What Is Acid Wash?

Acid wash is a cleaning method that uses acidic chemicals (such as hydrochloric acid or phosphoric acid) to remove stubborn stains, cement residue, lime deposits, and hard water marks from floors.

It is commonly used on:

• Cement floors

• Ceramic tiles

• Outdoor stone surfaces

However, granite is a natural stone, and acid wash must be handled with extreme caution.

Is Acid Wash Safe for Granite Floors?

❌ Generally, acid wash is NOT recommended for granite floors.

Granite contains natural minerals that react with acids. Using acid can:

• Damage the surface polish

• Cause dull patches or etching

• Weaken the stone over time

• Permanently spoil the shine

• Change the natural colour of granite

Once damaged by acid, granite floors cannot be restored easily without professional re-polishing.

When Is Acid Wash Used on Granite (With Caution)?

In rare cases, very mild and controlled acid treatment may be used only by professionals for:

• Heavy cement stains after construction

• Severe mineral deposits

• Outdoor granite flooring (unpolished only)

⚠️ Even then, it must be:

• Highly diluted

• Tested on a hidden area

• Neutralized immediately after use

• Followed by thorough washing and polishing

DIY acid washing on granite floors is strongly discouraged.

Risks of Acid Wash on Granite Floors

1. Loss of Shine

Acid eats away the polished surface, making granite look dull and lifeless.

2. Surface Etching

Leaves visible marks and uneven patches that cannot be removed easily.

3. Long-Term Damage

Repeated acid use weakens the stone and reduces its lifespan.

4. Safety Hazards

Acids can cause skin burns, breathing issues, and damage nearby fittings.

Better Alternatives to Acid Wash for Granite Floors

1. Neutral pH Granite Cleaners

Specially designed stone cleaners remove dirt without harming granite.

2. Professional Machine Scrubbing

Floor scrubbers remove stains safely using water and mild solutions.

3. Poultice Treatment for Stains

A paste applied to absorb deep stains without damaging the surface.

4. Granite Polishing

Restores shine, smoothness, and original appearance.

5. Steam Cleaning

Removes dirt and bacteria without chemicals.

Best Way to Clean Granite Floors Safely

Daily Cleaning

• Sweep or dust mop

• Use plain water or mild pH-neutral cleaner

Weekly Cleaning

• Damp mop with stone-safe solution

• Dry immediately to prevent water marks

Deep Cleaning

• Avoid acids and harsh chemicals

• Call professional granite floor cleaning services

When Should You Call Professionals?

You should opt for professional granite cleaning when:

• Cement stains won’t go away

• Floor has lost its shine

• Water marks are visible

• Post-construction cleaning is needed

• You want polishing and restoration

Professionals know how to treat granite safely without damaging the stone.

While acid wash may seem like a quick solution, it is risky and usually unsafe for granite floors. Improper acid use can permanently damage the stone, reduce shine, and shorten its lifespan. Instead, always choose granite-safe cleaning methods and professional services for long-lasting results.

A well-maintained granite floor not only looks elegant but also adds value to your home or commercial space.