Retaining Wall Cleaning Gold Coast
Restore the appearance of your garden walls and remove years of unsightly organic build-up.
Retaining walls are constantly exposed to moisture from the soil they hold back, making them a breeding ground for thick black mould and green algae. A professional clean doesn't just make your landscaping look new again—it prevents the organic growth from causing long-term structural staining and degradation to your stone, brick, or timber.
Are your garden walls covered in slippery algae or white calcium stains?
Because retaining walls are often shaded and damp, they quickly lose their original color to organic growth. Many homeowners try to blast these walls with high pressure, only to damage the mortar or splinter the timber. Furthermore, "efflorescence"—the white salty staining often seen on brick walls—requires more than just water to remove. You need a targeted approach that treats the specific type of staining without compromising the wall's integrity.
Specialized Cleaning for Every Wall Type
Different wall materials require different techniques. Whether you have natural sandstone, concrete sleepers, brick, or timber, we adjust our methods to suit. By using a combination of specialized cleaning solutions and the correct pressure, we ensure that the mould is killed at the root. This means your walls stay cleaner for significantly longer compared to a standard high-pressure rinse that only removes the surface layer.
Common wall types and the cleaning methods we use
Concrete Sleepers & Besser Blocks — We utilize high pressure cleaning to penetrate deep into the concrete pores, flushing out years of black mould and dirt.
Stone & Sandstone Walls — For porous natural stone, we apply Low Pressure Soft Washing. This safely dissolves organic growth and prevents the "pitting" or erosion caused by excessive water pressure.
Timber & Log Retaining Walls — We avoid high pressure to prevent splintering. Instead, we use a targeted soft wash treatment to kill algae at the root, restoring the wood's natural appearance.
Brick Walls with Efflorescence — For walls with white mineral salt build-up, we use specialized Stain Removal treatments to break down the calcium deposits that standard pressure cleaning cannot touch.
Retaining Wall Cleaning Pricing
Affordable restoration for your home’s landscaping and garden walls.
Pricing for retaining wall cleaning is based on the total surface area and the level of staining or calcium build-up present. Minimum service charge for pressure cleaning is $400. We provide instant online estimates so you can get a price for your project in under two minutes.
From $400
Frequently Asked Questions
Your frequently asked retaining wall cleaning questions
Will the cleaning chemicals kill my plants?
We take plant protection very seriously. We pre-wet all surrounding gardens and use highly diluted, biodegradable solutions. By rinsing the area thoroughly during and after the process, we ensure your landscaping remains healthy and unaffected.
Can you remove the white "salty" stains on my brick wall?
These stains are known as efflorescence. While standard pressure cleaning won't remove them, we use specialized stain removal treatments designed to break down these mineral deposits and restore the original look of your brickwork. Be warned, this will not stop the efflorescence from coming back, you need to solve the moisture problem behind the wall to ensure it won't return.
Is high pressure safe for my timber retaining wall?
We do not use high pressure on timber as it can "fur up" the wood and cause splintering. Instead, we use our Low Pressure Soft Washing method to chemically treat and kill the mould, followed by a gentle rinse that leaves the timber clean and undamaged.
Ready to see your garden walls look new again?
Get an instant estimate for your retaining wall cleaning needs — it takes under 2 minutes.
View our full range of Pressure Cleaning Gold Coast services
Professional window cleaning and pressure cleaning services across the Gold Coast. Owner-operated with over 15 years of experience.
Zen Window Cleaning
5 Burn Ct, Nerang QLD 4211
1800 517 402
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