Tuesday''s Ask the Experts question from a cleaning professional on the International Custodial Advisors Network (ICAN) "Ask the Experts" page: My question is, why do I see a slightly gray foggy look in the floor finish now? Did I leave the burnisher on the floor too long? Not long enough? Did I not clean it properly before I started? It is about 4,000 square feet. What would I charge to maintain the floors every other week?
A burnisher remaining too long on one spot will burn (overheat) the finish and leave a dark brown burn mark, not a gray foggy look. I suspect you are seeing a dirty floor through a clear finish coat, the restorer.
Basic rule of thumb. Never put any coating onto an unscrubbed floor. Mopping usually will not loosen and remove all the ground-in particles in the finish and you will seal them in with a coating, whether it is regular finish or a restorer, which is a buffable finish coat.
The floor finish will no longer look ...
— Lynn E. Krafft, ICAN/ATEX associate editor, firstname.lastname@example.org