Here's a customer that with heavy rains his exising drain wasn't enough to stop water from coming in under his walkout basement door. This issue would cause his basement to flood to his old sump pump was. We installed a TrenchDrain outside the door with some WaterGuard XL as well as our Z Triplesafe 3. He so satisfied with our system, he decided to replace the existing flooring with our Elite Plank- Walnut flooring.