Laying tiles on vinyl flooring?

[mythic]

I've been asked to help with laying tiles at a friend's place.
But there is already a vinyl floor there.
It's NOT in a wet room or similar, just in the mudroom.

Can you lay tiles directly on the vinyl? Or do you have to remove the whole thing? I understand that might be best, but is it necessary?

I should add that it's a concrete floor under the vinyl.

 

[mythic]

Har blivit tillfrågat om att hjälpa till med att lägga klinkers hos en bekant.
Men nu är det så att det ligger en plastmatta där sedan innan.
Det är INTE i våtrums eller liknande. bara i grov-entren.

Kan man lägga klinkers på mattan direkt bara? eller måste man ta bort hela skiten. Förstår att det kanske är det bästa? men måste man?

ska tillägga att det är betonggolv under plastmattan.

Måste även tillägga att en tvättmaskin ska stå i ett hörn också.

 

[magnu]

You can do as you like.
I would have ripped out the plastic mat. The problem is that the plastic is a bit soft. Then, theoretically (and perhaps practically), the tiles can come loose, and the grout can crack.
A few years ago, I tore up a tile floor that was set against a chipboard. The chipboard was painted with some shiny black paint meant for tiles. In any case, the tile floor looked completely OK after 30 years.
The only interesting thing was the insufficient adhesion.

A lot is possible, but you compromise your margins and increase the risk of a less successful result that might need to be redone.

 

[Henri]

Must also add that a washing machine should stand in a corner as well.

With a washing machine in the space, I would install a floor drain and provide the floor with a waterproofing membrane. It's not uncommon for washing machines to leak water.