Cleaning coping stones around pool

Posted: Mon Mar 4, 2019 9:26am

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Lynne77

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My coping stones surrounding the pool are stained with red rain, I have tried jet washing but it doesn't clean them.

Has any one got any ideas.

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Posted: Mon Mar 4, 2019 12:16pm

jack1959

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Posted: Mon Mar 4, 2019 12:16pm

You need brick cleaner

Not sure,but you should buy in builders merch

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Posted: Mon Mar 4, 2019 12:39pm

Lynne77

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Posted: Mon Mar 4, 2019 12:39pm

Thank you

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Posted: Mon Mar 4, 2019 6:03pm

jimtaylor

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Posted: Mon Mar 4, 2019 6:03pm

What you call red rain is just Sahara sand. It's very fine but cleans off my pool surround with no problem if I use the jetwash nozzle close up.

If it's true staining then I suggest you try a strong bleach solution or the opposite - agua fuerte, but if you use agua fuerte don't delay in rinsing it off.

Posted: Mon Mar 4, 2019 6:32pm

Villas

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Posted: Mon Mar 4, 2019 6:32pm

Good ol; Jim... Agua fuerte works wonders, dilute....then jet wash. (the agua fuerte also helps in the pool.) the Sarharan sand stains everything. A scourer for the indentations.Wear gloves if you are proud of your nails.

Villias.

Posted: Mon Mar 4, 2019 7:06pm

Lynne77

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Posted: Mon Mar 4, 2019 7:06pm

Thank you for your reply

Lynne

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Posted: Tue Mar 5, 2019 6:07pm

NickB

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Posted: Tue Mar 5, 2019 6:07pm

Hi Lynn,

We had some builders lay a new patio and when they'd finished they used an sulphuric acid to clean off all the excess grout, etc. They said you could get it from any Chinese supermarket, but also said there is no way you'd be able to purchase it in the UK as it was so strong. Unfortunately, I'm not sure what it was called, but we use a Google translate app on our phones when we need anything like that out of the ordinary.

Not sure if this helps?

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Posted: Tue Mar 5, 2019 6:33pm

Villas

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Posted: Tue Mar 5, 2019 6:33pm

As above. It's called agua fuerte. V

Posted: Tue Mar 5, 2019 6:41pm

Villas

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Posted: Tue Mar 5, 2019 6:41pm

PS. It's dilute hydrochloric acid. Not sulphuric....... But it's strong. Take care. Descale kettles, anti-calcium, unblock drains....cheap as chips ( but don't confuse eith a good malt vinegar! Villas.