Hi Luis: The flooring of which you speak is most likely "Pergo" or high-pressure laminate flooring that 'floats' on a foam backing (that is, it is not nailed or screwed down). The flooring material is much like the laminate used on kitchen counters, except that it has a thin wood backing. This may be a good choice for a dance floor surface, as it will not splinter, expand/contract with weather changes (thus have open joints) or require finishing. However, it will not hold up well to hard heels, taps or other sharp 'hits' that real hardwood would tend to absorb. However, because it is not nailed down, this kind of floor is easy to replace in the future, if need be.