux AcraTex roof restoration system, so your coating carries the manufacturer’s product warranty alongside our own 10-year workmanship warranty. How the Dulux AcraTex warranty works →
What Perth homeowners say
There are 206 reviews on our Google listing. Photographs of finished work sit alongside them, which is more useful than anything we could write here.
Request a free inspection
Tell us about the roof and we will come and look at it. Free inspection, written quote, no obligation.
Need your roof sorted? Let's talk.
Tell us about your roof and the problem, we'll tell you the likely cause and what it'll take to fix.