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Like any exterior building surface, your roof, paintwork, render, cladding, gutters and other exposed surfaces require ongoing maintenance. Exposure to the Australian climate can result in the gradual accumulation of mould, fungal growth, dirt, airborne contaminants, organic matter and, particularly in coastal areas, salt deposits.

For COLORBOND® steel specifically, BlueScope recommends establishing a regular cleaning routine. Areas that are not naturally washed by rain should be cleaned at least every six months, with cleaning recommended every three months in coastal environments where marine salt spray is prevalent. Regular washing helps maintain the appearance and enhance the service life of the coated surface.

Where fungal growth is present on COLORBOND® roofing, BlueScope Technical Bulletin TB-27 recommends cleaning using a 2% sodium hypochlorite solution, allowing approximately 3–5 minutes contact time, followed by a thorough rinse with copious amounts of fresh potable water. BlueScope cautions that stronger concentrations or excessive contact times may adversely affect the long-term performance of the product.

Professional Exterior Maintenance Matters

At Coastal Fresh Cleaning, we strongly recommend using an appropriately experienced professional when carrying out services or exterior work on your property, particularly roof cleaning, exterior washing, painting, rendering, roofing, renovations and ongoing property maintenance.

Exterior surfaces can have specific manufacturer requirements. Incorrect chemicals, excessive chemical concentrations, excessive pressure, unsuitable equipment or improper techniques can potentially damage paint systems, protective coatings, roofing materials, render, sealants and surrounding surfaces.

The same principle applies to painting, rendering, roofing and renovation work. These services should be carried out by suitably experienced professionals who understand the products and surfaces they are working with and follow the relevant manufacturer’s recommendations.

Regular professional maintenance can help control mould, algae, fungal growth, dirt, salt and environmental contamination before excessive build-up occurs. It can also help identify failed coatings, deteriorated paint, corrosion, damaged render, failing sealants and other conditions that may require repair or restoration rather than cleaning.

Cleaning Is Maintenance, Not Restoration

Cleaning cannot reverse normal ageing, weathering, oxidation, fading, coating deterioration, corrosion, failed paint or render, or pre-existing damage.

Where a surface has deteriorated because of age, exposure, lack of maintenance, an existing defect or failure of the underlying coating or material, the condition may be considered normal wear, weathering or a maintenance/repair issue, depending on the surface, manufacturer and circumstances. It should not automatically be considered damage caused by the cleaning process.

Maintaining your exterior surfaces regularly and using experienced professionals helps protect your property, preserve its appearance and reduce the likelihood of avoidable deterioration.

Protect your property. Maintain it regularly. Use professionals who understand the surfaces they are working with.

Coastal Fresh Cleaning
Exterior Cleaning Specialists – Sunshine Coast

During quote visits, we regularly speak with property owners who have experienced slips, falls, injuries or property damage after attempting exterior cleaning themselves. What begins as an attempt to save money can have consequences far greater than the cost of professional cleaning.

The risk isn’t limited to the person doing the work. Family members, friends and others helping or moving around the property can also be exposed to slippery surfaces, ladders, hoses, cleaning solutions, falling objects and high-pressure equipment.

Roof and exterior cleaning can involve working at height, wet surfaces, specialised equipment and cleaning solutions. Before attempting it yourself, consider not only your own safety, but the safety of everyone around you.

Protect yourself. Protect your family. Protect your property. Leave high-risk exterior cleaning to experienced professionals.