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Rust stains on granite pavers


Boomtown

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Posted (edited)

Hi guys I’ve been asked to pressure wash some granite paving in front of a restaurant they have metal planters out side the restaurant, and they have left  the pavers badly stained with rust mark rings on them can anyone recommend were I can by the chemicals to remove them.

Edited by Boomtown
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3 hours ago, Boomtown said:

Hi guys I’ve been asked to pressure wash some granite paving in front of a restaurant they have metal planters out side the restaurant, and they have left  the pavers badly stained with rust mark rings on them can anyone recommend were I can by the chemicals to remove them.

I'd personally do a test patch clean using cemitone brick acid / driveway cleaner or diluted SH

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6 hours ago, Pjj said:

Bonnymans , they do a rust stain remover 

Thanks Pjj

 

6 hours ago, Pjj said:

Bonnymans , they do a rust stain remover 

 

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5 hours ago, Apw1210 said:

I'd personally do a test patch clean using cemitone brick acid / driveway cleaner or diluted SH

Cheers Apw1210 I put some diluted SH on it yesterday it never made any difference though I never thought of brick acid. 

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9 hours ago, Boomtown said:

Cheers Apw1210 I put some diluted SH on it yesterday it never made any difference though I never thought of brick acid. 

Sodium hypochlorite won’t remove rust stains  

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On 04/06/2021 at 14:31, Pjj said:

Sodium hypochlorite won’t remove rust stains  

I wouldn't use acid either - get a specialist product designed for use on stone and removing rust. I have got 1 which is pretty good and I'll check it's name later and add it

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Posted (edited)
On 04/06/2021 at 14:31, Pjj said:

Sodium hypochlorite won’t remove rust stains  

If anything it will make them worse as it rusts metal.

Oxalic acid is just the job for that.

Brick acid is strong stuff but oxalic is safer and good for the purpose of removing rust from things including lead stains etc from softwashing.

 

Edited by Dave B
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People are scared of the word acid but oxalic acid is actually present in leafy green veg and legumes and rhubarb etc.

Not the greatest for your body but also not a strong dangerous acid like hydrochloric (brick acid)

 

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