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wrote:
I just finished about 30 sq feet of the bathroom tiles installed
directly over sheet lino. Before I grouted it, I walked over the
tiles and everything seems fine. Then I grouted it with sanded grout
and afterwards I could hear slight noise when I stepped on the tiles.

The noise is like that the tiles are now pushing against the grout,
like the edge of the tiles is rubbing against the grout. If the tiles
won't crack, I could care less about the noise but I don't know for
sure if I want to finish up the other 1/2 of the bathroom anymore.

Not likely that the tiles will crack but the grout will. Why? Because
the tiles are moving? Why? Because the tiles aren't well bedded and
thinset won't stick to the lino/vinyl. You should have bedded them with
mastic instead of thinset. Either that or put down - and mechanically
fastened - cement board on top of the lino/vinyl.

Rip up what you did and do it right.

--
dadiOH
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