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Unread 08-28-2018, 09:34 PM   #6
Registered User
Join Date: Aug 2018
Location: Chicago Area
Posts: 19
So I got the Ditra XL, and actually just installed it - but of course I made what I hope doesn't turn out to be a rookie mistake. I read the installation instructions and saw 1/4 x 3/16 V-notch trowel and used that to install the Ditra XL... had I read a little further I would have seen that a 1/4 x 1/4 square notch might be better.

It looked like there was decent coverage on the back of the corner I pulled up and the thinset (Mapei Ultraflex) was just barely falling off the trowel.

Should I be concerned that I'm not going to get decent adhesion? Obviously not much I can do at this point I realize but a tad worried. Anyone out there have success installing XL with the 1/4 x 3/16 V-notch?
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