As with any cork of wood floor installation, material has to be acclimated in the room for 72 hours prior to installation. Yes, If your old cork floor was installed prior to 1970, most likely it was coated with wax. The floor can also be stained prior to applying the finish. Your floor will be rejuvenated, completely sealed and easier to maintain. Sometimes it might be difficult to remove the old wax completely, the only solution is to continue using wax.
Some cork has a vinyl wear layer applied at the factory.
These floors have a limited life and cannot be refinished. This is one reason Natural Cork does not offer this type of material. We do not recommend to do so. Any type of residue built up on the surface of the vinyl could interfere with proper bonding of the adhesive, causing it to delaminate over time. Creating a new subfloor is often costly and time consuming.