Stone and Tile PROS | Natural Stone, Tile, Concrete | A service of...
Your Stone and Tile Information & Resource Super Site

Powdery residue on limestone despite many washings

Q. Our installer grinded off the top layer of our limestone floor and since then we have repeated powdery residue on limestone despite numerous washings and sealings/impregnatings. Why is this and can this be fixed as I don’t want to have white powder on my socks every time I walk across it. Thanks!

A. It sounds like you may have what is called efflorescence. This is caused by excessive moisture hich dissolves the salts in the setting bed. Over time it will disappear -- once the installation is completely dry. I would make sure that you don’t have a moisture problem, otherwise it will continue to occur.  I would suggest you limit the amount of water you use for cleaning and to place some fans on the floor to dry it out.

Fred M. Hueston
Chief Technical Director

To find a Certified Stone and Tile PRO Partner in your area, click here. For additional information, read this related article: Why Is My Natural Stone Flaking?

5 (1)
Article Rating (1 Votes)
Rate this article
Attached Files
There are no attachments for this article.
There are no comments for this article. Be the first to post a comment.
Security Code Security Code
Related Articles RSS Feed
Would the steel wool mess up the finish on my chrome fixtures?
Viewed 2843 times since Thu, Mar 1, 2007
How to remove burn mark on marble
Viewed 9374 times since Tue, Dec 23, 2008
What is the best way to remove excess traverfill from tile?
Viewed 3462 times since Tue, Dec 23, 2008
How to remove white spots on marble
Viewed 17156 times since Thu, Apr 23, 2009
How do I treat a metal stain?
Viewed 2659 times since Thu, Mar 1, 2007
How to remove stain from cork backed trivet on marble
Viewed 5319 times since Fri, Aug 13, 2010
How To Remove Polish From Slippery Marble Floor
Viewed 380 times since Tue, Jan 28, 2020
How can I prevent stains from occuring in my stone?
Viewed 2659 times since Thu, Aug 21, 2008
Can you recommend a grinder/polisher that will work and has enough rpms for using MB Stone Care MB-12?
Viewed 3069 times since Thu, Dec 27, 2007
Can I remove etching from my natural stone?
Viewed 5252 times since Sat, Sep 5, 2009