Cleaning concrete

Old 05-30-18, 08:53 PM
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Cleaning concrete

What chemicals work best to remove grafiti off concrete before pressure washing ?
Old 05-30-18, 09:31 PM
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I don't know the brand name of it, but Home Depot has a driveway cleaner that I used in the past along with a wire brush and then the pressure washer. It's in a blue colored bleech style plastic bottle.
Old 05-31-18, 03:36 AM
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The few times I've had to clean up graffiti on concrete I 'painted' the graffiti with paint stripper, let it work and then pressure washed.

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