If your floor has developed cupping, it is important to take action right away in order to prevent any further damage. Cupping happens when the boards of your hardwood floor absorb too much moisture and then expand. This can be caused by excessive humidity, leaks, or spills. As the boards expand, they cup upwards at the edges.
The good news is that cupped floors can often be repaired and flattened out again. The first step is to determine the cause of the problem and fix it (for example, repairing any leaks or addressing high humidity levels). Once the source of moisture is fixed, you can begin flattening your floors.
There are a few different ways to flatten cupped floors, but one of the most effective methods is to use a weighted roller. You'll need to place the roller in the center of each affected board and apply pressure until the board lies flat again. It may take a few tries to get each board completely flat, but with patience and perseverance, you should be able to fix your cupped floors!