If the vinyl is stuck to the floor and in good shape, you can lay ceramic directly on top of it. The thin set will set up properly. If any areas, say in the doorway are peeling up....cut them back to an area where they are solidly adhered. That's what I had to do in my bathroom. I had no choice but to lay over the existing vinyl...and everything is perfect.
The trick with vinyl....I know you said linoleum....but sometimes that's a generic term....most times, it's vinyl....the trick with vinyl....if it was installed before 1982, the backing and the adhesive have asbestos in them. Mine was much older than 1982. Yes, you can keep the vinyl VERY wet while scraping it off the floor, to keep the fibers out of the air, but...you usually come out with an uneven surface, but if it's still adhered to the floor...why bother to remove it. If it's older than 1982....removing vinyl is still quite a chore.
To put down an underlayment will only be raising the level of your floor, when that's not called for. When you put down an underlayment and then ceramic...you then have to make sure that the A: dishwasher will still come out from under the countertop if need be. B: The dishwasher will still FIT under the countertop.
When installing over the vinyl, you should have enough adjustment in the legs of the dishwasher, to raise them up and still have room to remove it if necessary.
Flooring manager, retail store - 10 years
· 1 decade ago