Any flex at all will make tile crack. It cannot be laid over vinyl,
unless you were to put some very seriously fastened concrete backer
board or something similar down. Sorry, the vinyl has to come up.

shel wrote:
Question - can anyone help?
I am putting down a ceramic tile floor in the basement that has two layers
of glued down vinyl tiles over the concrete. Since they existing flooring
is tightly glued and undamaged, can I put the ceramic tile over them or do I
have to scrape the vinyl and glue off first?
Thanks for any help you can give - Shel
shelperkins (at) cox.net