Hydrostatic pressure is caused when water pressure builds up outside a foundation. The weight of the water pushes downward until it finds the path of least resistance, and since a basement is nothing but a hole in the ground it is easy to see why it would come in the small seam at the floor / wall seam. It is usually recommended to discharge the water at least 10 feet or more away from the foundation. We accomplish this by installing an anti-freeze device and a solid pipe out to a yard drain. This pipe is buried underneath the sod and is hardly noticeable.
