Here are some of the most common problems that occur while installing hardwood floors––including cupping, crowning, and squeaky floors––and instructions on how to fix them. How to Fix Cupped Hardwood Floors. Cupping means that the wood that is raised on the edges of each individual floor board. The center of the board dips below the edges. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.