My parents had some heavy rain where they live, and some water leaked through an area of the baseboard in the kitchen (which is next the backyard/kitchen). My dad was able to mop up the leak before any real damage occurred, and has also taken off the baseboards in the leaking area (the baseboards/house are almost 30 years old).

My questions is whether replacing/installing new baseboards is sufficient to prevent new leaks. My thinking is the water should not be coming in contact with the inside of the house, much less the baseboards, and we need to figure out how/why the water is reaching the baseboards in the first place. Otherwise it seems that the same think would happen again even if the baseboards are replaced. Please let me know your thoughts. Thanks.