I want to lay self adhesive vinyl tiles with a beveled edge in my kitchen, laundry room, bathroom and hall. I am laying these tiles over sheet embossed linoleum in the kitchen, old viyl tiles in the bath and laundry (also embossed) and a wood subfloor in the hall (currently covered with rug) . There is a wood subfloor in the kitchen and the rest is on a concrete slab. I'm worried about asbestos and don't want to remove the older stuff. Would I be better off laying 1/4 inch underlayment over it all or using a self leveler? Self leveler seems more my speed. If I do lay plywood over everything, how do I do it? Any help would be appreciated.

I want to install new vinyl flooring over a single layer of old vinyl in the kitchen. The old vinyl is in good condition but has a slight pattern imbossed on it. The large home center where I plan to purchase the product and have it installed wants a large amount of money to spread a substance over the old floor to cover up the embossing. This labor costs more than the new vinyl. Is his something I can do? Or does it require a great deal of experience? Is it as simple as opening a can and spreading out same material on the floor? Thanks for any assistance you can provide.