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Posted by frank megaweege on August 20, 2007, 2:14 pm
>
> > I stained my fence a while ago and dripped stain on my concrete
> > patio.I have tried pressure washing and tried scrubbing with various
> > detergents and cleaning agents and nothing has made any
> > differance.Anyone have any ideas on removing wood stain from concrete.
> > Thanks
>
> Stain penetrates so it cant be removed from concrete like paint with a
> blowtorch and wire brush. Applying other clear petroleum distillates
> like laquer thinner or mineral spirits will only cause discoloration
> of a different kind, as that penetrates too making more problems.
I had a similar problem although it was flagstone, not concrete. I
tried a poultice of talcum and acetone, as recommended for oil stains
on stone countertops and such. After two or three applications some
of the stains were significantly lighter but overall results were
disappointing. I also tried a thick, gel-like paint stripper,
allowing it to sit for 20 or 30 minutes and then powerwashing. Again,
some of the stains were lighter but total results were negligible.
The application of the poultice and the paint stripper did cause
temporary discoloration. There were no signs of them a few days after
power washing.
A couple of months later they appear to be fading on their own enough
that I'm not worried about it anymore. It seems nature doesn't like
the stain and will take it's course.
The lesson I've learned from the whole episode is to use thick plastic
and not old bedsheets for drop cloths.
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