Metal & COLORBOND® Roof Cleaning in Brisbane

Yes, when the right method is used. COLORBOND® has a baked-on paint system that high pressure will scour or dull. A soft wash using a cleaning solution formulated for coated steel lifts dirt, salt and organic growth without damaging the finish. Confirming the method before the job starts is part of the free assessment.

It makes sense to do both in the same visit. Metal gutters, box gutters and flashings can accumulate the same lichen and debris as the roof, and clearing them while the crew is already on site means the whole system is sorted at once. Just let us know what you would like included when you enquire.

Lichen and mould on coated steel are treated with a low-pressure soft wash and a biodegradable solution that kills the growth and lifts it from the surface without abrasion. Scrubbing or high-pressure blasting can break the seal on the paint system, so neither is used on COLORBOND®.

Soft washing is the standard method for COLORBOND® and other coated metal roofs. A chemical solution does the cleaning work at low pressure, so the coating is not scoured or stripped. High pressure is only ever considered on bare, uncoated metal where a slower chemical treatment is not practical, and only after the roof condition is confirmed on site.

The cleaning solutions used on metal and COLORBOND® roofs are biodegradable and formulated for roof surfaces. Run-off is managed throughout the job, rainwater tanks are isolated on request, and care is taken around gardens and plants.

The main factors are the roof size, pitch, the type of metal and coating, how much lichen, oxidation or salt build-up is present, and how accessible the roof is. A flat rate over the phone is not reliable for a metal roof because those variables change the work involved. After a free on-site assessment you get a clear, upfront quote.

Using the wrong method or harsh chemicals can void a COLORBOND® warranty. The BlueScope guidelines recommend low-pressure washing and solutions that are safe for coated steel. A professional soft wash carried out with the right products and pressure is consistent with those recommendations. If you have a specific warranty document, let us know and we can discuss the approach with you.

Cleaning a metal roof carries real risks. Working at height on a slick, often steep surface is where falls happen, and the wrong pressure or product can strip the coating and damage a roof that would otherwise last decades. A professional job is carried out with proper fall protection, the right chemicals and a method that will not shorten the roof's life.

Cleaning is usually the right first step when the issue is surface contamination: lichen, algae, dirt, salt residue or a chalky oxidation layer on an otherwise sound coating. Repainting is more relevant when the paint has faded badly, is peeling, or has failed in patches. A free assessment will give you a clear picture of which applies to your roof.