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Render vs Raw Brick: Why the Cleaning Approach Is Completely Different

Acrylic render, cement render and bagged brick all need their own cleaning method — using acid here will end badly.

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Illustrative image (not a Spotless job): Render vs Raw Brick: Why the Cleaning Approach Is Completely Different
Illustrative image — not a photo of a Spotless job.

This Brick Cleaning article is written for Melbourne owners and managers who need more than a quick blast. Brick Cleaning jobs in our city require a surface diagnosis before any cleaning starts.

In Melbourne, everything from growth corridor new-build mortar smear to inner-suburb heritage brick has its own cleaning risk profile. The right method, chemistry and pressure keep the surface safe and the result lasting.

Render is paint-coated

Most modern render finishes are sealed with acrylic. Acid attacks the binder and dulls colour permanently. Soft wash is mandatory.

Raw brick wants different chemistry

Mineral surfaces tolerate dilute acid well. Acrylic surfaces do not. Always identify the substrate first.

Mixed walls need zoned cleaning

Many homes mix render at the base with brick above. Each zone gets its own treatment plan.

On the job

  • Understand why render is paint-coated matters before you choose a cleaner.
  • Understand why raw brick wants different chemistry matters before you choose a cleaner.
  • Understand why mixed walls need zoned cleaning matters before you choose a cleaner.

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