Attaching ply to concrete floor for rubber tiles

[bitstreams]

I have a small utility room and plan to tile with rubber floor tiles (the knobbly ones).

The floor is concrete but is not beautifully smooth, as has had 1960s lino tiles stuck to it. Was thinking of using 6mm marine ply to level it and then the rubber tiles glued to that.

If that's a sensible route, how do I attach the ply to the concrete floor? and should I cover the whole floor and put the appliances on top (washer and dryer)?

Simon

 

[Tigercubrider]

Wouldn’t self leveler be better?

 

[bitstreams]

I was wondering that too. Would I need to get the old vinyl up first (They're very fixed).