Can deterioration of chipboard damaged by steam be arrested?
Once the chipboard has dried out a sealing paint can be used to encapsulate the wood fiber. Once the Melamine starts buckling it is tough to seal unless removed and a new strip installed after sanding filling then sealing.It may be tough to get a close match on the color but this method should provide another 5+ years. You could even use a different color to make a accent strip. standard counter top adhesive contact cement like this will hold the new strip in place if well prepared.