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Tuesday, July 29, 2014

Question

I will be sealing a slate stone tile floor. It is in a natural state right now. It is two years old and needs to be scrubbed before I seal it. After I scrub it, do I have to wait 48 hours for it to dry thoroughly before I seal it? I will be using a water based sealer/finish.


Answer

Forty-Eight hours may be an excessive wait and allow the floor to resoil before you seal it. The slate will dry quickly unless there is high humidity. The grout will hold moisture longer, but the wait need not be more than several hours.
Do your scrubbing and rinsing, use a wet vac for pickup, touch up with a clean mop, and set a fan or two to speed drying. Allow a couple of hours for complete drying. Also important is the curing time allowed for the seal-finish itself before recoating.
Lynn E. Krafft, ICAN/ATEX Associate Editor
lekrafft@juno.com