Bundle gutter guard installation with roof cleaning for great savings – request a quote now
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
Moss, mould and lichen commonly develop on roofs and exterior surfaces, particularly in damp or shaded environments. While this growth may initially appear cosmetic, it can contribute to moisture retention and gradual deterioration of materials if left untreated. Illawarra Maintenance Group provides targeted treatment services to help manage this organic growth and protect exterior surfaces.
Our process begins with an assessment of the affected areas to understand the type of growth present and the condition of the surface beneath it. Different surfaces and growth types require different treatment approaches, which is why a one-size-fits-all method is avoided.
Treatments are applied with care to control growth while minimising unnecessary impact on surrounding areas. Rather than aggressive removal methods that may damage surfaces, our approach focuses on controlling and breaking down growth over time. This can help reduce moisture retention and limit the conditions that allow moss, mould and lichen to thrive.
Moss, mould and lichen treatment is often combined with roof washing or gutter cleaning services as part of a broader exterior maintenance plan. Treating growth after cleaning can help slow its return and improve the overall condition of the property.
As with all our services, we provide honest advice. If treatment is unlikely to deliver meaningful benefit for your property, we will advise accordingly. Our aim is to offer practical maintenance solutions that support long-term care rather than unnecessary intervention.
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.
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.
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.
We disconnect or divert downpipes that feed a tank before treating, and wet down and rinse nearby plants. Pets should be kept inside while we work.
Yes, and we recommend it. Treating after a roof wash slows regrowth, and clearing the gutters afterwards stops dead growth from blocking them.
Secure your home against the elements with our proven gutter and maintenance solutions. Get in touch now for a quote.