Flooring Tile - subfloor

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skinut2234
03-12-09, 05:22 PM
Take a look at this picture of my bathroom. We had to replace one really piece of plywood in the subfloor- Where the 3 pieces meet there is a little gap. Should I put another layer of 3/8 plywood and then the cement backer board? (I'm putting ceramic tile in)... Right now- the current subfloor is about 1.5" below top of toilet flange. Will I be able to level off any low spots that way?
https://publish.comcast.net/photos/index/

HotinOKC
03-12-09, 06:17 PM
Your picture is not loading? Upload it to a sharing site, like photobucket.com then paste IMG url back here.

How thick is the current subfloor?

You are going to be following the directions of the cement board, correct?

You will want the toilet flange to be sitting on the finished floor height.
skinut2234
03-13-09, 07:11 AM
subfloor picture by skinut2234 - Photobucket (http://s686.photobucket.com/albums/vv222/skinut2234/?action=view&current=Picture156.jpg)

HeresJohnny
03-13-09, 08:46 AM
How thick is that plywood? Did you install blocking between the joists to support the edges of the plywood cutout?

Adding additional plywood is always a good idea.:)

Right now- the current subfloor is about 1.5" below top of toilet flange.

Sounds like you need to do a lot more than add 3/8" of plywood. What was there before, a mud bed?