Seal basement walls with waterproofing materials.

Even if your home has never actually flooded, water can still seep in - especially if you have an inground basement. In fact, too much interior moisture can be a home's worst enemy and can damage the foundation, drywall, ceilings and floors... among other things. Sealing your basement's walls with a waterproofing compound will help protect your home from expensive water-related repairs. However, if your basement frequently floods, a sump pump is probably in order.

-Kudzu website