My wife and I moved into a newly constructed home in an older development. On the west side of our property runs a small stream (about 50 feet from our house). The house is in an area that is known for having a high water table. We have a poured concrete basement and a sump pump. We think we have a french drain on the outside perimeter of the house, but are not 100% sure. I believe that the outlet for the outside french drain leads into the sump pump (inside the basement). In the center of our basement, near the load-bearing beams, there is quite a bit of dampness.
We have had a couple of waterproofers come in to give an estimate and they've both suggested installing an internal french drain and have quoted about $7500. I don't see how that is going to alleviate our problem considering we already have an external french drain. Am I right in that assumption?
Does anybody have any ideas or suggestions? Thanks in advance! Kartik