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Posted by on April 15, 2007, 3:20 pm
My test tile was a 12" x 12" 3/8" thick tile, so pretty decent length
I guess from side to side, which made the rocking more noticeable I
suppose. If it were a 3" x 3" tile, then I guess that would be quite
the hump. From what you describe though, I should be good to go.
wrote:
> On 15 Apr 2007 11:44:30 -0700, unc27...@yahoo.com wrote:
>
> >Bathroom redo, with ceramic tile.....
>
> >Following all the DIY sites & friends' advice, I put down thinset on
> >my bathroom subfloor, then my backerboard, then I put thinset in the
> >seams of the backerboard, pressed fiberglass tape down in the seam/
> >thinset, then put some more thinset over the tape. I thought while
> >doing it it was pretty level. But now that everything's in place, I
> >put a test tile down on the seam & it rocks back & forth a bit.
>
> >Should I go to the trouble of grinding down the seams to get the seam
> >perfectly flat? Or will the thinset that goes under the tile handle
> >this minor hump?
>
> You did it right. The thinset will handle the bump unless it is
> really bad. How bad is really bad? Depends on the tile size and
> thickness, (and hence, on the trowel notch size and thickness of
> thinset). If you're really worried about, lay a couple of test tiles
> using the proper notched trowel. You can always pick them up and
> scrape off the thinset if you don't like what you see. If it's a
> problem, just skim coat all the backerboard with thinset rather than
> trying to grind down the seams.
>
> HTH,
>
> Paul
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