If you have any kind of natural stone or concrete area - inside or outside - that you'd like to have professionally cleaned, resurfaced, polished, and/or sealed, I highly recommend Stone Improvement. The owner, John Garfield, and his associate arrived a bit late, but called me to let me know they were in traffic, and then they worked hard all day. They know stones and how much pressure and what kinds of products and tools they can use on all stones to clean them without harming them. I'm very glad to have found them!

Here's their contact info:

John Garfield 
Stone Improvement 
Mobile: (415) 305-1369 
Office: (415) 234-6903

cjasper - 12/3/12