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Flooring and Carpeting/Removal of hard water stains on colored concrete


Can you please shed some light on how to remove hard water stains on coloered sealed concrete. The stain is from where the sprinkler system hits the concrete. I have tried CLR, power washing, wire brush , etc. I would like to remove these and re-seal

Hard water spots are basically minerals from hard water. Minerals can be removed with a high concentration acid. Unfortunately this can also damage the concrete finish too. I suggest using a combination of acid and heat and a pressure washer to try and remove the spots.

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Don Moore


Questions regarding the care and maintenance of Marble, Travertine, Limestone and Terazzo. I can also help with Granite.


I am an experienced trainer working with contract cleaners trying to add hard surfaces to their list of offered services. I have a line of stone care products for sale and offer technical support for these products which gives me an edge with regard to working with natural stone.

Palomar College - undergraduate studies ISS IICRC credited training for hard surfaces

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COIT Services Stanley Steemer Hydroforce

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