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Unread 10-26-2020, 12:19 PM   #3
Veteran DIYer- Schluterville Graduate

STAR Senior Contributor

Join Date: Jul 2004
Location: Nashua, NH
Posts: 14,210
When you add the cost of the Hardieboard, screws, tape and Redgard, to me, it makes more sense to just get some Kerdiboard panels. You do need to band the screw penetrations and seams, but you eliminate the hassle of getting two good coats (well, three, since you need to prime Hardie with a diluted coat first) without runs or pinholes all between the min/max thickness. While their foam pan works just fine if your floor is flat and level, and the drain is exactly where the tray wants it, it isn't all that hard to pack (not pour, the stuff is like wet beach sand) a pan, then cover it with Kerdi sheet membrane. and materials cost will be about 1/3'rd or so, if not less.
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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