How do I get urethane grout off tile?
by
Wendy
Matte Porcelain tile shows patches of shiny residue
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mineral spirits
Citristrip (not so caustic) or Masco paint stripper (very smelly and caustic). Need a lot of ventilation and do just a few squares at a time to keep from breathing in much of the nasty fumes!
Visit your TILE STORE, THEY USUALLY sell products to clean all types of stone products.