Flooring Tile - Replacing vinyl with tile

I want to replace the vinyl floor in a bathroom with tile. The house is two years old.

Can I just pull the vinyl and put the tile on whatever base is under the vinyl, or do I have to put down wonderboard before the tile?

Thanks much.

Now that all depends. Concrete subfloor, yes tear and scrape it up, unless you want to use it as a crack suppression membrane, which is iffy!

Over a wood subfloor, install a ceramic tile underlayment! But most of all, make sure the joist and subfloor will support the extra weight!

I tore up the vinyl last night and found that there is particle board underneath. I think I have to pull this out also... placing wonderboard over this will raise the tile too high relative to the carpet at the door.

Does this sound like the correct approach?

Originally posted by Carpets Done Wright
Now that all depends. Concrete subfloor, yes tear and scrape it up, unless you want to use it as a crack suppression membrane, which is iffy!

Over a wood subfloor, install a ceramic tile underlayment! But most of all, make sure the joist and subfloor will support the extra weight!