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re: Pressure Wash for Concrete - Pretreatment?
Posted on 5/4/24 at 3:39 pm to Knucklehead
Posted on 5/4/24 at 3:39 pm to Knucklehead
I think that depends on the pressure washer. If you have something with 3,000psi/3gpm or more then I don't think a pretreatment is going to help. If you are using something electric you're probably going to need the extra help to loosen the grime.
1
Posted on 5/4/24 at 3:59 pm to Clames
All the pros pretreat with a bleach water mix.
Anything other than that and you are likely to either end up with lines or needing to do it again before long.
Anything other than that and you are likely to either end up with lines or needing to do it again before long.
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