This discussion, "Mark's continuing bath remodel saga.", in Ceramic and Stone Q&A (part of the category Do-It-Yourself & Consumer Support), begins, "Ok well I got my 2nd layer of plywood (3/8 BC), down. Was able to set the vanity and get ..."
Ok well I got my 2nd layer of plywood (3/8 BC), down. Was able to set the vanity and get the knee wall bult on one side and framed a wall on the otherside of the vanity were there will be a closet.
One question I have is does the tolit flange sit on the plywood or do you normally tile under it???
If you are using Ditra sitting on top of the plywood would work. If using a backer board , then it should sit on top of that and then tile around it.... as long as the tile comes out flush with the toilet flange you would be OK.
It can even be sitting on top of the tile with most toilets but then you are having to drill thru tile to secure it.
You do have the right thinset for underneath the Ditra, can't use it for setting the tile though, that should be a good grade of regular dry-set (unmodified) thinset like Masterblend. No modified types over Ditra unless you can wait several days to grout.
Go by the grout color when choosing the thinset... a very light to medium light color grout use white thinset and gray thinset under the darker shaded grouts.
The modified thinsets Custom labels them as Fortified (Versabond is one), that would go underneath the Ditra.
On the tub question... are you speaking of a deck mounted soaking tub with no shower head? If so you do not need backerboard to install a few rows of tile along the wall around it. It would not hurt to use a cement board but if you already have drywall or plaster there, and it won't get wet, it should be OK. I would recommend using Redguard or laticrete 9235 there before tiling.
The modified thinsets Custom labels them as Fortified (Versabond is one), that would go underneath the Ditra.
On the tub question... are you speaking of a deck mounted soaking tub with no shower head? If so you do not need backerboard to install a few rows of tile along the wall around it. It would not hurt to use a cement board but if you already have drywall or plaster there, and it won't get wet, it should be OK. I would recommend using Redguard or laticrete 9235 there before tiling.
Correct I am speaking of a deck mounted soaking tub. I was thinking redguard or something on those line but just wanted to make sure.
Would I use the same (Masterblend, PremiumPlus) to install the tile to the drywall or hardiboard around the tub??
I would recommend the Versabond (modified, fortified) on the tub deck "if" you are using a cement backer board there or over the plastered wall section. Use a standard dry-set mortar over top any areas you install the Ditra. If the tub deck is Kerdi, I have no experience with that product yet.
. 
Linear Mode
