Maurizio Bertoli

Internationally recognized stone expert

When it comes to maintenance, preservation and restoration of natural stone, such as marble, granite, travertine, limestone, onyx, sandstone, etc. nobody beats the vast expertise and in-depth knowledge of our expert, Maurizio Bertoli.

He’s arguably one the foremost stone experts and is recognized at both a national and international level. Within the stone industry he is known for his radical, “out-of-the-box” way of thinking and operating. Many of his accomplishments and suggestions have become widely embraced industry benchmarks.

For example, his simple but effective “lemon juice test” has become the standard around the world to help consumers determine on their own the suitability of certain granites and whether or not they would need to have an impregnator/sealer applied into them

He exposed the widespread fraud represented by the “convenient” generic classification under the label of “granite” of all sorts of stones that were not even remotely related to true geological granite.

And despite owning and operating a successful company that manufactures a complete line of specialty products for maintenance and preservation of natural stone (sealers and cleaners) he will be the first one to state that...

"Not all stones need to be sealed, and that when a stone doesn’t need to be sealed, sealing it anyway is not only a total waste of time and money, but plain WRONG, as well and above all!"

Which speaks volumes about the man’s integrity.

Mr. Bertoli teaches classes on stone restoration and refinishing at the International Training Centers for the Stone Industry (ITCSI) and has been commissioned by the Marble Institute of America to write the book on stone maintenance and restoration, which he is currently working on.

Thanks to his in-depth knowledge of the subject and his almost uncanny ability to diagnose and solve problems, as well as his unorthodox and creative approach (still within strict parameters of sound and proven techniques) to stone refinishing and preservation,  he counts among numerous customers:

  • MARPOL MARBLE, Toronto, ON
  • ASTS FLOORING, Toronto, ON
  • AM-PM BUILDING MAINTENANCE, Seoul, South Korea
  • MILVIN INTERNATIONAL, Calcutta, India
  • WALT DISNEY WORLD, Lake Buena Vista, FL
  • THE BANK OF CHINA, Beijing, China
  • BERMUDATECH, Hamilton, Bermuda
  • THE U.S. SENATE

He also volunteers his expertise to web sites such as

He’s also the Editor in Chief of a “radical” monthly e-newsletter, ROCKING THE BOAT, in which every month he posts a new controversial editorial. His outspoken, sparkling writing style makes him a unique character in the stone industry, with numerous followers.

He is often invited to speak publicly.

  • StoneExpo ’93, Orlando, FL,
  • CHFI-FM Radio interview, Toronto, ON,
  • Home Improvement Show, Washington DC
  • Monmouth and Ocean County (NJ) Chapter of A.I.A.

Technical articles carrying his signature and published by all major industry magazines have grown too numerous to list. In addition he has produced a series of educational literature on the subject of stone specification, installation and maintenance.