Preparing Tile
You need to remove grease, soap residue, silicone contamination, floor waxes (e.g. Mop-and-Glow).
clean using a heavy-duty degreaser or TSP substitute - rinse thoroughly - DO NOT ALLOW RINSE WATER TO DRY BACK ON TO THE CONCRETE.
Verify water uniformly wets the surface without excessive beading.
Wipe with acetone-dampened rags.
Keep a cotton rag very wet with acetone and follow with a fresh white microfiber after each pass.
Apply a test area to verify adhesion.