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Unread 10-17-2020, 09:30 PM   #11
Veteran DIYer- Schluterville Graduate

STAR Senior Contributor

Join Date: Jul 2004
Location: Nashua, NH
Posts: 14,199
I don't know how well RedGard sticks to something like the Kerdiboard used in their niche. Normally, the niche is attached by using their screws and washers, then those are covered with their KerdiBand. Now, KerdiBand would work to seal the niche to the rest of the wall. Custom might give you some idea of how well their Redgard would work over a Kerdi niche...Schluter might, but my guess is that they'd suggest using Kerdi all over.

There are other preformed niches out there. I don't know how well they would work with Redgard sealing the conversion between your wall and them, either.
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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