Concrete cleaning mix ?

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Old 03-12-17, 01:09 PM
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Concrete cleaning mix ?

I was told once to use 3to1 3 water 1 gallon of bleach.
How about putting Sodium Hydrocloric in there??

Put that on let set 15min and then Pressure wash it??
 
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Old 03-12-17, 02:19 PM
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Save the chemicals and just pressure wash!
 
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Old 03-12-17, 02:32 PM
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Are you trying to remove something from the concrete other than dirt ?
 
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Old 03-12-17, 07:13 PM
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I did pressure wash it but looked at it a month later and I see a black line from where my 25" surface cleaner went back and forth. it was driving into the drive way and you see it. I don't like it and will now go sideways but will put down some water/bleach as well.. it was my last job went looked at other jobs did not notice it as bad. I will also clean out my tips..
 
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Old 03-12-17, 08:44 PM
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Does that surface cleaner use spinning 0 nozzles ?

The overlap point can sometimes be seen depending on the hardness of the concrete.
I use a handheld wand with the spinning nozzle to remove visible lines like that.

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Old 03-13-17, 03:39 AM
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What chemicals to use depends mostly on what needs to be cleaned off. Bleach is good for mold/mildew, detergents like TSP are good for other types of grime. Sometimes scrubbing it in with an old broom is beneficial.

In your case it really sounds like an uneven cleaning job.
 
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