I am removing a laminate tile floor. There looks to be 2 layers of 3/4" Plywood as the sub-floor. Do I remove 1 layer of Plywood and install 1/2" concrete board or leave the plywood and install 1/4" concrete board on top of the plywood before installing the porcelain tile floor? My concern is that if I leave the existing sub-floor material I am going to have a ½” rise in the floor from one room to another.
Flooring – How should I prepare a sub-floor for porcelain tile
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Best Answer
wirelath nailed over the plywood(overlapping the lath 2",use paper backed lath to avoid moisture of setting/grout materials)nail or staple(pneumatic,not a hand staple)in a 8"x8" grid.wire acts as a trampoline,the thinset gets into the mesh but won't twist when the plywood deflects.normal thin-set is fine in the application(unless a modified is needed for the tile).