Does hardwood flooring need to be glued down or just nailed?

It depend on the wood. Engineered hardwoods are stronger, and are generally glued, though the trend now is to use floating floors, which are neither glued or nailed. If you are installing on concrete, a floating floor or glued floor works best, as you elimante the need for a subfloor. The key is, you have to follow the manufacturer's reccomendations, as this is required for any kind of a warranty. If you are installing on a wood subfloor, and nailing is an option, nailing is preferred, as you save the cost of the glue, which averages around $1 a square foot.Does hardwood flooring need to be glued down or just nailed?
There is not enough information to give a good answer. I will give you some ways to figure it out. If the hardwood floor is 3/4'; thick you usually nail it down when on plywood, and if on oriental strand board (OSB) you usally use staples. You should always use a vapor barrier under hardwood floor. Rosin paper, or felt paper. If the flooring is 3/8'; you usally glue down and use a brad nailer no vapor barrier.Does hardwood flooring need to be glued down or just nailed?
it depends on the wood...if u were a hardwood floor, i'd nail you.