Carmen's One adhesive is the only adhesive you will need
If you are a contractor and have a project in a high rise building, then this underlayment will deliver the results you want and then is the drastic sound reduction in your client’s apartment. This product is proudly made in the USA from recycled rubber underlayment. It has LEED points.
How much glue you will need for hardwood floors will depend on one main factor, and this is how well the individual pieces of flooring fit together. In other words, it has to do with how thick the glue line needs to be.
If your sub-floor is very straight and level, and all of the wooden boards are cut to size well, the glue line may be as thin as 1/64th of an inch, or in other words, everything fits together well. If this is the case, a single gallon of wood glue may be enough to cover up to 100 square feet of surface area.