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Unread 07-22-2015, 08:06 AM   #2
Veteran DIYer- Schluterville Graduate

STAR Senior Contributor

Join Date: Jul 2004
Location: Nashua, NH
Posts: 14,233
Sanded can be used in joints smaller than1/8", it's just harder to force it in there. Sanded is stronger. You can seal after installing the fixtures.

On a bathroom floor, I think sealing is a good idea on cement based grouts.
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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