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Question DetailsAsked on 9/22/2011

How can I get rid of a white, powdery film on rough cut tiles on a protected outside deck. Scrubbing doesn't seem to helpt.

Tiles were installed about 4 years ago; I don't know kind of stone but they have many natural colors, the surface is uneven which appears to be the result of the tiles being "split" horizontally rather than "sliced". The tiles are 12" x 12'. The white residue does not wash off with scrubbing with a non-phosphate TSP. Hope you can help.

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Do you know if any flower planters were placed on your tiles? I have the same thing in certain places on my covered deck & porch where I've had plants in ceramic pots. They've produced a white chalky residue on the decking and on the pots.Perhaps this is the same problem you've got. We have well water and have had it tested. There is sodium but it's very balanced and our water tastes great, but I've been told that this residue problem is an issue with the salt found in our water. It's also on my fountain and it looks terrible. I have wondered if there's some sort of chemical reaction with the water and certain planters. Perhaps something used in the glazes or in the materials used to make them that's reacting with the minerals in our water. It is curious because not all of my planters have the problem...I too would love to find something to get rid of it !

Answered 6 years ago by Susan*




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