When I clean concrete with detergent or pressure washer, it turns dark and stays dark, even when dry.
What can I do to make it turn white, without waiting a year?
TIA Clark
- posted
17 years ago
OT; Why does concrete turn white?
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- posted
17 years ago
If you want white concrete it is advisable to use white cement in the mix.
If you want to change the color of the concrete you have now, paint it.
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- posted
17 years ago
Clark Magnuson wrote in news:26GdnV4-es- kgg3YnZ2dnUVZ snipped-for-privacy@comcast.com:
That's strange - when my pale-grey sidewalk gets dark I know that it's time to wash IT!
Are you sure that the concrete wasn't colored dark when it was poured? [My front "porch" was dyed dark red when IT was poured. ]
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- posted
17 years ago
Try some bleach....
Clark Magnus> When I clean concrete with detergent or pressure washer, it turns dark
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- posted
17 years ago
Damp beach sand is darker than the same beach sand when dry. I suspect the darkening is due to moisture below the surface; can you try holding a wet/dry vacuum over a spot for a minute, to see if it gets dryer (and lighter)?
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- posted
17 years ago
Bleach it! That's right goo old laundry bleach.