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Unread 02-21-2008, 08:14 PM   #2
Veteran DIYer- Schluterville Graduate

STAR Senior Contributor

Join Date: Jul 2004
Location: Nashua, NH
Posts: 13,667
I'd consider omitting the cbu, and pouring a slightly thicker slc pour. It will be much easier to anchor the cables to the subflooring rather than through the cbu. If you pour it over the cbu, you don't need the lath, but if you do it on the floor, you do. I'd not use the metal lath with the heating wires, I'd use custom's duralath. SLC is not cheap, but it does level better with a deeper pour. Ideally, it is 1/2" over the highest point. Then, you can tile directly on the slc, or use Ditra.

Don't forget the slc is essential to a reliable pour.
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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