I suggest testing to learn what the soiling is made of and what the concrete
is exactly. You can often deduce what can and can't be used by this then
narrow down by small test patches.


Eric Hammarberg
Associate Director of Preservation
Associate
LZA Technology
641 Avenue of the Americas
New York, NY 10011-2014
Telephone: 917.661.8176 (Direct)
Mobile: 917.439.3537
Fax: 917.661.8177 (Direct)
email:  [log in to unmask]



-----Original Message-----
From: Mark W. James [mailto:[log in to unmask]]
Sent: Saturday, February 23, 2002 2:23 PM
To: [log in to unmask]
Subject: Re: Cremains mortar additive


Okay guys, I do have a question that needs an answer.

The mausoleum I am working on has an entryway that is white marble slabs
combined with concrete.  The concrete is definitely off color, and contains
evidence of effervescence near the roof.  My understanding is that the
leaching will continue to take place until the leak is repaired.  The
committee wants the concrete cleaned.  My history with products forced me
into creating products as many leave a lot to desire.  The name of the game
is approval from the committee who is trying to preserve under conservation
guidelines.  Makes sense, but little gets done, as they battle amongst
themselves constantly.  Found myself facing all of them with serious
textbook questions, that when answered, I know they went home to research
what I said.

Prosoco informed me of their products which I have not used.  Any ideas on
cleaning concrete in a historical building?

Now my ignorance surely stands out, however I am here to learn, as well as,
contribute.
Mark

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