From: "Mike Pio" 
Newsgroups: alt.home.repair misc.consumers.house rec.woodworking
Subject: Re: While finishing garage floor (question about the acid for etching)
Date: Fri, 17 Sep 2004 11:35:46 -0700

A little off topic, but kind of similar...

If your garage floor has some old oil stains (from the previous owner's 
car), will this epoxy treatment still work?  I've been wanting to do this as 
well, but I fear the oil will cause a big mess by not allowing the epoxy to 
adhere correctly.


"Bill Lewis"  wrote in 
message news:10km46nnuubkp62@corp.supernews.com...
> Hi all,
>    I am about to do the epoxy finish on my garage floor, and I have a
> question about the acid used during the etching process.  Basically, my
> dilemma is this:  About 15-20 feet from the bottom of my driveway, there 
> is
> a 8-12ft diameter perpetual puddle that is consistenly fed by rain and all
> of my neighbors' sprinkler runoff.  This puddle is used by the local
> wildlife (birds, etc) all the time.  This puddle is also where my runoff
> will go when I rinse the acid from the floor after etching.  Now, I'm not
> interested in killing/harming/whatever all of the animals that use this
> puddle, so my question is this:  is the acid nuetralized or anything after
> the use on the garage floor, or would it still be toxic?  My thought would
> be to use a push broom/squeegee to get this puddle moving and the area
> rinsed after acid exposure if I have to.
>
>
> Any input would be appreciated (particularly if you are a chemist! ;p)
>
> Thanks!
>
> Bill Lewis
>
>