Which type of wood is it and how thick is the hardwood layer? Some types of wood are much more suited to your situation than others. Also, unfortunately, whereas with a solid wood floor you can sand and refinish repeatedly if necessary, it is not such a great option with engineered wood. Hopefully you can figure out a way to resolve this, but in case you need to replace the flooring you might want to try this site which can help you to identify types of wood flooring that might suit your circumstances via an interactive profile.
http://www.jgpwoodfloors.com/
http://www.jgpwoodfloors.com/