Wednesday''s Ask the Experts question from a cleaning professional on the International Custodial Advisors Network (ICAN) "Ask the Experts" page: I am having an issue with a ceramic tile floor. It has many years’ build-up of a residue that I believe is graphite. I have tried to strip the floor without any luck. I have even tried tile and grout cleaner. Any suggestions?
Graphite is a greasy form of carbon. It would seem that a degreaser with adequate dwell time would loosen it, so it can then be removed with wet vacuum. Have you tried steam, or a hot water pressure wash tool on a truckmount?
Before you do anything, test the above process ... Lynn E. Krafft, ICAN/ATEX associate editor, email@example.com