I agree that it may have been wet when applied. It also may be the sealer was not applied properly. I would try removing it with a honing powder. Test first of course.

On Thu, Sep 1, 2011 at 1:59 PM, Devin Vance <classicmarblemail@gmail.com> wrote:

It may have been sealed when the stone was still wet. Water-based needs to be applied when completely dry. If this is so it must be stripped.

Devin Vance
Classic Marble Restoration, Inc.
954-815-8023; classicmarblemail@gmail.com
www.classicmarblerestoration.com

On Sep 1, 2011 1:58 PM, "Roger Konarski" <qm144@yahoo.com> wrote:
> I was asked to look @ new shower insulation. The issue is some
> of the limestone tile squares are turning whitish. The tiles were sealed with a
> water based sealer. From the best of my knowledge no acidic cleaners were used
> on the floor. Appreciate any thoughts on what is causing the problem. Please attach
> pictures.
>  
> Thanks,
> RK
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