Recently I ripped up ceramic tile in my foyer approx 4 X 10.
Originally it was tile over 1/4" plywood , then the plywood was
screwed to the oak floors underneath. I'm guessing the plywood was
there to raise the height of the floor to match the kitchen floor. Now
that I gutted my kitchen and took out 2 layers of ceramic tile and a
layer of linoeum, it turns out that if I tile directly on the hardwood
floors in the foyer, it would match the height of the new kitchen
floor( which I will install 1/2" cement board) .
So my question is can I install tile over hardwood? The existing tile
floor was fine for 25+ years but the only difference is I will not be
using a 1/4" plywood.
In a word, no. The problem is that the hardwood floor moves with
seasonal changes in temperature and humidity. The tile would
fracture. The easiest an surest thing to do is to rip out the
hardwood floor and install backer board then tile it. There are anti-
fracture membranes that you could use but they'd raise the finished
height of the tile a bit.
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