Professional Roof Cleaning For Every Brisbane Roof Type

Every roof cleaning job begins with a ground-level and on-roof inspection to assess the roof material, pitch, condition, and the type of growth or staining present. We photograph problem areas before we start. The clean itself covers all roof surfaces including ridge capping, hip tiles, valleys, and flashings. We clear debris from valleys and around penetrations (vents, skylights, antenna mounts) as part of the job. Gutters are flushed after the clean to remove any wash runoff and debris. You get a written summary of roof condition and before-and-after photos.

We clean every roof type found across Brisbane — Colorbond and Zincalume steel, concrete tiles (flat and profile), terracotta tiles (glazed and unglazed), cement-fibre sheeting, and slate. Each material dictates which cleaning method and chemical combination we use. Colorbond and terracotta get soft washed exclusively. Concrete tiles can be pressure washed for heavy buildup or soft washed for routine maintenance. Older cement-fibre roofs require low-pressure methods and careful handling due to potential asbestos content in pre-1990 sheeting — we’ll advise you if testing is recommended before we proceed.

After completing our safety setup and roof inspection, we select the appropriate cleaning method based on roof type and condition. Soft washing applies surfactant solutions at low pressure for coated and delicate surfaces. Pressure washing uses 2,500–3,000 PSI with rotary surface cleaners for heavy buildup on concrete tiles. Biocide treatment applies a long-lasting preventative solution that kills moss, lichen, and algae at the root and continues working for months after application. Many roofs benefit from a combination — for example, a pressure wash to remove heavy moss followed by a biocide treatment to prevent regrowth. We always work from the ridge down.

Brisbane’s subtropical climate is the number one reason roofs here deteriorate faster than in drier parts of Australia. Warm temperatures and high humidity create ideal conditions for moss, lichen, and algae to colonise roof surfaces year-round. North-facing roof planes cop intense UV that degrades coatings, while south-facing planes stay damp and become biological growth hotspots. Summer storm season dumps debris into valleys and against flashings, trapping moisture and accelerating growth. Left unchecked, moss lifts tile edges, lichen etches into concrete, and algae holds moisture against steel — all of which shorten your roof’s lifespan and can void manufacturer warranties.