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Unread 10-24-2020, 03:31 PM   #20
jadnashua
Veteran DIYer- Schluterville Graduate

STAR Senior Contributor

 
Join Date: Jul 2004
Location: Nashua, NH
Posts: 14,211
Plumbing code almost universally everywhere requires the shower waterproofing to be sloped to the drain. That's why they usually require flood testing the LINER, as it is the waterproofing, not anything that is applied on top of it. That also means that care must be taken to PRESERVE that liner when placing the tile, especially over the curb, where way too many people screw on cement board, piercing the liner and nullifying the original flood test that may have passed. Way too many tiled showers fail, giving them a bad name. There are numerous cataloged ways to build a successful shower. It's not rocket science, but it is VERY detail oriented and skipping a detail can make it fail.
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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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