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Old 03-03-2014, 11:35 PM   #1
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"My first Floor" Is it right!!


Had to remove tile and a sub-floor of a sub-floor. I didn't go down to the floor joists. I just laid a new sheet of 3/4 plywood over old sub. I'm thinking about laying another 3/4 sheet on top of the new plywood to bring floor back up to the height it was at. When I pulled up the tile and the first layer of plywood I found 3/4 wood strips under it. I remove it the 3/4 wood strip and decide it to just put down the 3/4 plywood over the old sub-floor and another 3/4 lay of plywood to bring the floor back up to the height it was at before. I will be using Ditra as my underlayment on top of the last layer of 3/4 floor. Do you think the way I laid this floor is fine?

Floor Layer
  • old sub-floor
  • 2 layers of 3/4 plywood
  • then Ditra
  • then tile
"My first Floor" Is it right!!-work3.jpg

"My first Floor" Is it right!!-imag0053.jpg

"My first Floor" Is it right!!-imag0054.jpg

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Old 03-04-2014, 02:21 AM   #2
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"My first Floor" Is it right!!


Quote:
Originally Posted by chrisnws View Post
[LIST][*]old sub-floor[*]2 layers of 3/4 plywood[*]then Ditra[*]then tile
I believe You are gonna need some cement board in there to replace 1 layer of 3/4 plywood.

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Old 03-04-2014, 05:23 AM   #3
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"My first Floor" Is it right!!


You messed up the toilet flange area.
That subflooring needed to go under the flange.
I like to cut the drain line off below the floor and slide out the whole flange and tail piece.
Install the subfloor with the hole all ready cut out for the flange using a hole saw or jig saw to make the cut. Doing it that way is the easiest.
The way it is now the flange is just hanging in the air and will crack or the wax ring will leak.
Never should have been a square hole.
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Old 03-04-2014, 06:30 AM   #4
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"My first Floor" Is it right!!


This is what my toilet flange looked like after I was done....

3/4" T&G plywood on top of 2x8 joists (5' span)
1/4" Hardibacker with thinset under it.
then tile....

Flange sits on top of the tile. Toilet sits nice and flat.

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Old 03-04-2014, 09:55 AM   #5
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"My first Floor" Is it right!!


Quote:
Originally Posted by hammerlane
I believe You are gonna need some cement board in there to replace 1 layer of 3/4 plywood.
No. Chris is using Ditra.

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Old 03-04-2014, 10:37 PM   #6
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"My first Floor" Is it right!!


thank you guys I will fix the plywood around the toilet flange area. But remember I still got one more sheet of 3/4 plywood to add, so the floor will be back to the original height of the old floor height of 1 1/2. After I add the last sheet of plywood then I'll add the Ditra on top then lay my tile.
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Old 03-05-2014, 06:13 AM   #7
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"My first Floor" Is it right!!


Does not matter, still need the support under the flange, not around it.
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Old 03-05-2014, 09:25 AM   #8
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"My first Floor" Is it right!!


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No. Chris is using Ditra.
Ok....wasnt sure about the Ditra install and what type of base it recommends.
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Old 03-05-2014, 11:00 AM   #9
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"My first Floor" Is it right!!


Quote:
Originally Posted by Joe
Does not matter, still need the support under the flange
The flange can be supported by installing 3 small blocks under the flange & screwing to the subfloor. There's really no need to have ply completely under the flange, but the ply should have round corners.

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Old 03-05-2014, 11:18 PM   #10
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"My first Floor" Is it right!!


There is also waxless toilet seals that you can buy that allow 3/4" of flange to floor play. I used one upstairs as the flange was slightly lower then the tile after ditra, thinset and tile. Works perfect!

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