It is rusted through?
If not then you can get a rust converter that takes a rusted area and basically coverts it into a sealed protective coating. You can find at auto parts stores. It will protect the area stop the rust and even be painted over.
If not then you can get a rust converter that takes a rusted area and basically coverts it into a sealed protective coating. You can find at auto parts stores. It will protect the area stop the rust and even be painted over.