Roof Cleaning in Lesmurdie
Moss, lichen and grime stripped from your roof, a fresh look and a longer-lasting roof. Serving Lesmurdie 6076 and the eastern hills suburbs.
Fully licensed & accredited — Builders Registration BC105819 · Painters Registration PC102072 · Patent ID AU-A-2020100623
Blasting a roof removes what you can see and leaves what matters. Lichen roots into the surface and grows back through anything applied over it. On Lesmurdie roofs we treat first, wait for it to die, then clean properly.
Why Lesmurdie roofs behave the way they do
Lesmurdie was born as a rural retreat. In 1897 the politician and journalist Archibald Sanderson began buying land here from the Canning Jarrah Timber Company to build a country property. Grow fruit and that origin still shapes the suburb: former logged jarrah forest, turned into orchards and leafy large-lot homes on the Darling Scarp. For an inspection, the former-forest setting brings big established trees, old stumps and strong forest-edge termite pressure, so the timber pest inspection earns its place. That is the pattern. The defining physical feature is the escarpment edge, Lesmurdie Falls drops off the scarp here and the sites reflect it. Many blocks are steep, so retaining walls, cut-and-fill platforms and stormwater and down-slope drainage over laterite. Rock are central to the inspection and getting water safely away from and around a house on a scarp slope is not trivial. As with all the hills suburbs, most forested blocks carry a Bushfire Attack Level rating worth checking against the house and many properties run on septic systems rather than deep sewer. The stock runs from early orchard-and-retreat homes through mid-century to large modern hills houses, generally leafy and higher-value. Being up in the hills, coastal salt and delignification are not the concern; Lesmurdie's report is about steep scarp-edge sites, forest, fire and on-site drainage and effluent.Roof Cleaning in Lesmurdie: the short version
Cleaning a roof properly is mostly waiting. The treatment has to kill the growth before anything is washed, or it regrows from what remains. Detail sits on our roof cleaning page.
What that means for roof cleaning in Lesmurdie
The hills run cooler and wetter with a shorter drying window, so growth has more of the year to work with and treatment needs a genuinely dry stretch to be effective.
Steep pitches and decorative capping mean these roofs are worked from above rather than walked, which takes longer and protects tiles that cannot easily be replaced.
We assess metalwork while cleaning here, because deposit and corrosion tend to appear on the same roofs.
Lesmurdie roofs: symptom and fix
| What you are seeing | What it usually means | What it needs |
|---|---|---|
| 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 |
| Roof clean but gutters full of grit | Surface breaking down | Assess whether coating is due |
| Dark vertical streaks | Algae, spreading with each rainfall | Treat and wash |
Guide only. Every roof differs, which is why we look before quoting.
More roofing in Lesmurdie
01Roof Restoration in Lesmurdie
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Roof Restoration in Lesmurdie
Learn moreA roof restoration renews a tired but sound Lesmurdie 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 Hacketts Gully. 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 Lesmurdie 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 Lesmurdie →
02Roof Repairs in Lesmurdie
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Roof Repairs in Lesmurdie
Learn moreMost Lesmurdie 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 Bickley. 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 Lesmurdie
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Roof Replacement in Lesmurdie
Learn moreWhen a Lesmurdie 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 Walliston, 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 Lesmurdie
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Roof Inspection in Lesmurdie
Learn moreA roof inspection is the cheapest way to know exactly what your Lesmurdie 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 Carmel, 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 Lesmurdie
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Roof Carpentry in Lesmurdie
Learn moreRoof carpentry is the structural timber under your tiles — the rafters, battens and trusses that hold everything up. On Lesmurdie 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 Piesse Brook 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 Lesmurdie
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Storm Damage Repair in Lesmurdie
Learn moreWhen a storm hits a Lesmurdie 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 Hacketts Gully. 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 Lesmurdie →See all roofing services in Lesmurdie, or read more about our storm damage repair service across Perth.
Signs a Lesmurdie roof is due for cleaning
- 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
- Tiles staying dark for hours after rain
- Debris sitting on the surface rather than washing off
Local conditions in Lesmurdie
On the escarpment edge (Lesmurdie Falls), steep scarp-edge sites, dramatic slope, retaining, cut-and-fill, down-slope and stormwater drainage over rock/laterite.
Land bought from the Canning Jarrah Timber Company, former logged jarrah forest; big trees, stumps and forest-edge termite pressure.
Forested scarp, BAL bushfire requirements; ember/access.
We cover the whole of the City of Kalamunda. 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 Lesmurdie
Established 1897 by Archibald Sanderson (politician/journalist), buying land from the Canning Jarrah Timber Company to build a rural retreat & fruit-growing property; named after his family Fruit-growing/orchard origins; rural-retreat character; treed large lots None of that decides what your roof needs. It does tell us what to expect before we get the ladder out in Lesmurdie.
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 Lesmurdie
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.
What about the neighbour's roof?
Spores travel, so a heavily colonised roof next door contributes to yours continuously. You cannot control that, which is why your own conditions matter more.
How often should a roof be cleaned?
It depends on aspect, canopy and whether the surface is sealed. An open aspect coated roof may go many years. Aged unsealed tile under heavy trees on a shaded side needs it far sooner.
Will cleaning damage my tiles?
Done at appropriate pressure with proper treatment, no. Done aggressively on aged concrete, yes and the damage is permanent. It strips the surface and leaves the roof more hospitable to growth than before.
Do you work throughout Lesmurdie?
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.
Checking the quote before you sign
Compare scopes rather than totals. A cheaper quote is frequently a different job and the gap is usually treatment time, film build, or repairs excluded and raised later. Ask for the product name, coat count and what happens if more damage is found once work starts.
Getting a quote in Lesmurdie
Call 0421 768 842 for an inspection. We photograph what is actually there, price the work that is genuinely required and tell you plainly when a Lesmurdie roof needs less than you were expecting. That happens more often than people assume.

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 →
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