We installed our patented WaterGuard french drain in the Wesley United Methodist Church in Kingwood WV against the foundation. WaterGuard is a sub-floor drain that is installed with minimal invasion to the floor; it is designed with a wall flange that is 3/8 of an inch which catches water running down the foundation wall, as well as water coming through the floor. Once concrete has cured the floor is restored and the drain is hardly noticeable. WaterGuard comes with a Lifetime Transferable Waaranty.