I intend on putting vinyl flooring over top.Plywood or leveler?
plywood would be best but only if there is absolutely no moisture-ever. If there is apply a water blocking primer and then the sub floor.
Leveler is usually enough, but with vinyl tile it will show any small imperfection or bump. But if you properly apply a leveler and maybe a little thin- set where needed you can make your smooth. You might want to use the mastic type of tiles verses the peel and stick variety, but both types should work just fine.
u don't need any plywood because u can laid the vinyl over concrete leveler is only as the name said ,to level the floor en case of ,of course ,un-level floor good luck my friend
I would not use plywood over concrete, it wil split, crack and warp because of moisture. Use advantek sold at Lowes or lumber yards, it is moisture resistant engineered plywood. The seal the joints, before you put down your tile.
