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Gideon
 
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Doug,

Your advise is very sound.

Both citric acid and vinegar are good suggests - slower but safer
than other methods. The fundamental problem is the fact that the
acids which will attack calcium or magnesium deposits will generally
also attack the concrete. I'd follow your advise and use something
mild and accelerate its action with a brush, followed by a good rinse.

Of course, a painted floor with good paint-concrete adhesion will greatly
mitigate the danger of concrete etching. Hopefully the OP has a well
painted floor, in which case he has little concern.

Gideon


Doug Miller wrote in message ...
In article , Matt
wrote:
My water softener has leaked hard water very slowly for some years.

That made the floor damp and caused a buildup of lime on the concrete
floor. The lime is probably not more than quarter millimeter thick but
is unsightly.

My impulse is to use Lime Away, but I expect that that would attack the
cement in the floor.

Is there any good way to get rid of these lime stains?


Try scrubbing with white vinegar first. If that doesn't do the trick, I think
I'd give citric acid a try before moving up to anything stronger.

--
Regards,
Doug Miller (alphageek at milmac dot com)

Nobody ever left footprints in the sands of time by sitting on his butt.
And who wants to leave buttprints in the sands of time?