do you mean ceramic, stone, or porcelain tile ?

if so ...

no you can not lay ceramic directly over vinyl.

you MAY be able to lay a backer membrane (like scluter ditra) over the vinyl IF it is NOT a cushion-backed vinyl and NOT if it is a perimeter bonded vinyl.

if however it is a very firm or commercial vinyl, and it is well adhered, you can install ditra and install tile over that.

barring that the vinyl needs to come out, but if installed before 1979-1980 be very careful and have it checked for asbestos content

here is the information on ditra:

http://flooringworld.org/floorsearch.php?query=schluter+ditra

_____________________________________________

There are two ways to do any job.

The right way and the wrong way.

Do it right everytime.

_____________________________________________

http://flooringworld.org/

_____________________________________________

use regular non-fortified thinset mortar for the ditra and latex/polymer-fortified thiset mortar for the tile.

follow ditra instructions.

_____________________________________________

There are two ways to do any job.

The right way and the wrong way.

Do it right everytime.

_____________________________________________

http://flooringworld.org/

_____________________________________________