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Friday's Ask the Experts: Grout care

January 28, 2011
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Friday''s Ask the Experts question from a cleaning professional on the International Custodial Advisors Network (ICAN) "Ask the Experts" page: I have about 10,000 square feet of unglazed ceramic tile that is in a busy church. The tile and grout is in poor shape and has never been sealed.
First, I will be cleaning it to get in good shape and then sealing it. How many coats should be used?
What brand name of sealer should be used? How often will this need to be re-sealed?
The answer:
There are two basic types of sealer: A penetrating/impregnator seal that sinks into the surface of the flooring and grout and a topical/sacrificial coating that stays on the surface to protect the floor against wear and moisture/stain penetration.
If you just want protection against staining and moisture, the penetrating seal will do the job. If you want a different surface appearance ... Lynn E. Krafft, ICAN/ATEX editor
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