Hi Guys. Getting a proposal together to apply a RJSC coating to some Himalayan Sandstone. It has been used in resort apartments and has been sealed with 3 coats of Dry Treat. The floors are not staying clean and all need deep cleaning. I want to make sure I get good adhesion with the RJSC, which is water-based. The cleaning should “take the edge off” of the sealer, but Dry Treat can be pretty tough. Any ideas. Want to stay away from solvents. Might try some abrasives, if so I would probably have to use brushes to follow the floors contour.