If the old hardwood is smooth and sound no need to increase expense or work for underlayment you have the best you could hope for paper between and lay her down.
Laying hardwood floor over existing hardwood.
When installing new wood flooring parallel to an existing solid nail down floor add a minimum of 3 8 plywood underlayment over the existing floor to increase stability.
Or if the thickness of the floor will allow it staple to the existing floor.
My preferred contractor says that he would recommend installing over the linoleum that it will result in a better floor less squeaks and will.
Additionally laminate flooring can mimic the look and style of the original flooring without all the work of.
Installing new hardwood over old hardwood floors.
For instance i will look at much older floors that were nailed into floor joists before the widespread use of subfloors.
Installing a laminate floor over hardwood is a great option in many cases.
If your subfloor is already hardwood but you want to improve the look of your home with new material it is possible to lay engineered hardwood over the existing floor with proper preparation and traditional installation techniques.
I am having hardwood floors installed in my living room front entry way and dining room.
Tips on connecting an existing hardwood floor with a new hardwood floor.
If the existing floor is indeed past refinishing i would second the vote for click floating floor they are so thin you dont need to rip up old flooring.
Installing new hardwood over older wood floors can be extremely time saving in lieu of removal that can become expensive dirty and even dangerous depending on how the original floor was installed.
The entire area is currently covered with a single layer of well installed linoleum.