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Soft Wash Mould Removal Anti-Fungal

Sandstone Cleaning Brisbane

Chemical restoration that brings stone back to life. No blasting, no damage.

Recent Restorations

See how we remove black mould and algae without harsh pressure.

Before and after sandstone path cleaning at a home in Brisbane
Before and after sandstone retaining wall cleaning at a home in Brisbane
Clean sandstone poolside paving in Indooroopilly showing dramatic before and after results
Before and after photo of retaining wall cleaning in Hendra, Brisbane, showing removal of dirt and grime for a fresh, clean finish
Sandstone retaining wall cleaning, The Gap Brisbane, September 2025, before and after
Before and after sandstone cleaning around pool area in Indooroopilly

Stop! Don't blast your sandstone.

Sandstone is a soft, porous sedimentary stone. If you attack it with a standard high-pressure nozzle, you will strip the surface ("etching"), leaving permanent wand marks and opening the pores to even more dirt.

At HiPressure, we use a Chemical Soft Wash process. We apply a specialized biocide that soaks into the stone and kills the black algae and mould at the root. We then gently rinse it away using volume, not force.

Our Safe Method:

  • Chemical Pre-Treat
  • Low Pressure Rinse
  • Kill Black Spot
  • Long Lasting Result
Before and after sandstone path clean, Indooroopilly

The Restoration Process

1

Identify

We assess the stone type (Himalayan, York, etc.) and check for drainage issues or fragile pointing.

2

Treat

We apply a chemical soft wash mix. This dwells on the surface, breaking down black spot lichen.

3

Cleanse

Using wide fan tips and low pressure, we gently rinse away the dead biological matter.

Neutralise

A final fresh water flush ensures your plants are safe and the stone is pH neutral.

Sandstone Restoration Costs

Pricing reflects the delicate nature of the work and chemical costs.

Sandstone Cleaning

Paths, Patios, Pool Surrounds & Walls

Starting From
$275 Inc GST
  • Anti-mould pre-treatment
  • Controlled pressure rinse
  • Black spot removal
  • Garden protection
  • Non-slip finish
  • Full site cleanup

*Price varies based on m² and soiling level.

Get Your Free Quote

Related services: retaining wall cleaning, concrete and paths, house washing.

Sandstone FAQs

Will pressure cleaning damage my sandstone? +

Yes, high pressure can ruin sandstone. That is why we do not use high pressure. We use a soft wash chemical process that kills the mould, allowing us to rinse it off gently without etching the stone.

Can you remove black spots (Lichen)? +

Yes. The black spots are actually alive (lichen). Our chemical treatment penetrates the root system to kill them. However, if they have been there for years, they may leave a faint "ghost" mark that fades over time.

Is it safe for my plants? +

We take plant safety seriously. We saturate the soil with fresh water before and after the chemical application to dilute any runoff, ensuring your garden stays healthy.

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