Roof Cleaning in Shelley
Moss, lichen and grime stripped from your roof, a fresh look and a longer-lasting roof. Serving Shelley 6148 and the southern suburbs.
Fully licensed & accredited — Builders Registration BC105819 · Painters Registration PC102072 · Patent ID AU-A-2020100623
Organic growth keeps a roof wet and a roof that stays wet degrades faster than one that dries. Cleaning is not cosmetic on a Shelley property, it is what stops moisture sitting against mortar and metalwork.
Why Shelley roofs behave the way they do
Shelley has a ground history that every inspection here has to start with: much of the suburb is land reclaimed from the Canning River. It is avoidable. In a 1960 reclamation scheme, the Shire filled about a mile and a half of foreshore swamp to create eighty river-frontage lots and the Shelley Foreshore Reserve. That means large parts of Shelley, especially the sought-after riverside blocks, sit on made ground over former swamp. Made ground carries real risks: settlement, a high and sometimes variable water table and footing or slab movement as fill consolidates over decades. On the reclaimed foreshore lots, this is the single most important thing to understand. The Canning River frontage compounds it: the low riverside blocks carry a high water table, a flood context and subfloor damp, over reactive clay and organic ground beneath the fill. So drainage and how a home has coped with wet, settling ground, are central to a Shelley report. As a desirable riverside suburb, Shelley also sees knock-down-rebuild, so original 1960s homes sit beside new two-storey builds, two different inspections. On the new ones it is worth checking how the foundations were engineered for the reclaimed ground. Being a river suburb rather than a coastal one, salt-driven delignification is a low priority; in Shelley it is reclaimed land and the river that shape everything.Roof Cleaning in Shelley: the short version
What is growing determines what removes it. Algae, moss and lichen are three different problems and only one of them is superficial. Background on our service page.
What that means for roof cleaning in Shelley
Growth here is rooted, not superficial. Treating and waiting is not a preference in these streets, it is the difference between a clean that lasts and one that looks worse in three years.
Moss in a cracked ridge line is a symptom worth reading rather than simply removing.
Treatment needs a dry stretch to work and on these blocks that window is narrower than most people expect. We schedule around it rather than forcing it.
This is the part of Perth where lichen genuinely establishes rather than sits. River air keeps roofs damp into the morning and shaded planes barely dry at all through winter, which is exactly what it needs.
Shelley roofs: symptom and fix
| What you are seeing | What it usually means | What it needs |
|---|---|---|
| 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 |
| Tiles darken and stay dark after rain | Porous surface absorbing water | Clean, then seal and coat |
| Growth only on one elevation | Shaded plane holding moisture | Treat that side, consider the canopy |
Guide only. Every roof differs, which is why we look before quoting.
More roofing in Shelley
01Roof Restoration in Shelley
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Roof Restoration in Shelley
Learn moreA roof restoration renews a tired but sound Shelley roof for a fraction of replacement: we treat the moss and lichen, high-pressure clean, replace broken tiles, re-bed and re-point the ridge caps in a flexible compound, then seal and coat with a Dulux AcraTex membrane as accredited applicators.
It’s the right call when the tiles have decades left but the surface and pointing are gone — the same judgement we bring to nearby Ferndale. We’ll tell you honestly whether a restoration suits your roof or whether repairs or a re-roof make more sense, and the finished job carries both a manufacturer coating warranty and our 10-year workmanship warranty. Most Shelley homes take two to three days depending on the repairs needed before coating. As accredited applicators we prepare to the manufacturer’s specification, so the membrane actually holds — a coating only lasts if the surface beneath it was treated, cleaned and repaired properly first, which is exactly where a cheap spray-over fails within a couple of summers.
View roof restoration in Shelley →
02Roof Repairs in Shelley
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Roof Repairs in Shelley
Learn moreMost Shelley roof problems come down to a handful of failures: cracked or slipped tiles, perished ridge pointing, rusted valley irons and tired flashings. We trace the leak to its actual source — which is rarely under the ceiling stain — and fix the cause, whether that’s replacing matching tiles, re-bedding and re-pointing the ridge in a flexible compound, or renewing a corroded valley.
We’ll always tell you honestly when a roof is genuinely repairable versus when the repairs are mounting up and a restoration would serve you better, as it often does through nearby Riverton. Prompt repair matters: a single cracked tile left through a wet winter becomes soaked insulation, stained ceilings and, eventually, damaged roof timber. Every repair is backed by our workmanship warranty, and because we photograph what we find and talk you through it, you’ll understand exactly what was wrong and what we did about it rather than being handed a bill and a shrug.
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03Roof Replacement in Shelley
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Roof Replacement in Shelley
Learn moreWhen a Shelley roof reaches the end of its life — porous tiles, rusted-through valleys, or a roof that’s been patched one too many times — a full re-roof is often the honest answer. We strip the old covering, check and repair the timber and battens underneath, and install a new tile or Colorbond roof with fresh sarking, valleys and flashings throughout.
A tile-to-Colorbond conversion is popular here for its lighter weight, clean lines and colour range, and because the lighter roof changes the wind uplift we reassess the tie-down as part of every conversion. We’ll also be straight about whether you’ve genuinely reached replacement or whether a restoration, as we do through nearby Rossmoyne, would renew the roof for a fraction of the cost. Every re-roof is engineered and tied down to Australian Standards and backed by our 10-year workmanship warranty, and we handle the guttering, flashings and tie-down as one job so nothing is left for you to chase afterwards.
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04Roof Inspection in Shelley
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Roof Inspection in Shelley
Learn moreA roof inspection is the cheapest way to know exactly what your Shelley roof needs before you commit to anything — or before you buy. We get onto the roof and into the roof space, physically checking the tiles, pointing, valleys, flashings, gutters and the structural timber, then hand back a clear written report with photographs.
On older homes we test the timber for rot, termite damage and delignification; on newer ones we look for the builder-grade detailing faults that leak early. It’s the same thorough check we run through nearby Langford, and it’s what tells you whether a roof needs a minor repair, a restoration or something structural. If you’re buying a home, an inspection of the one part most people skip — the roof space — is money very well spent, and the written report gives you something concrete to put in front of an agent, a buyer or your insurer rather than a verbal all-clear.
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05Roof Carpentry in Shelley
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Roof Carpentry in Shelley
Learn moreRoof carpentry is the structural timber under your tiles — the rafters, battens and trusses that hold everything up. On Shelley homes we repair and rebuild that framing to standard: sistering weakened members, replacing rotted or termite-damaged timber, and reinstating trusses that have been cut for a skylight, duct or downlight.
We also test for delignification, the chemical breakdown that leaves roof timber looking sound but unable to hold a fixing — the same treatment we carry out through nearby Lynwood where the timber is worth saving rather than replacing. As registered builders we can certify structural carpentry, which a general handyman can’t, and we assess the whole load path while we’re in the roof space so a repair addresses the cause, not just the symptom. Where a member is load-bearing we prop it safely with acrow props and work to a structural engineer’s design before anything is cut — it’s the natural companion to our tie-down and structural-defect work.
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06Storm Damage Repair in Shelley
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Storm Damage Repair in Shelley
Learn moreWhen a storm hits a Shelley roof — lifting ridge caps, cracking tiles or dropping a limb through it — our first job is always to make the roof safe: tarp the opening, stop the water, and take the immediate danger out of it. Only then do we scope the permanent repair and deal with your insurer.
We document the damage thoroughly, separating genuine storm damage from pre-existing wear so the claim is properly supported, and we check the framing around any impact because a limb strike shock-loads more than the visible hole. It’s the same rapid response we bring to nearby Ferndale. Getting there quickly limits the internal damage — an hour of water ingress can mean ceilings and insulation you’ll otherwise be replacing later. We liaise with your insurer directly and hand back a documented, photographed scope, so the claim is straightforward and the repair holds up in the next blow rather than becoming the next emergency.
View storm damage repair in Shelley →See all roofing services in Shelley, or read more about our storm damage repair service across Perth.
Signs a Shelley roof is due for cleaning
- Moss coming down into the gutters
- A previously cleaned roof looking dark again within a few years
- Dark streaking running down the roof planes
- Green or grey patches on the shaded southern side
- Growth visible in the ridge and hip mortar joints
Local conditions in Shelley
Much of Shelley is RECLAIMED/FILLED former river swamp (1960). Made ground over old swamp = settlement risk, a high (and possibly variable) water table and slab/footing movement. On the reclaimed foreshore lots this is THE inspection issue.
Canning River frontage, high water table, flood context, subfloor damp; reactive clay/organic ground beneath fill.
Desirable riverside land value drives knock-down-rebuild, original 60s homes beside new two-storey builds; establish which + rebuild quality.
River, not coast, salt/delignification low priority.
We cover the whole of the City of Canning. Around Shelley that takes in Riverton and Rossmoyne. Short drives keep roof cleaning affordable on smaller jobs and most of ours are smaller jobs.
Materials and specification
Cleaning is preparation as much as it is a service. If the roof is heading for a coating, the same clean feeds straight into sealing and applying the Dulux AcraTex system under accreditation. Doing them together costs less than doing them separately.
A little about Shelley
Much OF Shelley IS Land Reclaimed From THE Canning River, 1960 Shire of Canning reclamation scheme: filled 1.5 miles of foreshore swamp between Corbel St & Beatrice Ave, resumed 36 acres, created 80 river-frontage lots (Zenith St-Fifth Ave) + Shelley Foreshore Reserve 1960s-onward + modern rebuilds; river-frontage prestige homes Named for shells found on the Canning River shore; part of Riverton until mid-1960s None of that decides what your roof needs. It does tell us what to expect before we get the ladder out in Shelley.
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 Shelley
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.
Should I clean or coat?
If the surface is sound and only dirty, clean. If the tiles are porous and darkening after rain, cleaning alone returns you to bare aged tile that starts weathering again immediately.
Do you work throughout Shelley?
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.
Before you commit to anybody
Ask what happens if the scope changes. On older Shelley 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 Shelley
Ring 0421 768 842 and we will look at the roof properly. You get photographs of whatever we find, a written itemised price and a straight answer about whether roof cleaning is the right work for your Shelley property or whether something smaller would serve you better.

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
Our Google profile carries 206 reviews from Perth homeowners. Worth reading before you commit to any roofer, ours included.
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