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Unread 02-12-2016, 12:26 PM   #42
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Join Date: Jun 2011
Location: Indy
Posts: 76
Thanks for the reply..

I will be using kerdi as my waterproofing. At 64", I figured my slope at 1 3/8", give or take a 1/16th. From what I have read it looks like the kerdi-line drains are about 1 inch installed on the subfloor. The rest of the bathroom has a double layer floor (3/4" and 1/2) and will have ditra on top of that. With that being said it looks like I will have to rip my joists down 1" to get my 1/4" per foot slope. And yes I will be putting the subfloor of the shower area (3/4") between the joists.

Does my math seem correct?
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