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Unread 05-21-2020, 10:53 AM   #1
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Flooring store question

Hello JB folks,

It has been a while since I was here, but I have a question related new home building we are planning.

I came across this note on a flooring store website our builder is recommending for our floors. I have always assumed "flat" is important, level not as much, and that hollow sounds imply voids. Should we be concerned about having this vendor do our work ?


"No subfloors are perfectly level. So, you may hear hollow sounds where your subfloor’s surface dips and ridges.

Be assured that this does not affect the integrity or installation of the ceramic tile. Hollow sounds are normal and are not considered a product or installation defect."

The store also had this as a disclaimer:

"Also, changes of season can cause surfaces adjoining the tile to expand and contract, causing the grout to crack and separate."

Last edited by CharlieM; 05-21-2020 at 11:03 AM.
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Unread 05-21-2020, 11:32 AM   #2
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I beg to differ. "Hollow" sounds are NOT good. Any gaps should be filled with thinset. He is correct in that "level" is far less important than "flat."

Dips and ridges MUST be addressed before any tiling is done......

"Women and cats will do as they please, and men and dogs should relax and get used to the idea."
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Unread 05-21-2020, 11:53 AM   #3
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I would absolutely avoid that vendor, Charlie.

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Unread 05-21-2020, 12:51 PM   #4
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That was my thinking as well. Just looking for some confirmation.

Thank you.
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Unread 05-21-2020, 01:52 PM   #5
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Please avoid that vendor that doesn’t seem to understand some of the most basic elements to installing a brittle material like tile.
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