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Unread 09-23-2020, 08:00 AM   #1
julienaruff
Flooring Professional
 
Join Date: Apr 2005
Location: Rochester,NH
Posts: 21
Have you ever seen this? If so, what is it?

Troubleshooting this for a customer. This was installed about 2 years ago (by someone else) on a concrete slab. Tiles are reportedly 1'' thick marble. This oily, salty feeling substance is working it's way up through the grout in 2 spots. They clean it up and it's back in 10-14 days. I haven't visited the jobsite yet...have you ever seen/diagnosed a problem like this before? Thanks...
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