Cleaning Cement

Old 09-08-23, 01:27 PM
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Cleaning Cement

Hello...looking for a cement expert to make sure I am doing the right thing. I want to clean my foundation (residential) with a mixture of water and bleach to get rid of the moss and stains. Some websites say it is safe others do not. One identifies that the metal rebar will rust if you do this (?)..not sure about that one.

I did a test area on a section of my foundation and with a little brushing it worked great.

I also rinsed it off extensively with water.

Thank you in advance

Old 09-08-23, 03:20 PM
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Not a cement expert but I have been cleaning my sidewalk and exposed foundation for years with a pressure washer.
Old 09-08-23, 10:33 PM
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First thing an expert will tell you is you're cleaning concrete, as cement is an ingredient in concrete, not a finished material. If rebar is rusting, I would be asking why it's exposed enough to do so?
Old 09-09-23, 02:13 AM
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Bleach can cause steel to rust but first it needs to contact the steel and secondly it needs to stay on the steel so as long as it's rinsed there shouldn't be any issue.

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