<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD><TITLE>Re: [Greenbuilding] Redoing all floors</TITLE>
<META content="text/html; charset=iso-8859-1" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 8.00.6001.19088">
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#defee9>
<DIV><FONT size=2 face=Arial>I have been told water-based stain--which was used
to get the mottled creative pattern that was intended (without white
blooms)--does not sink into the concrete like acid-stain does. Either way, where
the stain and sealer have pulled up, there's plain white. It's chalky. Numerous
concrete contractors had no idea what that was, telling me my contractor must
have done a white layer of stain first, which I knew was not the case. One
finally pointed out it's calcium carbonate that chemically reacted to something
(the diesel/propane fuel? the exterior stain that was used indoors [as I later
found out]?) That makes sense to me as one gets white on the finger when rubbing
those areas. The white areas are all white--the stain has completely lifted up.
So it does not seem to have gone down into the concrete--unless there is more
under the calcium carbonate.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Also I should have mentioned earlier much of the
sealer seems to have disappeared. When put down it was very shiny (as it was
supposed to remain) but now in many areas there appears to be little or no
sealer (this is from work done two months ago), and one contractor commented the
sealer is soft (vs. it supposedly the hardest, most durable there is per my
contractor who clearly misled me in numerous ways).</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Per the sealer tech rep, the sealer does need to be
removed whether I go with concrete again or with tile. He seems to lean towards
grinding to remove it. Is that the same as the shot blast you
mention?</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=andy@safebuildingsolutions.com
href="mailto:andy@safebuildingsolutions.com">Andrew Pace</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=greenbuilding@lists.bioenergylists.org
href="mailto:greenbuilding@lists.bioenergylists.org">Green Building</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, July 27, 2011 2:49
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Greenbuilding] Redoing all
floors</DIV>
<DIV><BR></DIV><FONT face=Arial><SPAN style="FONT-SIZE: 12px">Jason...acid
etching the concrete won’t remove the sealer and paint stripper won’t remove
the stain. Acid etching only works when the acid has “access” to the
free lime in the concrete. The sealer...seals it...so this isn’t an
option. The stain should be in the concrete and not on top of it, so
stripping wont be effective. The only way to remove the sealer and stain
would be to shot blast. <BR><BR>Andrew Pace<BR>Green Design Center®
<BR>Waukesha, WI<BR><BR><BR><BR><BR>On 7/27/11 2:36 PM, "Jason Holstine"
<jason@amicusgreen.com> wrote:<BR><BR></SPAN></FONT>
<BLOCKQUOTE><FONT size=4><FONT face=Calibri><SPAN
style="FONT-SIZE: 14px">Can you etch the concrete to remove the current
sealer, strip the stain with paint stripper, let the concrete properly dry
and cure, then go back and stain and refinish?<BR><BR>Also – any concrete
will naturally have a certain unpredictability in the finish pattern, with
random burnishing and highs and lows of color. So I typically recommend take
advantage of that, fly with it, and stain with a creative, random, very cool
stain pattern. You won’t know what’s mistake/old mess-up and what’s
intentionally part of the pattern.<BR><BR></SPAN></FONT></FONT></BLOCKQUOTE>
<P>
<HR>
<P></P>_______________________________________________<BR>Greenbuilding
mailing list<BR>to Send a Message to the list, use the email
address<BR>Greenbuilding@bioenergylists.org<BR><BR>to UNSUBSCRIBE or Change
your List Settings use the web
page<BR>http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org</BLOCKQUOTE></BODY></HTML>