Exterior waterproofing methods offer the best defense against water infiltration. Downspouts and gutters collect and divert water away from your home, while a waterproof membrane seals out moisture, protecting the concrete from cracks and leaks. When combined with a French drain system, the exterior waterproofing package ensures a dry basement free of waterproofing issues. Interior waterproofing consists of drains and pipes that redirect water to the sump pump and safely discharge it outside. Waterproof paints and crack sealing products can help eliminate moisture and humidity from your home. While interior waterproofing systems reduce the risk of flooding and cost less than exterior systems, they may eventually deteriorate without an external system in place.