Dear Charles:
“
I have been told that this is normal for light granite to darken like this. Is this true?
”
Not all light-colored mercantile granites, but for many it is true. However, it is true only if the stone is unsealed. If it is sealed properly it may still get a little darker when wet (it's referred to as surface wetting) but it should take substantilly less than 30 to 40 minutes to dry! At most it should dry in a matter of a couple of minutes, tops.
So, what happened?...
Quite simply, the product you applied is not appropriate for that particular stone.
Unfortunately, Mother Nature made stones quite different from one another and no human simplistic classification under a generic name like “granite” can change that.
While I'm not critici
Now to the marble question.
MB-13 will not work. Stone is polished mechanically by abrasion and friction, like gemstone, not by applying some polishing agent on it. MB-13 only helps enhancing the original actual polish, not to make it. Now, if you could describe in details (is it uniform, is it streaky?...) the “dullness” you're reporting for me or, better yet, send me a couple of picture, I may be able to help you.
In the meantime,
may I ask you now to please read and e-sign our Statement of Purpose at:
http://www.marblecleaning.org/purpose.htm?
J
Ciao and good luck,
Mauri
Article ID: 488
Created On: Mon, Sep 17, 2007 at 12:19 PM
Last Updated On: Mon, Sep 17, 2007 at 12:00 AM
Authored by: Maurizio Bertoli [mail@mbstone.com]
Online URL: https://marblecleaning.org/knowledgebase/article.php?id=488