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Old 10-13-2011, 12:31 AM   #1
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How forgiving is Ditra?


I'm going to re-tile almost 800 square feet. I just pulled up all of the old tile that was adhered directly to the subfloor (no backerboard, no Ditra). Most of the tiles popped up with a floor scraper very easily but there was a little bit of thinset left on the plywood.

For the last two weeks, we have been using a floor scraper and a 3x21 (small I know) belt sander to try to get the floor as smooth and flat as possible. It looks MUCH better now but there are still some areas where this is a LITTLE bit of thinset. There are also a few screw heads that are barely sticking up above the plywood. I hit them when I use the floor scraper.

If I use Ditra, do I need to even worry about making the subfloor as smooth as possible, or will the modified thinset and Ditra work ok with a not-so smooth/flat surface. I feel like I could scrape and sand for two more weeks and still not get it down to bare plywood.

Any suggestions would be appreciated! Thanks!

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ditra , subfloor , tile adhesives


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