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

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Question
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

Answer
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.

Flooring and Carpeting

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Don Moore

Expertise

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

Experience

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.

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

Past/Present Clients
COIT Services Stanley Steemer Hydroforce

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