I have a kitchen floor that is on a concrete slab. Above the slab is old asbestos tile, and above that is a vinyl sheet floor. Now that hardwood has been installed around the kitchen, I want to bring up the level of the kitchen floor to at/near the hardwood (about 1/2" higher), and put down new vinyl too. I plan on putting down 3/8" underlay- ment, then vinyl, then some threshold molding to join it with the hardwood.
Questions:
- What type of material should I use for the underlayment?
- What fasteners should I use to anchor it through the vinyl, asbestos, and into the concrete?
- How much space should I leave at the seams between sheets?
- How much space should I leave at the wall edges?
Thanks, Joe