Bundle gutter guard installation with roof cleaning for great savings – request a quote now
BEFORE · Build-up across the existing metal roof
AFTER · The same roof, refreshed
Owners, Illawarra Maintenance Group
BEFORE
AFTER
Owners, Illawarra Maintenance Group
5.0 on GoogleFrom 62 local reviews
Fully licensed and insured$20 million public liability, full workers cover
15 and 20-year warrantiesProduct and workmanship, on gutter guard
Local and family ownedMathew and Kasey, based in Shellharbour
BEFORE · CLOSE-UP
Build-up visible in the roof’s corrugations.
AFTER · CLOSE-UP
The cleaned sheets and capping after the wash.
Original project photography. Before and after views were taken from different positions and in different light.
Over time, roofs naturally accumulate dirt, grime, mould, moss and lichen. While this build-up may seem like a cosmetic issue at first, it can also contribute to moisture retention and gradual deterioration of roofing materials if left unchecked. Illawarra Maintenance Group provides professional roof washing services that focus on effective cleaning without unnecessary damage.
Our approach begins with understanding the roof itself. Roofing materials vary, and what works for one surface may not be appropriate for another. High-pressure cleaning, when used incorrectly, can dislodge tiles, strip protective coatings or force water into areas it should not go. That is why we assess each roof carefully before selecting the most suitable cleaning method.
The goal of our roof washing service is to remove surface build-up while preserving the integrity of the roof. By reducing moss, mould and lichen, we help limit moisture retention and improve the overall appearance of the property. This can be particularly beneficial prior to selling, repainting or undertaking other maintenance work.
Roof washing is often combined with other exterior services such as gutter cleaning or gutter guard installation, allowing us to address multiple maintenance needs in a single visit. This coordinated approach helps ensure gutters remain clear after cleaning and that debris removed from the roof does not create new blockages.
As with all our services, we operate with a focus on practical outcomes rather than unnecessary treatments. If roof washing is unlikely to provide meaningful benefit for your specific situation, we will advise accordingly. Our priority is to deliver solutions that genuinely suit the condition of your roof and the needs of your property.
Explore our Wombarra roof-washing project for before-and-after views, or see our ongoing roof and gutter care at Kiama Terrace Houses.
Areas we cover
We have pages for these areas, with photos from local jobs and details on the roofs and surfaces we clean in each one.
Peace of mind
$20 million public liability and full workers compensation cover, so you and your property are protected while we work.
A 15-year product warranty and 20-year workmanship guarantee on every gutter guard we install. If our work lets you down, we come back and fix it.
All of our gutter guard products are CSIRO tested and approved to all relevant Australian standards.
We get on the roof, measure properly and give you a free written quote. No guesswork, no pressure.
Mathew and Kasey Chapman run every job from Shellharbour. You deal with the owners, not a call centre.
Both, depending on the roof. Soft washing applies a cleaning solution at low pressure and suits coated metal, older tiles, and anything fragile. Controlled pressure washing suits sound concrete tiles with heavy build-up. We choose after looking at the roof, so it gets clean without being damaged.
Not when it’s done properly. Damage comes from blasting at high pressure, which can crack tiles, strip coatings and force water under flashings. We keep pressure matched to the surface and use a soft wash where pressure isn’t safe.
A sodium hypochlorite-based wash to kill mould and organic staining, followed where needed by a biocide that keeps working on moss and lichen after we leave.
We disconnect or divert downpipes that feed a tank before washing, and wet down and rinse nearby plants. Pets should be kept inside while we work.
Usually several years. Roofs under trees or in damp, shaded spots grow back faster. A follow-up biocide treatment every couple of years slows regrowth.
Yes. A clean roof lifts street appeal in listing photos, and painters and roof restorers need a clean surface before coating. Our drone before-and-after photos are handy for your agent.
Over time, yes. Lichen and moss hold moisture against the roof, which speeds up wear on tiles, coatings and mortar, and can block gutters as it breaks off.
Mould and staining clear on the day. Lichen dies quickly but takes several weeks to a few months to fully break down and wash away with rain.
It can, because the conditions that grew it are still there. Treatment slows regrowth a lot, and a light re-treatment every two to three years keeps it under control.
Yes, and we recommend it. Roof washing sends debris into the gutters, so we clean them out afterwards. It’s also the ideal time to fit gutter guard.
Secure your home against the elements with our proven gutter and maintenance solutions. Get in touch now for a quote.