Thread: Purus drains
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Unread 04-22-2008, 05:04 PM   #2
Veteran DIYer- Schluterville Graduate

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Join Date: Jul 2004
Location: Nashua, NH
Posts: 14,423
Kerdi isn't designed to be crimped between the ring like that, although it might work if you used something like Kerdi-Fix on it prior to clamping. Because of the different height, there'd be a little lip there so that the grid would sit flush with the tile which wouldn't be the greatest (i.e., it would have to be recessed unlike the kerdi drain where things are flush with the tiling surface). It isn't clear to me if that well is also a trap. If it is a trap, it is functioning like a drum trap which I don't think is legal in the US. Putting a second trap in series to get a standard p-trap often causes drainage problems. If that well is something like just a hair trap, and not a gas seal, it might be okay.
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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