A window wood sill can become damaged if it has been used over time. However, they can last for a long time if properly kept and maintained. You can protect a window wood sill by coating them with paint.
If you own an old house, then you need to get acquainted with the steps to take in repairing old windows in the event that they get damaged. It is quite cheaper to repair your windows than it is to replace them.
Most house owners think that the restoration of old windows is hard, but that is not the case. With the right tools and knowledge, anybody can get the job done.