Cleaning & Maintenance Management Online

Wednesday's Ask the Experts: How can we avoid water spots on pre-finished tile?

August 22, 2012

Many cleaning professionals visit the International Custodial Advisers Network (ICAN) Ask the Experts page for insight and, every business day, we deliver advice to better help you perform your job.

Wednesday's Question:

The floor in question is comprised of ceramic tile that came pre-finished, no sealing or top coating necessary due to a special coating applied during production of tiles. The floor is uneven due a combination of a bad foundation and the fact that it was built on swamp land.

We use a ride-on auto-scubber by Tennant, model T-16, every night on it. A 3M chemical solution is used every other day, alternating with just water. The problem is that there are water spots everywhere, despite changing speed, chemicals, drivers, and adjusting the squeegees in various ways, and spot mopping up the bad spots.

Mopping the whole thing is simply not feasible because we only have one person at night cleaning the floors. Trail-mopping is not very feasible either due to the square footage we have to clean. Because the water spots are everywhere, we would be just mopping the entire thing.

Basically, the floor cleaning crew is at its wit’s end trying to do things better so we stop getting complaints about the floors. Is there anything you can suggest to help?

Wednesday's Answer:

Due to a poor tile installation, you have a floor with highs and lows. It is uneven and will not allow the squeegee on the machine to do a complete pickup of solution or water put down by the T-16.

So far, every adjustment to the machine and its speed has failed to provide a full pickup and it appears that you will not see an improvement until the floor miraculously evens itself out.

You don’t say what the sq. ft. area is, but if mopping to pick up what has been missed is not possible, you are left with the procedure of having your floor man cover a selected area with the rider, stop it, and then go over what was scrubbed with a wet vac and floor tool of such a width that it will not   ... — Lynn E. Krafft, ICANATEX editor

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