On 9/25/2013 9:01 PM, nestork wrote:
Jan:

For some reason, this computer won't let me enter a post that's any
longer than a few dozen lines, so I may have to submit several posts to
answer each of your questoins.

1. It's always a bad idea to install ceramic tile directly over wood of
any kind, including plywood. The reason is that wood is a natural
material and swells and shrinks with changes in it's moisture content
caused by changes in temperature and humidity. Ceramic tile simply
doesn't have the elasticity to accomodate such dimensional changes in
the wood substrate, and so ceramic tile set directly on wood will often
have cracked grout lines and tiles popping loose.

Lemme address some other points in the next post.





it will last if you use mastic rather than thinset.