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Unread 04-15-2021, 09:11 PM   #4
jadnashua
Veteran DIYer- Schluterville Graduate

STAR Senior Contributor

 
Join Date: Jul 2004
Location: Nashua, NH
Posts: 14,484
You appear to have enough depth to not use a curb in the conventional sense at all with a step down rather than a surface curb rising from the main floor, or a very short one. As CX said, though, the easier way to waterproof this all would be to use a surface bonded membrane like Kerdi, and not us a conventional clamping drain at all.

Check out www.schlututer.com for some videos on that brand's components and materials. There are other ways to approach this, but I think a surface applied membrane is going to be your easiest, cleanest approach.
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Jim DeBruycker
Not a pro, multiple Schluter Workshops (Schluterville and 2013 and 2014 at Schluter Headquarters), Mapei Training 2014, Laticrete Workshop 2014, Custom Building Products Workshop 2015, and Longtime Forum Participant.
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