Soft wash and pressure washing for commercial and residential roofs across Sydney. Lichen, moss, and algae removal from Colorbond, terracotta, and flat roofs — WH&S compliant with gutters included.
A clean roof protects your building, extends the life of your roofing materials, and maintains the property's appearance and value. Lichen, algae, and moss are not just cosmetic problems — they trap moisture against roofing surfaces, accelerating corrosion on Colorbond metal and degrading the surface of terracotta and concrete tiles. Regular removal is one of the most cost-effective maintenance activities you can schedule for any commercial or residential property in Sydney.
Pro Clean Corp uses soft wash techniques for Colorbond metal roofing and terracotta tiles — a low-pressure method that applies biocidal cleaning solutions to kill biological growth at the root level without the high-pressure water that can dent metal, strip paint coatings, or crack tile glazing. For robust concrete tiles and flat commercial membrane roofing, pressure washing is used where appropriate. All work is preceded by a biological growth pre-treatment soak to loosen contamination before washing begins.
Every roof cleaning job includes gutter clearing — removing leaf matter, moss, dirt, and blockages from gutters and downpipes and checking flow before we leave. All staff hold current Working at Heights certification under the NSW WH&S framework. A safe work method statement is prepared for every job and we use appropriate fall arrest systems, harnesses, and elevated work platforms where required. An optional protective biocidal coating can be applied after cleaning to inhibit regrowth for 3–5 years.
Low-pressure biocidal cleaning for Colorbond metal and terracotta roofing — preserves paint coatings, warranties, and tile glazing.
Safe cleaning for EPDM, TPO, and bituminous membrane systems — drainage pathways cleared to prevent ponding and membrane damage.
All staff hold Working at Heights certification. SWMS prepared for every job. Fall arrest equipment, harnesses, and EWPs used as required.
Gutter clearing included as standard — leaf matter, moss, and blockages removed with downpipe flow checked before completion.
Free on-site assessment. Written quote within 24 hours.
Soft washing is a low-pressure cleaning method that relies on the chemical action of biocides and cleaners rather than high water pressure to remove biological growth. It is used on surfaces that could be damaged by high pressure — particularly Colorbond metal roofing (which can dent or have its paint coating damaged) and terracotta or glazed tiles (which can crack or have their glaze stripped). Soft wash kills lichen, algae, and moss at the root level without damaging the roofing material.
Yes. We clean Colorbond steel roofing using soft wash techniques and low-pressure rinsing that are compatible with BlueScope's Colorbond warranty requirements. High-pressure washing at close range can damage Colorbond paint coatings and may void the manufacturer's warranty — we specifically avoid this. Our biocidal treatments are safe for Zincalume and Colorbond substrates.
Yes. Gutter clearing is included as part of our standard roof cleaning service. Blocked gutters are a common consequence of organic growth and debris on roofs, and clearing them is essential to ensure proper stormwater drainage. We clear leaf matter, moss, dirt, and blockages from all gutters and downpipes and check for proper flow before completion.
Most commercial roofs in Sydney's environment benefit from cleaning every 2–3 years to prevent significant biological growth buildup. Buildings in tree-lined areas, near the coast, or in humid environments may require annual cleaning. Flat roofs with drainage systems should be inspected and cleared more frequently — we recommend a minimum of annual inspections for flat commercial roofs.
Yes. All Pro Clean Corp staff performing roof cleaning hold current Working at Heights certification under the NSW WH&S framework. We use appropriate fall arrest equipment, safety harnesses, roof anchor systems, and elevated work platforms (EWPs) where required. A safe work method statement (SWMS) is prepared for every roof cleaning job in compliance with SafeWork NSW regulations.
Yes. Lichen, moss, and algae trap moisture against roofing surfaces, accelerating corrosion on metal roofs and tile degradation on terracotta and concrete tiles. Regular removal of biological growth is one of the most cost-effective maintenance activities for extending roof life and preserving manufacturer warranties. For Colorbond roofing in particular, regular cleaning and inspection can add years of serviceable life.
Yes. After cleaning, we offer the optional application of a biocidal protective coating that inhibits the regrowth of lichen, algae, and moss for an extended period — typically 3–5 years depending on the roof type and local environment. This extends the interval between cleanings and provides additional protection for your roofing investment. We can advise on the most suitable coating for your roof type.
Yes. Flat commercial roofs require specific care to avoid damaging membrane systems. We use low-pressure washing and appropriate cleaning chemistry to remove debris, biological growth, and contamination from EPDM, TPO, and bituminous membrane roofing without compromising the waterproofing layer. Drainage pathways and outlets are cleared to prevent ponding and the structural damage that follows.
Soft wash and pressure washing for Colorbond, terracotta, and flat commercial roofs across Sydney. WH&S compliant, gutters included, written quote within 24 hours.